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wp_spaces_regexp › WordPress Function
Since4.0.0
已弃用n/a
› wp_spaces_regexp ( 没有参数 )
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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.Related Functions: wp_cache_reset, wp_safe_remote_get, wp_cache_get, wp_safe_remote_post, wp_safe_redirect
源码
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; }