WP_Rewrite::preg_index( int $number )
Indexes for matches for usage in preg_*() functions.
Description
The format of the string is, with empty matches property value, ‘$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
- $number
-
(int) (Required) Index number.
Return
(string)
Source
File: wp-includes/class-wp-rewrite.php
public function preg_index($number) {
$match_prefix = '$';
$match_suffix = '';
if ( ! empty($this->matches) ) {
$match_prefix = '$' . $this->matches . '[';
$match_suffix = ']';
}
return "$match_prefix$number$match_suffix";
}
Changelog
| Version | Description |
|---|---|
| WP-1.5.0 | Introduced. |