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72 lines
1.8 KiB
72 lines
1.8 KiB
<?php |
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/** |
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* WPSEO plugin file. |
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* |
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* @package WPSEO\Internals |
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*/ |
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/** |
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* Class WPSEO_Validator. |
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*/ |
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class WPSEO_Validator { |
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/** |
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* Validates whether the passed variable is a boolean. |
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* |
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* @param mixed $variable The variable to validate. |
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* |
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* @return bool Whether or not the passed variable is a valid boolean. |
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*/ |
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public static function is_boolean( $variable ) { |
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if ( is_bool( $variable ) ) { |
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return true; |
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} |
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return filter_var( $variable, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE ) !== null; |
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} |
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/** |
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* Validates whether the passed variable is a string. |
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* |
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* @param mixed $variable The variable to validate. |
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* |
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* @return bool Whether or not the passed variable is a string. |
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*/ |
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public static function is_string( $variable ) { |
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return is_string( $variable ); |
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} |
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/** |
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* Validates whether the passed variable is a non-empty string. |
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* |
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* @param mixed $variable The variable to validate. |
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* |
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* @return bool Whether or not the passed value is a non-empty string. |
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*/ |
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public static function is_non_empty_string( $variable ) { |
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return self::is_string( $variable ) && $variable !== ''; |
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} |
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/** |
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* Validates whether the passed variable is an integer. |
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* |
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* @param mixed $variable The variable to validate. |
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* |
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* @return bool Whether or not the passed variable is an integer. |
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*/ |
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public static function is_integer( $variable ) { |
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return filter_var( $variable, FILTER_VALIDATE_INT ) || filter_var( $variable, FILTER_VALIDATE_INT ) === 0; |
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} |
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/** |
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* Determines whether a particular key exists within the passed dataset. |
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* |
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* @param array $data The dataset to search through. |
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* @param string $key The key to search for. |
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* |
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* @return bool Whether or not the key exists. |
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*/ |
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public static function key_exists( array $data, $key ) { |
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return array_key_exists( $key, $data ); |
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} |
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}
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