wpdb::check_ascii( string $string )
Check 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
-
(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;
}
Changelog
Version | Description |
---|---|
WP-4.2.0 | Introduced. |