Alert: This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_links_add_base( string $m ): string

Callback to add a base URL to relative links in passed content.


$m string Required
The matched link.

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string The processed link.

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File: wp-includes/formatting.php. View all references

function _links_add_base( $m ) {
	global $_links_add_base;
	// 1 = attribute name  2 = quotation mark  3 = URL.
	return $m[1] . '=' . $m[2] .
		( preg_match( '#^(\w{1,20}):#', $m[3], $protocol ) && in_array( $protocol[1], wp_allowed_protocols(), true ) ?
			$m[3] :
			WP_Http::make_absolute_url( $m[3], $_links_add_base )
		. $m[2];

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Version Description
2.7.0 Introduced.

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