How to get a website's favicon with PHP?

后端未结

关注

 13  1040

I want to get, requested website\'s favicon with PHP. I have been recommended using Google\'s favicon service but it is not functional. I want to do something on my own but

相关标签:

13条回答

情歌与酒

2020-12-02 16:42

See this answer : https://stackoverflow.com/a/22771267. It's an easy to use PHP class to get the favicon URL and download it, and it also gives you some informations about the favicon like file type or how the favicon was found (default URL, <link> tag...) :

<?php
require 'FaviconDownloader.class.php';
$favicon = new FaviconDownloader('https://code.google.com/p/chromium/issues/detail?id=236848');

if($favicon->icoExists){
    echo "Favicon found : ".$favicon->icoUrl."\n";

    // Saving favicon to file
    $filename = 'favicon-'.time().'.'.$favicon->icoType;
    file_put_contents($filename, $favicon->icoData);
    echo "Saved to ".$filename."\n\n";
} else {
    echo "No favicon for ".$favicon->url."\n\n";
}

$favicon->debug();
/*
FaviconDownloader Object
(
    [url] => https://code.google.com/p/chromium/issues/detail?id=236848
    [pageUrl] => https://code.google.com/p/chromium/issues/detail?id=236848
    [siteUrl] => https://code.google.com/
    [icoUrl] => https://ssl.gstatic.com/codesite/ph/images/phosting.ico
    [icoType] => ico
    [findMethod] => head absolue_full
    [error] => 
    [icoExists] => 1
    [icoMd5] => a6cd47e00e3acbffffd2e8a760dfe64cdc
)
*/
?>

0 讨论(0)

说谎

2020-12-02 16:46

Quick and dirty:

<?php 
$url = 'http://example.com/';
$doc = new DOMDocument();
$doc->strictErrorChecking = FALSE;
$doc->loadHTML(file_get_contents($url));
$xml = simplexml_import_dom($doc);
$arr = $xml->xpath('//link[@rel="shortcut icon"]');
echo $arr[0]['href'];

0 讨论(0)

误落风尘

2020-12-02 16:47

First Method in which we can search it from fevicon.ico if found than it will show it up else not

<?php
        $userPath=$_POST["url"];
        $path="http://www.".$userPath."/favicon.ico";
        $header=  get_headers($path);
        if(preg_match("|200|", $header[0]))
        {
            echo '<img src="'.$path.'">';
        }
        else
        {
            echo "<span class=error>Not found</span>";
        }
    ?>

In other method you can search for icon and get that icon file

    <?php
$website=$_POST["url"];
$fevicon= getFavicon($website);
echo '<img src="http://www.'.$website.'/'.$fevicon.'">';
function getFavicon($site)
{
            $html=file_get_contents("http://www.".$site);
            $dom=new DOMDocument();
            @$dom->loadHTML($html);
            $links=$dom->getElementsByTagName('link');
            $fevicon='';

            for($i=0;$i < $links->length;$i++ )
            {
                $link=$links->item($i);
                if($link->getAttribute('rel')=='icon'||$link->getAttribute('rel')=="Shortcut Icon"||$link->getAttribute('rel')=="shortcut icon")
                {
                    $fevicon=$link->getAttribute('href');
                }
            }
            return  $fevicon;
}
?>

0 讨论(0)

太阳男子

2020-12-02 16:48

$url = 'http://thamaraiselvam.strikingly.com/';
$doc = new DOMDocument();
$doc->strictErrorChecking = FALSE;
@$doc->loadHTML(file_get_contents($url));
$xml = simplexml_import_dom($doc);
$arr = $xml->xpath('//link[@rel="shortcut icon"]');
if (!empty($arr[0]['href'])) {
    echo "<img src=".$arr[0]['href'].">";
 }
else 
echo "<img src='".$url."/favicon.ico'>";

0 讨论(0)

