php 获得Favicon V3

Posted 2021-05-04

<?php
/********* LIVE DEMO: https://goo.gl/shr5Cv *********/

   echo "<h1>Get Favicon</h1>";
//$url = "https://mrmondialisation.org";
//$url = "http://stackoverflow.com/";
//$url = "http://changera.blogspot.ca/";
//$url = "http://veteranstoday.com";
//$url = "http://2012un-nouveau-paradigme.com/"; // No favicon
//$url = "http://www.stopmensonges.com/";
//$url = "http://reseauinternational.net";
//$url = "http://revision3.com/diggnation/"; // should be http://revision3.com
//$url = "https://en.blog.wordpress.com/";
$url = "https://mrmondialisation.org/favicon.ico";
   
$favicon = getFavicon($url);
echo $favicon ;
echo "<br>";
$rss_icon = "https://s14.postimg.org/5ig97nc69/feed_icon.png";
echo '<img src="' . $favicon . '" onerror="this.src=\''.$rss_icon.'\';">';

function getFavicon($image_url) {
    
    // Get base URL
    $urlData = parse_url($image_url);
    $url = $urlData[ "scheme" ] . "://" . $urlData[ "host" ];
    
    // First check if image with favicon.ico exist (It will work 8 out 10 times)
    $faviconURL = $url."/favicon.ico";
    
    $imgURL = checkImageSize($faviconURL);
    
    if ($imgURL) {
        return $imgURL;
    } else {
        //return false;
        return urlSheme($image_url);
    }
    
    //return $imgURL ;

}   

/*************************************/

echo "<br>";
   
// First check if image with .ico exist (It will work 8 out 10 times)
function checkImageSize($image_url) {

    //getimagesize($image_url); // for showing error
    
    echo "checkImageSize<br>";
    
    if ($data = @getimagesize($image_url)) {
        return $image_url;
    } else {
        //return false;
        return parseFavicon($image_url);
    }

}


function urlSheme($url) { 
    
    echo "urlSheme<br>";
    
    $urlData = parse_url($url);
    $url = $urlData[ "scheme" ] . "://" . $urlData[ "host" ];
    
    //$html = file_get_contents($url);
    $html = getContent($url);
    
    $link = parseFavicon($html);
    
    $path = $link;
    if ((substr($link, 0, 7) == 'http://') || (substr($link, 0, 8) == 'https://')) {
        // the current link is an "absolute" URL - parse it to get just the path
        $parsed = parse_url($link);
        $path = $parsed['path'];
    }
    
    if(substr($url, -1) == '/') {
        $url = substr($url, 0, -1);
    }
    
    $re = '#^(?:https?:)?//(?:[a-z0-9-]+\.)*((?:[a-z0-9-]+\.)[a-z]+)#i';
    
    // Get full URL Path
    if (preg_match($re, $path)) $url = "";

    
    $favicon = $url . $path;

    return $favicon;
			
}

function parseFavicon($html) {
    
    echo "parseFavicon<br>";
    
	// Get the 'href' attribute value in a <link rel="icon" ... />
	// Also works for IE style: <link rel="shortcut icon" href="http://www.example.com/myicon.ico" />
	// And for iOS style: <link rel="apple-touch-icon" href="somepath/image.ico">
	$matches = array();
	// Search for <link rel="icon" type="image/png" href="http://example.com/icon.png" />
	preg_match('/<link.*?rel=("|\').*icon("|\').*?href=("|\')(.*?)("|\')/i', $html, $matches);
	if (count($matches) > 4) {
		return trim($matches[4]);
	}
	// Order of attributes could be swapped around: <link type="image/png" href="http://example.com/icon.png" rel="icon" />
	preg_match('/<link.*?href=("|\')(.*?)("|\').*?rel=("|\').*icon("|\')*?/i', $html, $matches);
	if (count($matches) > 2) {
		return trim($matches[2]);
	}	
	// No match
	return null;
}

// Get HTML content
function getContent($url) { // Find RSS feed in a web page url - a litle bit slower

    echo "getContent Curl<br>";
    
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_VERBOSE, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible;)");
    curl_setopt($ch, CURLOPT_TIMEOUT,1000);
    curl_setopt($ch, CURLOPT_URL, urldecode($url));
    $content = curl_exec($ch);
  
    if( ($content = curl_exec($ch) ) === false)
    {
        $content = @file_get_contents($url);
        
        if($content === FALSE) { 
            // handle error here... 
            echo "error: file_get_contents <br>";
        }
        return $content ;
    }
    else
    {
        return $content ;
    }
			
}
   
?>