get_tag_regex( string $tag )

Return RegEx body to liberally match an opening HTML tag.

Description

Matches an opening HTML tag that:

  1. Is self-closing or
  2. Has no body but has a closing tag of the same name or
  3. Contains a body and a closing tag of the same name

Note: this RegEx does not balance inner tags and does not attempt to produce valid HTML

Parameters

$tag

(Required) An HTML tag name. Example: 'video'.

Return

(string) Tag RegEx.

Source

File: wp-includes/functions.php 

function get_tag_regex( $tag ) {
	if ( empty( $tag ) )
		return;
	return sprintf( '<%1$s[^<]*(?:>[\s\S]*<\/%1$s>|\s*\/>)', tag_escape( $tag ) );
}

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Related

Uses

Uses
Uses Description
wp-includes/formatting.php: tag_escape()

Escape an HTML tag name.

Changelog

Changelog
Version Description
WP-3.6.0 Introduced.