慢半拍i

2020-12-02 16:49

I changed a bit Vivek second method and added a this function and it looks like this:

<?php
        $website=$_GET['u'];
        $fevicon= getFavicon($website);
        echo '<img src="'.path_to_absolute($fevicon,$website).'"></img>';

            function getFavicon($site)
            {
            $html=file_get_contents($site);
            $dom=new DOMDocument();
            @$dom->loadHTML($html);
            $links=$dom->getElementsByTagName('link');
            $fevicon='';

            for($i=0;$i < $links->length;$i++ )
            {
                $link=$links->item($i);
                if($link->getAttribute('rel')=='icon'||$link->getAttribute('rel')=="Shortcut Icon"||$link->getAttribute('rel')=="shortcut icon")
                {
                    $fevicon=$link->getAttribute('href');
                }
            }
            return  $fevicon;
            }

    // transform to absolute path function... 
    function path_to_absolute($rel, $base)
    {
    /* return if already absolute URL */
    if (parse_url($rel, PHP_URL_SCHEME) != '') return $rel;
    /* queries and anchors */
    if ($rel[0]=='#' || $rel[0]=='?') return $base.$rel;
    /* parse base URL and convert to local variables:
       $scheme, $host, $path */
    extract(parse_url($base));
    /* remove non-directory element from path */
    $path = preg_replace('#/[^/]*$#', '', $path);
    /* destroy path if relative url points to root */
    if ($rel[0] == '/') $path = '';
    /* dirty absolute URL */
    $abs = "$host$path/$rel";
    /* replace '//' or '/./' or '/foo/../' with '/' */
    $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
    for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}
    /* absolute URL is ready! */
    return $scheme.'://'.$abs;
    }

?>

Of course you call it with https://www.domain.tld/favicon/this_script.php?u=http://www.example.com Still can't catch all options but now absolute path is resolved. Hope it helps.

0 讨论(0)

清酒与你

2020-12-02 16:53

PHP Grab Favicon

This is a comfortable way with many parameter to get the favicon from a page URL.

How it Works

Check if the favicon already exists local or no save is wished, if so return path & filename
Else load URL and try to match the favicon location with regex
If we have a match the favicon link will be made absolute
If we have no favicon we try to get one in domain root
If there is still no favicon we randomly try google, faviconkit & favicongrabber API
If favicon should be saved try to load the favicon URL
If wished save the Favicon for the next time and return the path & filename

So it combine both ways: Try to get the Favicon from the Page and if that don't work use an "API" Service that give back the Favicon ;-)

<?php
/*

PHP Grab Favicon
================

> This `PHP Favicon Grabber` use a given url, save a copy (if wished) and return the image path.

How it Works
------------

1. Check if the favicon already exists local or no save is wished, if so return path & filename
2. Else load URL and try to match the favicon location with regex
3. If we have a match the favicon link will be made absolute
4. If we have no favicon we try to get one in domain root
5. If there is still no favicon we randomly try google, faviconkit & favicongrabber API
6. If favicon should be saved try to load the favicon URL
7. If wished save the Favicon for the next time and return the path & filename

How to Use
----------

```PHP
$url = 'example.com';

$grap_favicon = array(
'URL' => $url,   // URL of the Page we like to get the Favicon from
'SAVE'=> true,   // Save Favicon copy local (true) or return only favicon url (false)
'DIR' => './',   // Local Dir the copy of the Favicon should be saved
'TRY' => true,   // Try to get the Favicon frome the page (true) or only use the APIs (false)
'DEV' => null,   // Give all Debug-Messages ('debug') or only make the work (null)
);

echo '<img src="'.grap_favicon($grap_favicon).'">';
```

Todo
----
Optional split the download dir into several sub-dirs (MD5 segment of filename e.g. /af/cd/example.com.png) if there are a lot of favicons.

