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<?php |
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namespace EntWeChat\Support; |
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use EntWeChat\Core\Exceptions\RuntimeException; |
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class Str |
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{ |
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/** |
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* The cache of snake-cased words. |
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* |
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* @var array |
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*/ |
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protected static $snakeCache = []; |
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/** |
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* The cache of camel-cased words. |
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* |
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* @var array |
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*/ |
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protected static $camelCache = []; |
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/** |
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* The cache of studly-cased words. |
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* |
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* @var array |
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*/ |
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protected static $studlyCache = []; |
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/** |
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* Convert a value to camel case. |
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* |
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* @param string $value |
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* |
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* @return string |
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*/ |
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public static function camel($value) |
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{ |
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if (isset(static::$camelCache[$value])) { |
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return static::$camelCache[$value]; |
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} |
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return static::$camelCache[$value] = lcfirst(static::studly($value)); |
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} |
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/** |
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* Generate a more truly "random" alpha-numeric string. |
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* |
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* @param int $length |
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* |
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* @throws \RuntimeException |
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* |
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* @return string |
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*/ |
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public static function random($length = 16) |
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{ |
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$string = ''; |
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while (($len = strlen($string)) < $length) { |
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$size = $length - $len; |
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$bytes = static::randomBytes($size); |
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$string .= substr(str_replace(['/', '+', '='], '', base64_encode($bytes)), 0, $size); |
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} |
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return $string; |
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} |
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/** |
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* Generate a more truly "random" bytes. |
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* |
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* @param int $length |
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* |
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* @throws RuntimeException |
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* |
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* @return string |
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*/ |
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public static function randomBytes($length = 16) |
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{ |
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if (function_exists('random_bytes')) { |
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$bytes = random_bytes($length); |
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} elseif (function_exists('openssl_random_pseudo_bytes')) { |
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$bytes = openssl_random_pseudo_bytes($length, $strong); |
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if ($bytes === false || $strong === false) { |
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throw new RuntimeException('Unable to generate random string.'); |
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} |
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} else { |
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throw new RuntimeException('OpenSSL extension is required for PHP 5 users.'); |
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} |
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return $bytes; |
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} |
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/** |
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* Generate a "random" alpha-numeric string. |
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* |
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* Should not be considered sufficient for cryptography, etc. |
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* |
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* @param int $length |
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* |
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* @return string |
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*/ |
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public static function quickRandom($length = 16) |
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{ |
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$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; |
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return substr(str_shuffle(str_repeat($pool, $length)), 0, $length); |
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} |
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/** |
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* Convert the given string to upper-case. |
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* |
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* @param string $value |
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* |
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* @return string |
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*/ |
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public static function upper($value) |
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{ |
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return mb_strtoupper($value); |
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} |
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/** |
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* Convert the given string to title case. |
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* |
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* @param string $value |
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* |
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* @return string |
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*/ |
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public static function title($value) |
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{ |
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return mb_convert_case($value, MB_CASE_TITLE, 'UTF-8'); |
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} |
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/** |
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* Convert a string to snake case. |
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* |
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* @param string $value |
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* @param string $delimiter |
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* |
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* @return string |
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*/ |
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public static function snake($value, $delimiter = '_') |
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{ |
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$key = $value.$delimiter; |
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if (isset(static::$snakeCache[$key])) { |
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return static::$snakeCache[$key]; |
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} |
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if (!ctype_lower($value)) { |
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$value = strtolower(preg_replace('/(.)(?=[A-Z])/', '$1'.$delimiter, $value)); |
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} |
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return static::$snakeCache[$key] = $value; |
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} |
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/** |
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* Convert a value to studly caps case. |
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* |
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* @param string $value |
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* |
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* @return string |
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*/ |
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public static function studly($value) |
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{ |
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$key = $value; |
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if (isset(static::$studlyCache[$key])) { |
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return static::$studlyCache[$key]; |
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} |
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$value = ucwords(str_replace(['-', '_'], ' ', $value)); |
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return static::$studlyCache[$key] = str_replace(' ', '', $value); |
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} |
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} |
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freyo /
entwechat
