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<?php |
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/** |
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* Created by PhpStorm. |
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* User: lenovo |
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* Date: 6/15/2018 |
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* Time: 11:18 AM |
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*/ |
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namespace TimSDK\Support; |
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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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* Determine if a given string starts with a given substring. |
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* |
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* @param string $haystack |
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* @param string|array $needles |
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* @return bool |
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*/ |
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public static function startsWith($haystack, $needles) |
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{ |
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foreach ((array) $needles as $needle) { |
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if ($needle !== '' && substr($haystack, 0, strlen($needle)) === (string) $needle) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Determine if a given string ends with a given substring. |
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* |
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* @param string $haystack |
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* @param string|array $needles |
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* @return bool |
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*/ |
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public static function endsWith($haystack, $needles) |
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{ |
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foreach ((array) $needles as $needle) { |
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if (substr($haystack, -strlen($needle)) === (string) $needle) { |
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return true; |
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} |
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} |
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return false; |
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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 $delimiter |
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* @return string |
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*/ |
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public static function snake($value, $delimiter = '_') |
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{ |
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$key = $value; |
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if (isset(static::$snakeCache[$key][$delimiter])) { |
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return static::$snakeCache[$key][$delimiter]; |
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} |
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if (! ctype_lower($value)) { |
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$value = preg_replace('/\s+/u', '', ucwords($value)); |
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$value = static::lower(preg_replace('/(.)(?=[A-Z])/u', '$1'.$delimiter, $value)); |
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} |
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return static::$snakeCache[$key][$delimiter] = $value; |
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} |
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/** |
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* Convert the given string to lower-case. |
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* |
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* @param string $value |
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* @return string |
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*/ |
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public static function lower($value) |
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{ |
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return mb_strtolower($value, 'UTF-8'); |
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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 $value |
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* @return string |
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*/ |
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public static function upper($value) |
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{ |
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return mb_strtoupper($value, 'UTF-8'); |
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} |
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} |
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JimChenWYU /
TimSDK
