wp_spaces_regexp() WP 1.0
Returns the regexp for common whitespace characters.
By default, spaces include new lines, tabs, nbsp entities, and the UTF-8 nbsp. This is designed to replace the PCRE \s sequence. In ticket #22692, that sequence was found to be unreliable due to random inclusion of the A0 byte.
1 time — 0.000001 sec (speed of light) | 50000 times — 0.000001 sec (speed of light) | PHP 7.3.12, WP 5.3.2
Hooks from the function
Return
String. The spaces regexp.
Usage
wp_spaces_regexp();
Changelog
| Since 4.0.0 | Introduced. |
Code of wp_spaces_regexp() wp spaces regexp WP 5.8.1
function wp_spaces_regexp() {
static $spaces = '';
if ( empty( $spaces ) ) {
/**
* Filters the regexp for common whitespace characters.
*
* This string is substituted for the \s sequence as needed in regular
* expressions. For websites not written in English, different characters
* may represent whitespace. For websites not encoded in UTF-8, the 0xC2 0xA0
* sequence may not be in use.
*
* @since 4.0.0
*
* @param string $spaces Regexp pattern for matching common whitespace characters.
*/
$spaces = apply_filters( 'wp_spaces_regexp', '[\r\n\t ]|\xC2\xA0| ' );
}
return $spaces;
}