Total Complexity | 90 |
Total Lines | 729 |
Duplicated Lines | 0 % |
Changes | 36 | ||
Bugs | 3 | Features | 32 |
Complex classes like Strings often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Strings, and based on these observations, apply Extract Interface, too.
1 | <?php |
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53 | class Strings |
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54 | { |
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55 | /** |
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56 | * The cache for words. |
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57 | * |
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58 | * @var array |
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59 | */ |
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60 | protected static $cache = []; |
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61 | |||
62 | /** |
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63 | * Removes any leading and traling slashes from a string. |
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64 | * |
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65 | * @param string $string String with slashes |
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66 | */ |
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67 | public static function trimSlashes(string $string): string |
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68 | { |
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69 | return static::trim($string, '/'); |
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70 | } |
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71 | |||
72 | /** |
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73 | * Reduces multiple slashes in a string to single slashes. |
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74 | * |
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75 | * @param string $string String or array of strings with slashes |
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76 | */ |
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77 | public static function reduceSlashes(string $string): string |
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78 | { |
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79 | return preg_replace('#(?<!:)//+#', '/', $string); |
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80 | } |
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81 | |||
82 | /** |
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83 | * Removes single and double quotes from a string. |
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84 | * |
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85 | * @param string $str String with single and double quotes |
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86 | */ |
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87 | public static function stripQuotes(string $string): string |
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88 | { |
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89 | return str_replace(['"', "'"], '', $string); |
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90 | } |
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91 | |||
92 | /** |
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93 | * Convert single and double quotes to entities. |
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94 | * |
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95 | * @param string $string String with single and double quotes |
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96 | */ |
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97 | public static function quotesToEntities(string $string): string |
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98 | { |
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99 | return str_replace(["\'", '"', "'", '"'], [''', '"', ''', '"'], $string); |
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100 | } |
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101 | |||
102 | /** |
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103 | * Checks if the string is valid in UTF-8 encoding. |
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104 | * |
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105 | * @param string $string String |
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106 | */ |
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107 | public static function validEncoding(string $string): bool |
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108 | { |
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109 | return $string === static::fixEncoding($string); |
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110 | } |
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111 | |||
112 | /** |
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113 | * Removes all invalid UTF-8 characters from a string. |
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114 | * |
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115 | * @param string $string String |
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116 | */ |
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117 | public static function fixEncoding(string $string): string |
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118 | { |
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119 | return htmlspecialchars_decode(htmlspecialchars($string, ENT_NOQUOTES | ENT_IGNORE, 'UTF-8'), ENT_NOQUOTES); |
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120 | } |
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121 | |||
122 | /** |
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123 | * Standardize line endings to unix-like. |
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124 | * |
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125 | * @param string $string String |
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126 | */ |
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127 | public static function normalizeNewLines(string $string): string |
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128 | { |
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129 | return str_replace(["\r\n", "\r"], "\n", $string); |
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130 | } |
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131 | |||
132 | /** |
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133 | * Normalize white-spaces to a single space. |
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134 | * |
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135 | * @param string $string String |
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136 | */ |
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137 | public static function normalizeSpaces(string $string): string |
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138 | { |
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139 | return preg_replace('/\s+/', ' ', $string); |
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140 | } |
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141 | |||
142 | /** |
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143 | * Creates a random string of characters. |
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144 | * |
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145 | * @param int $length The number of characters. Default is 16 |
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146 | * @param string $keyspace The keyspace |
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147 | */ |
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148 | public static function random(int $length = 64, string $keyspace = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'): string |
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149 | { |
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150 | if ($length <= 0) { |
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151 | $length = 1; |
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152 | } |
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153 | |||
154 | $pieces = []; |
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155 | $max = static::length($keyspace, '8bit') - 1; |
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156 | |||
157 | for ($i = 0; $i < $length; ++$i) { |
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158 | $pieces[] = $keyspace[random_int(0, $max)]; |
