WP_Rewrite::preg_index( int $number ): string
Indexes for matches for usage in preg_*() functions.
Description
The format of the string is, with empty matches property value, ‘$NUM’.
The ‘NUM’ will be replaced with the value in the $number parameter. With the matches property not empty, the value of the returned string will contain that value of the matches property. The format then will be ‘$MATCHES[NUM]’, with MATCHES as the value in the property and NUM the value of the $number parameter.
Parameters
-
$numberint Required -
Index number.
Return
string
Source
File: wp-includes/class-wp-rewrite.php.
View all references
public function preg_index( $number ) {
$match_prefix = '$';
$match_suffix = '';
if ( ! empty( $this->matches ) ) {
$match_prefix = '$' . $this->matches . '[';
$match_suffix = ']';
}
return "$match_prefix$number$match_suffix";
}
Changelog
| Version | Description |
|---|---|
| 1.5.0 | Introduced. |