wp_spaces_regexp()
Returns the regexp for common whitespace characters.
Description
By default, spaces include new lines, tabs, nbsp entities, and the UTF-8 nbsp. This is designed to replace the PCRE \s sequence. In https://core.trac.wordpress.org/ticket/22692, that sequence was found to be unreliable due to random inclusion of the A0 byte.
Return
(string) The spaces regexp.
Source
File: wp-includes/formatting.php
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 WP-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;
}
Changelog
| Version | Description |
|---|---|
| WP-4.0.0 | Introduced. |