You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
1.8 KiB
73 lines
1.8 KiB
5 years ago
|
<?php
|
||
|
/**
|
||
|
* WPSEO plugin file.
|
||
|
*
|
||
|
* @package WPSEO\Internals
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* Class WPSEO_Validator.
|
||
|
*/
|
||
|
class WPSEO_Validator {
|
||
|
|
||
|
/**
|
||
|
* Validates whether the passed variable is a boolean.
|
||
|
*
|
||
|
* @param mixed $variable The variable to validate.
|
||
|
*
|
||
|
* @return bool Whether or not the passed variable is a valid boolean.
|
||
|
*/
|
||
|
public static function is_boolean( $variable ) {
|
||
|
if ( is_bool( $variable ) ) {
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
return filter_var( $variable, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE ) !== null;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Validates whether the passed variable is a string.
|
||
|
*
|
||
|
* @param mixed $variable The variable to validate.
|
||
|
*
|
||
|
* @return bool Whether or not the passed variable is a string.
|
||
|
*/
|
||
|
public static function is_string( $variable ) {
|
||
|
return is_string( $variable );
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Validates whether the passed variable is a non-empty string.
|
||
|
*
|
||
|
* @param mixed $variable The variable to validate.
|
||
|
*
|
||
|
* @return bool Whether or not the passed value is a non-empty string.
|
||
|
*/
|
||
|
public static function is_non_empty_string( $variable ) {
|
||
|
return self::is_string( $variable ) && $variable !== '';
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Validates whether the passed variable is an integer.
|
||
|
*
|
||
|
* @param mixed $variable The variable to validate.
|
||
|
*
|
||
|
* @return bool Whether or not the passed variable is an integer.
|
||
|
*/
|
||
|
public static function is_integer( $variable ) {
|
||
|
return filter_var( $variable, FILTER_VALIDATE_INT ) || filter_var( $variable, FILTER_VALIDATE_INT ) === 0;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* Determines whether a particular key exists within the passed dataset.
|
||
|
*
|
||
|
* @param array $data The dataset to search through.
|
||
|
* @param string $key The key to search for.
|
||
|
*
|
||
|
* @return bool Whether or not the key exists.
|
||
|
*/
|
||
|
public static function key_exists( array $data, $key ) {
|
||
|
return array_key_exists( $key, $data );
|
||
|
}
|
||
|
}
|