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159 | } |
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160 | |||
161 | return implode('', $pieces); |
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162 | } |
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163 | |||
164 | /** |
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165 | * Add's _1 to a string or increment the ending number to allow _2, _3, etc. |
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166 | * |
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167 | * @param string $string String to increment |
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168 | * @param int $first Start with |
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169 | * @param string $separator Separator |
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170 | */ |
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171 | public static function increment(string $string, int $first = 1, string $separator = '_'): string |
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172 | { |
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173 | preg_match('/(.+)' . $separator . '([0-9]+)$/', $string, $match); |
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174 | |||
175 | return isset($match[2]) ? $match[1] . $separator . ($match[2] + 1) : $string . $separator . $first; |
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176 | } |
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177 | |||
178 | /** |
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179 | * Return the length of the given string. |
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180 | * |
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181 | * @param string $string String to check |
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182 | * @param string|null $encoding String encoding |
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183 | */ |
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184 | public static function length(string $string, ?string $encoding = null): int |
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185 | { |
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186 | if ($encoding) { |
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187 | return mb_strlen($string, $encoding); |
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188 | } |
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189 | |||
190 | return mb_strlen($string); |
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191 | } |
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192 | |||
193 | /** |
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194 | * Limit the number of characters in a string. |
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195 | * |
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196 | * @param string $string String |
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197 | * @param int $limit Limit of characters |
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198 | * @param string $append Text to append to the string IF it gets truncated |
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199 | */ |
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200 | public static function limit(string $string, int $limit = 100, string $append = '...'): string |
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201 | { |
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202 | if (mb_strwidth($string, 'UTF-8') <= $limit) { |
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203 | return $string; |
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204 | } |
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205 | |||
206 | return rtrim(mb_strimwidth($string, 0, $limit, '', 'UTF-8')) . $append; |
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207 | } |
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208 | |||
209 | /** |
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210 | * Convert the given string to lower-case. |
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211 | * |
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212 | * @param string $string String |
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213 | */ |
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214 | public static function lower(string $string): string |
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215 | { |
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216 | return mb_strtolower($string, 'UTF-8'); |
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217 | } |
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218 | |||
219 | /** |
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220 | * Convert the given string to upper-case. |
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221 | * |
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222 | * @param string $value |
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223 | */ |
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224 | public static function upper(string $string): string |
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225 | { |
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226 | return mb_strtoupper($string, 'UTF-8'); |
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227 | } |
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228 | |||
229 | /** |
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230 | * Returns the portion of string specified by the start and length parameters. |
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231 | * |
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232 | * @param string $string The string to extract the substring from. |
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233 | * @param int $start If start is non-negative, the returned string will |
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234 | * start at the start'th position in $string, counting from zero. |
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235 | * For instance, in the string 'abcdef', the character at position |
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236 | * 0 is 'a', the character at position 2 is 'c', and so forth. |
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237 | * @param int|null $length Maximum number of characters to use from string. |
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238 | * If omitted or NULL is passed, extract all characters to the end of the string. |
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239 | */ |
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240 | public static function substr(string $string, int $start, ?int $length = null): string |
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241 | { |
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242 | return mb_substr($string, $start, $length, 'UTF-8'); |
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243 | } |
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244 | |||
245 | /** |
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246 | * Convert a string to studly caps case. |
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247 | * |
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248 | * @param string $string String |
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249 | */ |
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250 | public static function studly(string $string): string |
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251 | { |
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252 | $key = $string; |
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253 | |||
254 | if (isset(static::$cache['studly'][$key])) { |
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255 | return static::$cache['studly'][$key]; |
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256 | } |
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257 | |||
258 | $string = ucwords(str_replace(['-', '_'], ' ', $string)); |
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259 | |||
260 | return static::$cache['studly'][$key] = str_replace(' ', '', $string); |
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261 | } |
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262 | |||
263 | /** |
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264 | * Convert a string to snake case. |