Infos about Favicon
-------------------
https://github.com/audreyr/favicon-cheat-sheet

###### Copyright 2019 Igor Gaffling

*/ 

$testURLs = array(
  'http://aws.amazon.com',
  'http://www.apple.com',
  'http://www.dribbble.com',
  'http://www.github.com',
  'http://www.intercom.com',
  'http://www.indiehackers.com',
  'http://www.medium.com',
  'http://www.mailchimp.com',
  'http://www.netflix.com',
  'http://www.producthunt.com',
  'http://www.reddit.com',
  'http://www.slack.com',
  'http://www.soundcloud.com',
  'http://www.stackoverflow.com',
  'http://www.techcrunch.com',
  'http://www.trello.com',
  'http://www.vimeo.com',
  'https://www.whatsapp.com/',
  'https://www.gaffling.com/',
);

foreach ($testURLs as $url) {
  $grap_favicon = array(
    'URL' => $url,   // URL of the Page we like to get the Favicon from
    'SAVE'=> true,   // Save Favicon copy local (true) or return only favicon url (false)
    'DIR' => './',   // Local Dir the copy of the Favicon should be saved
    'TRY' => true,   // Try to get the Favicon frome the page (true) or only use the APIs (false)
    'DEV' => null,   // Give all Debug-Messages ('debug') or only make the work (null)
  );
  $favicons[] = grap_favicon($grap_favicon);
}
foreach ($favicons as $favicon) {
  echo '<img title="'.$favicon.'" style="width:32px;padding-right:32px;" src="'.$favicon.'">';
}
echo '<br><br><tt>Runtime: '.round((microtime(true)-$_SERVER["REQUEST_TIME_FLOAT"]),2).' Sec.';

function grap_favicon( $options=array() ) {

  // Ini Vars
  $url       = (isset($options['URL']))?$options['URL']:'gaffling.com';
  $save      = (isset($options['SAVE']))?$options['SAVE']:true;
  $directory = (isset($options['DIR']))?$options['DIR']:'./';
  $trySelf   = (isset($options['TRY']))?$options['TRY']:true;
  $DEBUG     = (isset($options['DEV']))?$options['DEV']:null;

  // URL to lower case
    $url = strtolower($url);

    // Get the Domain from the URL
  $domain = parse_url($url, PHP_URL_HOST);

  // Check Domain
  $domainParts = explode('.', $domain);
  if(count($domainParts) == 3 and $domainParts[0]!='www') {
    // With Subdomain (if not www)
    $domain = $domainParts[0].'.'.
              $domainParts[count($domainParts)-2].'.'.$domainParts[count($domainParts)-1];
  } else if (count($domainParts) >= 2) {
    // Without Subdomain
        $domain = $domainParts[count($domainParts)-2].'.'.$domainParts[count($domainParts)-1];
    } else {
      // Without http(s)
      $domain = $url;
    }

    // FOR DEBUG ONLY
    if($DEBUG=='debug')print('<b style="color:red;">Domain</b> #'.@$domain.'#<br>');

    // Make Path & Filename
    $filePath = preg_replace('#\/\/#', '/', $directory.'/'.$domain.'.png');

    // If Favicon not already exists local
  if ( !file_exists($filePath) or @filesize($filePath)==0 ) {

    // If $trySelf == TRUE ONLY USE APIs
    if ( isset($trySelf) and $trySelf == TRUE ) {  

      // Load Page
      $html = load($url, $DEBUG);

      // Find Favicon with RegEx
      $regExPattern = '/((<link[^>]+rel=.(icon|shortcut icon|alternate icon)[^>]+>))/i';
      if ( @preg_match($regExPattern, $html, $matchTag) ) {
        $regExPattern = '/href=(\'|\")(.*?)\1/i';
        if ( isset($matchTag[1]) and @preg_match($regExPattern, $matchTag[1], $matchUrl)) {
          if ( isset($matchUrl[2]) ) {
            
            // Build Favicon Link
            $favicon = rel2abs(trim($matchUrl[2]), 'http://'.$domain.'/');
            
