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_make_web_ftp_clickable_cb( array $matches )

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.

Callback to convert URL match to HTML A element.

Description

This function was backported from 2.5.0 to 2.3.2. Regex callback for make_clickable().

Parameters

$matches

(array) (Required) Single Regex Match.

Return

(string) HTML A element with URL address.

Source

File: wp-includes/formatting.php 

function _make_web_ftp_clickable_cb( $matches ) {
	$ret  = '';
	$dest = $matches[2];
	$dest = 'http://' . $dest;

	// Removed trailing [.,;:)] from URL.
	$last_char = substr( $dest, -1 );
	if ( in_array( $last_char, array( '.', ',', ';', ':', ')' ), true ) === true ) {
		$ret  = $last_char;
		$dest = substr( $dest, 0, strlen( $dest ) - 1 );
	}

	$dest = esc_url( $dest );
	if ( empty( $dest ) ) {
		return $matches[0];
	}

	if ( 'comment_text' === current_filter() ) {
		$rel = 'nofollow ugc';
	} else {
		$rel = 'nofollow';
	}

	/** This filter is documented in wp-includes/formatting.php */
	$rel = apply_filters( 'make_clickable_rel', $rel, $dest );
	$rel = esc_attr( $rel );

	return $matches[1] . "<a href=\"$dest\" rel=\"$rel\">$dest</a>$ret";
}

Uses

Uses Description
wp-includes/formatting.php: make_clickable_rel

Filters the rel value that is added to URL matches converted to links.
wp-includes/formatting.php: esc_url()

Checks and cleans a URL.
wp-includes/formatting.php: esc_attr()

Escaping for HTML attributes.
wp-includes/plugin.php: current_filter()

Retrieve the name of the current filter or action.
wp-includes/plugin.php: apply_filters()

Calls the callback functions that have been added to a filter hook.

Changelog

Version Description
2.3.2 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/_make_web_ftp_clickable_cb