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<?php |
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namespace luya\helpers; |
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use yii\helpers\BaseStringHelper; |
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/** |
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* Helper methods when dealing with Strings. |
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* |
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* Extends the {{yii\helpers\StringHelper}} class by some usefull functions like: |
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* |
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* + {{luya\helpers\StringHelper::typeCast()}} |
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* + {{luya\helpers\StringHelper::isFloat()}} |
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* + {{luya\helpers\StringHelper::replaceFirst()}} |
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* + {{luya\helpers\StringHelper::contains()}} |
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* + {{luya\helpers\StringHelper::startsWithWildcard()}} |
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* + {{luya\helpers\StringHelper::typeCastNumeric()}} |
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* |
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* @author Basil Suter <[email protected]> |
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* @since 1.0.0 |
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*/ |
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class StringHelper extends BaseStringHelper |
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{ |
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/** |
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* TypeCast a string to its specific types. |
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* |
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* Arrays will passed to to the {{luya\helpers\ArrayHelper::typeCast()}} class. |
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* |
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* @param mixed $string The input string to type cast. Arrays will be passted to {{luya\helpers\ArrayHelper::typeCast()}}. |
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* @return mixed The new type casted value, if the input is an array the output is the typecasted array. |
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*/ |
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public static function typeCast($string) |
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{ |
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if (is_numeric($string)) { |
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return static::typeCastNumeric($string); |
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} elseif (is_array($string)) { |
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return ArrayHelper::typeCast($string); |
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} |
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return $string; |
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} |
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/** |
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* Checke whether a strings starts with the wildcard symbole and compares the string before the wild card symbol * |
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* with the string provided, if there is NO wildcard symbold it always return false. |
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* |
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* |
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* @param string $string The string which should be checked with $with comperator |
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* @param string $with The with string which must end with the wildcard symbol * e.g. `foo*` would match string `foobar`. |
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* @param boolean $caseSensitive Whether to compare the starts with string as case sensitive or not, defaults to true. |
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* @return boolean Whether the string starts with the wildcard marked string or not, if no wildcard symbol is contained. |
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* in the $with it always returns false. |
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*/ |
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public static function startsWithWildcard($string, $with, $caseSensitive = true) |
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{ |
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if (substr($with, -1) != "*") { |
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return false; |
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} |
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return self::startsWith($string, rtrim($with, '*'), $caseSensitive); |
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} |
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/** |
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* TypeCast a numeric value to float or integer. |
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* |
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* If the given value is not a numeric or float value it will be returned as it is. In order to find out whether its float |
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* or not use {{luya\helpers\StringHelper::isFloat()}}. |
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* |
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* @param mixed $value The given value to parse. |
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* @return mixed Returns the original value if not numeric or integer, float casted value. |
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*/ |
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public static function typeCastNumeric($value) |
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{ |
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if (!self::isFloat($value)) { |
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return $value; |
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} |
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if (intval($value) == $value) { |
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return (int) $value; |
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} |
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return (float) $value; |
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} |
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/** |
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* Checks whether a string is a float value. |
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* |
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* Compared to `is_float` function of php, it only ensures whether the input variable is type float. |
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* |
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* @param mixed $value The value to check whether its float or not. |
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* @return boolean Whether its a float value or not. |
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*/ |
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public static function isFloat($value) |
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{ |
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if (is_float($value)) { |
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return true; |
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} |
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return ($value == (string)(float) $value); |
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} |
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/** |
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* Replace only the first occurance found inside the string. |
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* |
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* The replace first method is *case sensitive*. |
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* |
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* ```php |
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* StringHelper::replaceFirst('abc', '123', 'abc abc abc'); // returns "123 abc abc" |
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* ``` |
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* |
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* @param string $search Search string to look for. |
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* @param string $replace Replacement value for the first found occurrence. |
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* @param string $subject The string you want to look up to replace the first element. |
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* @return mixed Replaced string |
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*/ |
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public static function replaceFirst($search, $replace, $subject) |
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{ |
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return preg_replace('/'.preg_quote($search, '/').'/', $replace, $subject, 1); |
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} |
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/** |
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* Check whether a char or word exists in a string or not. |
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* |
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* This method is case sensitive. The need can be an array with multiple chars or words who |
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* are going to look up in the haystack string. |
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* |
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* If an array of needle words is provided the $strict parameter defines whether all need keys must be found |
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* in the string to get the `true` response or if just one of the keys are found the response is already `true`. |
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* |
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* @param string|array $needle The char or word to find in the $haystack. Can be an array to multi find words or char in the string. |
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* @param string $haystack The haystack where the $needle string should be looked up. |
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* @param boolean $strict If an array of needles is provided the $strict parameter defines whether all keys must be found ($strict = true) or just one result must be found ($strict = false). |
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* @return boolean If an array of values is provided the response may change depending on $findAll. |
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*/ |
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public static function contains($needle, $haystack, $strict = false) |
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{ |
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$needles = (array) $needle; |
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$state = false; |
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foreach ($needles as $item) { |
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$state = (strpos($haystack, $item) !== false); |
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if ($strict && !$state) { |
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return false; |
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} |
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if (!$strict && $state) { |
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return true; |
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} |
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} |
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return $state; |
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} |
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/** |
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* Minify html by removing spaces, tabs. |
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* |
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* @param string $content |
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* @return mixed |
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* @since 1.0.7 |
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*/ |
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public static function minify($content) |
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{ |
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return preg_replace(['/\>[^\S ]+/s', '/[^\S ]+\</s', '/(\s)+/s'], ['>', '<', '\\1'], trim($content)); |
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} |
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} |
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luyadev /
luya