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265 | * |
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266 | * @param string $string String |
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267 | * @param string $delimiter Delimeter |
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268 | */ |
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269 | public static function snake(string $string, string $delimiter = '_'): string |
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270 | { |
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271 | $key = $string; |
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272 | |||
273 | if (isset(static::$cache['snake'][$key][$delimiter])) { |
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274 | return static::$cache['snake'][$key][$delimiter]; |
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275 | } |
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276 | |||
277 | if (! ctype_lower($string)) { |
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278 | $string = preg_replace('/\s+/u', '', ucwords($string)); |
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279 | |||
280 | $string = static::lower(preg_replace('/(.)(?=[A-Z])/u', '$1' . $delimiter, $string)); |
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281 | } |
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282 | |||
283 | return static::$cache['snake'][$key][$delimiter] = $string; |
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284 | } |
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285 | |||
286 | /** |
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287 | * Convert a string to camel case. |
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288 | * |
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289 | * @param string $string String |
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290 | */ |
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291 | public static function camel(string $string): string |
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292 | { |
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293 | if (isset(static::$cache['camel'][$string])) { |
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294 | return static::$cache['camel'][$string]; |
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295 | } |
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296 | |||
297 | return static::$cache['camel'][$string] = lcfirst(static::studly($string)); |
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298 | } |
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299 | |||
300 | /** |
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301 | * Convert a string to kebab case. |
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302 | * |
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303 | * @param string $string String |
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304 | */ |
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305 | public static function kebab(string $string): string |
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306 | { |
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307 | return static::snake($string, '-'); |
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308 | } |
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309 | |||
310 | /** |
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311 | * Limit the number of words in a string. |
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312 | * |
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313 | * @param string $string String |
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314 | * @param int $words Words limit |
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315 | * @param string $append Text to append to the string IF it gets truncated |
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316 | */ |
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317 | public static function words(string $string, int $words = 100, string $append = '...'): string |
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318 | { |
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319 | preg_match('/^\s*+(?:\S++\s*+){1,' . $words . '}/u', $string, $matches); |
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320 | |||
321 | if (! isset($matches[0]) || static::length($string) === static::length($matches[0])) { |
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322 | return $string; |
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323 | } |
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324 | |||
325 | return static::trimRight($matches[0]) . $append; |
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326 | } |
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327 | |||
328 | /** |
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329 | * Return information about words used in a string |
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330 | * |
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331 | * @param string $string String |
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332 | * @param int $format Specify the return value of this function. The current supported values are: |
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333 | * 0 - returns the number of words found |
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334 | * 1 - returns an array containing all the words found inside the string |
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335 | * 2 - returns an associative array, where the key is the numeric position of the word inside the string and the value is the actual word itself |
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336 | * @param string $charlist A list of additional characters which will be considered as 'word' |
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337 | */ |
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338 | public static function wordsCount(string $string, int $format = 0, string $charlist = '') |
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339 | { |
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340 | return str_word_count($string, $format, $charlist); |
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341 | } |
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342 | |||
343 | /** |
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344 | * Determine if a given string contains a given substring. |
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345 | * |
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346 | * @param string $haystack The string being checked. |
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347 | * @param string|string[] $needles The string to find in haystack. |
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348 | */ |
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349 | public static function contains(string $haystack, $needles): bool |
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350 | { |
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351 | foreach ((array) $needles as $needle) { |
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352 | if ($needle !== '' && mb_strpos($haystack, $needle) !== false) { |
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353 | return true; |
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354 | } |
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355 | } |
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356 | |||
357 | return false; |
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358 | } |
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359 | |||
360 | /** |
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361 | * Determine if a given string contains all array values. |
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362 | * |
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363 | * @param string $haystack The string being checked. |
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364 | * @param string[] $needles The array of strings to find in haystack. |
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365 | */ |
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366 | public static function containsAll(string $haystack, array $needles): bool |
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367 | { |
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368 | foreach ($needles as $needle) { |
