Online PHP editor | output for aaDc9

@ 2021-05-27T13:50:15Z

<?php

function get_icon( $html, $url ) {
	// Grab the icon's link element.
	$pattern = '#<link\s[^>]*rel=(?:[\"\']??)\s*(?:icon|shortcut icon|icon shortcut)\s*(?:[\"\']??)[^>]*\/?>#isU';
	preg_match( $pattern, $html, $element );
	$element = ! empty( $element[0] ) && is_string( $element[0] ) ? trim( $element[0] ) : '';
	if ( empty( $element ) ) {
		return '';
	}

	// Get the icon's href value.
	$pattern = '#href=([\"\']??)([^\" >]*?)\\1[^>]*#isU';
	preg_match( $pattern, $element, $icon );
	$icon = ! empty( $icon[2] ) && is_string( $icon[2] ) ? trim( $icon[2] ) : '';
	if ( empty( $icon ) ) {
		return '';
	}

	// If the icon is a data URL, return it.
	$parsed_icon = parse_url( $icon );
	var_dump( $parsed_icon );	
	if ( 'data' === $parsed_icon['scheme'] ) {
		return $icon;
	}

	// Attempt to convert relative URLs to absolute.
	$parsed_url = parse_url( $url );
	$root_url   = $parsed_url['scheme'] . '://' . $parsed_url['host'] . '/';
	$icon       = WP_Http::make_absolute_url( $icon, $root_url );

	return $icon;
}

$html = array(
'<link href="data:image/png;base64,iVBORw0KGgo=" rel="icon" type="image/png" />',
'<link rel="icon" href="data:image/x-icon;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQEAYAAABPYyMiAAAABmJLR0T///////8JWPfcAAAACXBIWXMAAABIAAAASABGyWs+AAAAF0lEQVRIx2NgGAWjYBSMglEwCkbBSAcACBAAAeaR9cIAAAAASUVORK5CYII=" type="image/x-icon" />',
);


foreach ( $html as $icon_html ) {
    $icon = get_icon( $icon_html, '' );
    var_dump( $icon );
}

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.26, 8.4.1 - 8.4.13: array(2) { ["scheme"]=> string(4) "data" ["path"]=> string(29) "image/png;base64,iVBORw0KGgo=" } string(34) "data:image/png;base64,iVBORw0KGgo=" array(2) { ["scheme"]=> string(4) "data" ["path"]=> string(180) "image/x-icon;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQEAYAAABPYyMiAAAABmJLR0T///////8JWPfcAAAACXBIWXMAAABIAAAASABGyWs+AAAAF0lEQVRIx2NgGAWjYBSMglEwCkbBSAcACBAAAeaR9cIAAAAASUVORK5CYII=" } string(185) "data:image/x-icon;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQEAYAAABPYyMiAAAABmJLR0T///////8JWPfcAAAACXBIWXMAAABIAAAASABGyWs+AAAAF0lEQVRIx2NgGAWjYBSMglEwCkbBSAcACBAAAeaR9cIAAAAASUVORK5CYII="
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(2) { ["scheme"]=> string(4) "data" ["path"]=> string(29) "image/png;base64,iVBORw0KGgo=" } string(34) "data:image/png;base64,iVBORw0KGgo=" array(2) { ["scheme"]=> string(4) "data" ["path"]=> string(180) "image/x-icon;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQEAYAAABPYyMiAAAABmJLR0T///////8JWPfcAAAACXBIWXMAAABIAAAASABGyWs+AAAAF0lEQVRIx2NgGAWjYBSMglEwCkbBSAcACBAAAeaR9cIAAAAASUVORK5CYII=" } string(185) "data:image/x-icon;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQEAYAAABPYyMiAAAABmJLR0T///////8JWPfcAAAACXBIWXMAAABIAAAASABGyWs+AAAAF0lEQVRIx2NgGAWjYBSMglEwCkbBSAcACBAAAeaR9cIAAAAASUVORK5CYII="

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