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WP_REST_URL_Details_Controller::get_document_head( string $html ): string

Retrieves the head element section.

Parameters

$htmlstringrequired
The string of HTML to parse.

Return

string The <head>..</head> section on success. Given $html if not found.

Source

private function get_document_head( $html ) {
	$head_html = $html;

	// Find the opening `<head>` tag.
	$head_start = strpos( $html, '<head' );
	if ( false === $head_start ) {
		// Didn't find it. Return the original HTML.
		return $html;
	}

	// Find the closing `</head>` tag.
	$head_end = strpos( $head_html, '</head>' );
	if ( false === $head_end ) {
		// Didn't find it. Find the opening `<body>` tag.
		$head_end = strpos( $head_html, '<body' );

		// Didn't find it. Return the original HTML.
		if ( false === $head_end ) {
			return $html;
		}
	}

	// Extract the HTML from opening tag to the closing tag. Then add the closing tag.
	$head_html  = substr( $head_html, $head_start, $head_end );
	$head_html .= '</head>';

	return $head_html;
}

Changelog

Version Description
5.9.0 Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_rest_url_details_controller/get_document_head