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369 | if (! static::contains($haystack, $needle)) { |
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370 | return false; |
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371 | } |
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372 | } |
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373 | |||
374 | return true; |
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375 | } |
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376 | |||
377 | /** |
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378 | * Determine if a given string contains any of array values. |
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379 | * |
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380 | * @param string $haystack The string being checked. |
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381 | * @param string[] $needles The array of strings to find in haystack. |
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382 | */ |
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383 | public static function containsAny(string $haystack, array $needles): bool |
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384 | { |
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385 | foreach ($needles as $needle) { |
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386 | if (static::contains($haystack, $needle)) { |
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387 | return true; |
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388 | } |
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389 | } |
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390 | |||
391 | return false; |
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392 | } |
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393 | |||
394 | /** |
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395 | * Converts the first character of a string to upper case |
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396 | * and leaves the other characters unchanged. |
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397 | * |
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398 | * @param string $string String |
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399 | */ |
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400 | public static function ucfirst(string $string): string |
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401 | { |
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402 | return static::upper(static::substr($string, 0, 1)) . static::substr($string, 1); |
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403 | } |
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404 | |||
405 | /** |
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406 | * Converts the first character of every word of string to upper case and the others to lower case. |
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407 | * |
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408 | * @param string $string String |
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409 | */ |
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410 | public static function capitalize(string $string): string |
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413 | } |
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414 | |||
415 | /** |
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416 | * Strip whitespace (or other characters) from the beginning and end of a string. |
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417 | * |
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418 | * @param string $string The string that will be trimmed. |
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419 | * @param string $character_mask Optionally, the stripped characters can also be |
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420 | * specified using the character_mask parameter.. |
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421 | */ |
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422 | public static function trim(string $string, string $character_mask = " \t\n\r\0\x0B"): string |
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423 | { |
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424 | return trim($string, $character_mask); |
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425 | } |
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426 | |||
427 | /** |
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428 | * Strip whitespace (or other characters) from the beginning of a string. |
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429 | * |
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430 | * @param string $string The string that will be trimmed. |
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431 | * @param string $character_mask Optionally, the stripped characters can also be |
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432 | * specified using the character_mask parameter.. |
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433 | */ |
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434 | public static function trimLeft(string $string, string $character_mask = " \t\n\r\0\x0B"): string |
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435 | { |
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436 | return ltrim($string, $character_mask); |
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437 | } |
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438 | |||
439 | /** |
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440 | * Strip whitespace (or other characters) from the end of a string. |
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441 | * |
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442 | * @param string $string The string that will be trimmed. |
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443 | * @param string $character_mask Optionally, the stripped characters can also be |
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444 | * specified using the character_mask parameter.. |
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445 | */ |
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446 | public static function trimRight(string $string, string $character_mask = " \t\n\r\0\x0B"): string |
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447 | { |
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448 | return rtrim($string, $character_mask); |
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449 | } |
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450 | |||
451 | /** |
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452 | * Reverses string. |
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453 | * |
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454 | * @param string $string String |
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455 | */ |
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456 | public static function reverse(string $string): string |
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457 | { |
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458 | $result = ''; |
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459 | |||
460 | for ($i = static::length($string); $i >= 0; $i--) { |
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461 | $result .= static::substr($string, $i, 1); |
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462 | } |
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463 | |||
464 | return $result; |
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465 | } |
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466 | |||
467 | /** |
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468 | * Get array of segments from a string based on a delimiter. |
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469 | * |
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470 | * @param string $string String |
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471 | * @param string $delimiter Delimeter |
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472 | */ |
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473 | public static function segments(string $string, string $delimiter = ' '): array |
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474 | { |
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475 | return explode($delimiter, $string); |
