wpdb::check_ascii() WordPress Method
The wpdb::check_ascii() method is used to check if a given string is ASCII. ASCII is a character encoding standard that is used to represent text in computers. This method is useful for checking if a given string is composed entirely of ASCII characters.
wpdb::check_ascii( string $string ) #
Checks if a string is ASCII.
Description
The negative regex is faster for non-ASCII strings, as it allows the search to finish as soon as it encounters a non-ASCII character.
Parameters
- $string
(string)(Required)String to check.
Return
(bool) True if ASCII, false if not.
Source
File: wp-includes/wp-db.php
protected function check_ascii( $string ) {
if ( function_exists( 'mb_check_encoding' ) ) {
if ( mb_check_encoding( $string, 'ASCII' ) ) {
return true;
}
} elseif ( ! preg_match( '/[^\x00-\x7F]/', $string ) ) {
return true;
}
return false;
}
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Changelog
| Version | Description |
|---|---|
| 4.2.0 | Introduced. |