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476 | } |
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477 | |||
478 | /** |
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479 | * Get a segment from a string based on a delimiter. |
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480 | * Returns an empty string when the offset doesn't exist. |
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481 | * Use a negative index to start counting from the last element. |
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482 | * |
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483 | * @param string $string String |
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484 | * @param int $index Index |
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485 | * @param string $delimiter Delimeter |
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486 | */ |
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487 | public static function segment(string $string, int $index, string $delimiter = ' '): string |
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488 | { |
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489 | $segments = explode($delimiter, $string); |
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490 | |||
491 | if ($index < 0) { |
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492 | $segments = array_reverse($segments); |
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493 | $index = abs($index) - 1; |
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494 | } |
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495 | |||
496 | return $segments[$index] ?? ''; |
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497 | } |
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498 | |||
499 | /** |
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500 | * Get the first segment from a string based on a delimiter. |
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501 | * |
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502 | * @param string $string String |
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503 | * @param string $delimiter Delimeter |
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504 | */ |
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505 | public static function firstSegment(string $string, string $delimiter = ' '): string |
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506 | { |
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507 | return static::segment($string, 0, $delimiter); |
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508 | } |
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509 | |||
510 | /** |
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511 | * Get the last segment from a string based on a delimiter. |
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512 | * |
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513 | * @param string $string String |
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514 | * @param string $delimiter Delimeter |
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515 | */ |
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516 | public static function lastSegment(string $string, string $delimiter = ' '): string |
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517 | { |
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518 | return static::segment($string, -1, $delimiter); |
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519 | } |
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520 | |||
521 | /** |
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522 | * Get the portion of a string between two given values. |
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523 | * |
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524 | * @param string $string String |
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525 | * @param string $from From |
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526 | * @param string $to To |
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527 | */ |
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528 | public static function between(string $string, string $from, string $to): string |
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529 | { |
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530 | if ($from === '' || $to === '') { |
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531 | return $string; |
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532 | } |
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533 | |||
534 | return static::beforeLast(static::after($string, $from), $to); |
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535 | } |
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536 | |||
537 | /** |
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538 | * Get the portion of a string before the first occurrence of a given value. |
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539 | * |
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540 | * @param string $string String |
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541 | * @param string $search Search |
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542 | */ |
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543 | public static function before(string $string, string $search): string |
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544 | { |
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545 | return $search === '' ? $string : explode($search, $string)[0]; |
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546 | } |
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547 | |||
548 | /** |
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549 | * Get the portion of a string before the last occurrence of a given value. |
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550 | * |
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551 | * @param string $string String |
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552 | * @param string $search Search |
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553 | */ |
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554 | public static function beforeLast(string $string, string $search): string |
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555 | { |
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556 | if ($search === '') { |
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557 | return $string; |
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558 | } |
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559 | |||
560 | $position = mb_strrpos($string, $search); |
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561 | |||
562 | if ($position === false) { |
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563 | return $string; |
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564 | } |
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565 | |||
566 | return static::substr($string, 0, $position); |
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567 | } |
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568 | |||
569 | /** |
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570 | * Return the remainder of a string after the first occurrence of a given value. |
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571 | * |
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572 | * @param string $string String |
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573 | * @param string $search Search |
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574 | */ |
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575 | public static function after(string $string, string $search): string |
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576 | { |
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577 | return $search === '' ? $string : array_reverse(explode($search, $string, 2))[0]; |
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578 | } |
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579 | |||
580 | /** |
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581 | * Return the remainder of a string after the last occurrence of a given value. |
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582 | * |
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583 | * @param string $string String |
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584 | * @param string $search Search |
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585 | */ |
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586 | public static function afterLast(string $string, string $search): string |
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587 | { |
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588 | if ($search === '') { |
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589 | return $string; |
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590 | } |
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591 | |||
592 | $position = mb_strrpos($string, (string) $search); |
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593 | |||
594 | if ($position === false) { |
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595 | return $string; |
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596 | } |
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597 | |||
598 | return static::substr($string, $position + static::length($search)); |
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599 | } |
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600 | |||
601 | /** |
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602 | * Pad both sides of a string with another. |
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603 | * |
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604 | * @param string $string The input string. |
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605 | * @param int $length If the value of pad_length is negative, less than, or equal to the length of the input string, no padding takes place, and input will be returned. |
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606 | * @param string $pad The pad string may be truncated if the required number of padding characters can't be evenly divided by the pad_string's length. |
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607 | */ |
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608 | public static function padBoth(string $string, int $length, string $pad = ' '): string |
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609 | { |
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610 | return str_pad($string, $length, $pad, STR_PAD_BOTH); |
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611 | } |
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612 | |||
613 | /** |
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614 | * Pad the left side of a string with another. |
||
615 | * |
||
616 | * @param string $string The input string. |
||
617 | * @param int $length If the value of pad_length is negative, less than, or equal to the length of the input string, no padding takes place, and input will be returned. |
||
618 | * @param string $pad The pad string may be truncated if the required number of padding characters can't be evenly divided by the pad_string's length. |
||
619 | */ |
||
620 | public static function padLeft(string $string, int $length, string $pad = ' '): string |
||
621 | { |
||
622 | return str_pad($string, $length, $pad, STR_PAD_LEFT); |
||
623 | } |
||
624 | |||
625 | /** |
||
626 | * Pad the right side of a string with another. |
||
627 | * |
||
628 | * @param string $string The input string. |
||
629 | * @param int $length If the value of pad_length is negative, less than, or equal to the length of the input string, no padding takes place, and input will be returned. |
||
630 | * @param string $pad The pad string may be truncated if the required number of padding characters can't be evenly divided by the pad_string's length. |
||
631 | */ |
||
632 | public static function padRight(string $string, int $length, string $pad = ' '): string |
||
633 | { |
||
634 | return str_pad($string, $length, $pad, STR_PAD_RIGHT); |
||
635 | } |
||
636 | |||
637 | /** |
||
638 | * Strip all whitespaces from the given string. |
||
639 | * |
||
640 | * @param string $string The string to strip |
||
641 | */ |
||
642 | public static function stripSpaces(string $string): string |
||
643 | { |
||
644 | return preg_replace('/\s+/', '', $string); |
||
645 | } |
||
646 | |||
647 | /** |
||
648 | * Replace a given value in the string sequentially with an array. |
||
649 | * |
||
650 | * @param string $string String |
||
651 | * @param string $search Search |
||
652 | * @param array $replace Replace |
||
653 | */ |
||
654 | public static function replaceArray(string $string, string $search, array $replace): string |
||
655 | { |
||
656 | $segments = explode($search, $string); |
||
657 | |||
658 | $result = array_shift($segments); |
||
659 | |||
660 | foreach ($segments as $segment) { |
||
661 | $result .= (array_shift($replace) ?? $search) . $segment; |
||
662 | } |
||
663 | |||
664 | return $result; |
||
665 | } |
||
666 | |||
667 | /** |
||
668 | * Replace the first occurrence of a given value in the string. |
||
669 | * |
||
670 | * @param string $string String |
||
671 | * @param string $search Search |
||
672 | * @param string $replace Replace |
||
673 | */ |
||
674 | public static function replaceFirst(string $string, string $search, string $replace): string |
||
687 | } |
||
688 | |||
689 | /** |
||
690 | * Replace the last occurrence of a given value in the string. |
||
691 | * |
||
692 | * @param string $string String |
||
693 | * @param string $search Search |
||
694 | * @param string $replace Replace |
||
695 | */ |
||
696 | public static function replaceLast(string $string, string $search, string $replace): string |
||
697 | { |
||
698 | $position = strrpos($string, $search); |
||
699 | |||
700 | if ($position !== false) { |
||
701 | return substr_replace($string, $replace, $position, strlen($search)); |
||
702 | } |
||
703 | |||
704 | return $subject; |
||
|
|||
705 | } |
||
706 | |||
707 | /** |
||
708 | * Begin a string with a single instance of a given value. |
||
709 | * |
||
710 | * @param string $string String |
||
711 | * @param string $prefix Prefix |
||
712 | */ |
||
713 | public static function start(string $string, string $prefix): string |
||
714 | { |
||
715 | $quoted = preg_quote($prefix, '/'); |
||
716 | |||
717 | return $prefix . preg_replace('/^(?:' . $quoted . ')+/u', '', $string); |
||
718 | } |
||
719 | |||
720 | /** |
||
721 | * Determine if a given string starts with a given substring. |
||
722 | * |
||
723 | * @param string $haystack Haystack |
||
724 | * @param string|string[] $needles needles |
||
725 | */ |
||
726 | public static function startsWith(string $haystack, $needles): bool |
||
727 | { |
||
728 | foreach ((array) $needles as $needle) { |
||
729 | if ((string) $needle !== '' && strncmp($haystack, $needle, strlen($needle)) === 0) { |
||
730 | return true; |
||
731 | } |
||
732 | } |
||
733 | |||
734 | return false; |
||
735 | } |
||
736 | |||
737 | /** |
||
738 | * Determine if a given string ends with a given substring. |
||
739 | * |
||
740 | * @param string $haystack Haystack |
||
741 | * @param string|string[] $needles needles |
||
742 | */ |
||
743 | public static function endsWith(string $haystack, $needles): bool |
||
744 | { |
||
745 | foreach ((array) $needles as $needle) { |
||
746 | if ($needle !== '' && substr($haystack, -strlen($needle)) === (string) $needle) { |
||
747 | return true; |
||
748 | } |
||
749 | } |
||
750 | |||
751 | return false; |
||
752 | } |
||
753 | |||
754 | /** |
||
755 | * Cap a string with a single instance of a given value. |
||
756 | * |
||
757 | * @param string $string String |
||
758 | * @param string $cap Cap |
||
759 | */ |
||
760 | public static function finish(string $string, string $cap): string |
||
765 | } |
||
766 | |||
767 | /** |
||
768 | * Generate a hash string from the input string. |
||
769 | * |
||
770 | * @param string $string String |
||
771 | * @param string $algorithm Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..). |
||
772 | * For a list of supported algorithms see hash_algos(). Default is md5. |
||
773 | * @param string $raw_output When set to TRUE, outputs raw binary data. FALSE outputs lowercase hexits. Default is FALSE |
||
774 | */ |
||
775 | public static function hash(string $string, string $algorithm = 'md5', bool $raw_output = false): string |
||
776 | { |
||
777 | if (in_array($algorithm, hash_algos())) { |
||
778 | return hash($algorithm, $string, $raw_output); |
||
779 | } |
||
780 | |||
781 | return $string; |
||
782 | } |
||
783 | } |
||
784 |