            // FOR DEBUG ONLY
            if($DEBUG=='debug')print('<b style="color:red;">Match</b> #'.@$favicon.'#<br>');

          }
        }
      }
      
      // If there is no Match: Try if there is a Favicon in the Root of the Domain
        if ( empty($favicon) ) { 
        $favicon = 'http://'.$domain.'/favicon.ico';

        // Try to Load Favicon
        if ( !@getimagesize($favicon) ) {
          unset($favicon);
        }
        }

    } // END If $trySelf == TRUE ONLY USE APIs
        
    // If nothink works: Get the Favicon from API
    if ( !isset($favicon) or empty($favicon) ) {

      // Select API by Random
      $random = rand(1,3);

      // Faviconkit API
      if ($random == 1 or empty($favicon)) {
        $favicon = 'https://api.faviconkit.com/'.$domain.'/16';
      }

      // Favicongrabber API
      if ($random == 2 or empty($favicon)) {
        $echo = json_decode(load('http://favicongrabber.com/api/grab/'.$domain,FALSE),TRUE);
        
        // Get Favicon URL from Array out of json data (@ if something went wrong)
        $favicon = @$echo['icons']['0']['src'];

      }

      // Google API (check also md5() later)
      if ($random == 3) {
        $favicon = 'http://www.google.com/s2/favicons?domain='.$domain;
      } 
      
      // FOR DEBUG ONLY
      if($DEBUG=='debug')print('<b style="color:red;">'.$random.'. API</b> #'.@$favicon.'#<br>');

    } // END If nothink works: Get the Favicon from API

    // Write Favicon local
    $filePath = preg_replace('#\/\/#', '/', $directory.'/'.$domain.'.png');

    // If Favicon should be saved
    if ( isset($save) and $save == TRUE ) {
      
      //  Load Favicon
      $content = load($favicon, $DEBUG);

      // If Google API don't know and deliver a default Favicon (World)
      if ( isset($random) and $random == 3 and 
           md5($content) == '3ca64f83fdcf25135d87e08af65e68c9' ) {
        $domain = 'default'; // so we don't save a default icon for every domain again

        // FOR DEBUG ONLY
        if($DEBUG=='debug')print('<b style="color:red;">Google</b> #use default icon#<br>');
        
      }

      // Write 
      $fh = @fopen($filePath, 'wb');
      fwrite($fh, $content);
      fclose($fh);

      // FOR DEBUG ONLY
        if($DEBUG=='debug')print('<b style="color:red;">Write-File</b> #'.@$filePath.'#<br>');

    } else {
      
      // Don't save Favicon local, only return Favicon URL
      $filePath = $favicon;
    }

    } // END If Favicon not already exists local

    // FOR DEBUG ONLY
    if ($DEBUG=='debug') {

    // Load the Favicon from local file
      if ( !function_exists('file_get_contents') ) {
      $fh = @fopen($filePath, 'r');
      while (!feof($fh)) {
        $content .= fread($fh, 128); // Because filesize() will not work on URLS?
      }
      fclose($fh);
    } else {
      $content = file_get_contents($filePath);
    }
      print('<b style="color:red;">Image</b> <img style="width:32px;" 
             src="data:image/png;base64,'.base64_encode($content).'"><hr size="1">');
  }

  // Return Favicon Url
  return $filePath;

} // END MAIN Function

/* HELPER load use curl or file_get_contents (both with user_agent) and fopen/fread as fallback */
function load($url, $DEBUG) {
  if ( function_exists('curl_version') ) {
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_USERAGENT, 'FaviconBot/1.0 (+http://'.$_SERVER['SERVER_NAME'].'/');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    $content = curl_exec($ch);
    if ( $DEBUG=='debug' ) { // FOR DEBUG ONLY
      $http_code = curl_getinfo($ch);
      print('<b style="color:red;">cURL</b> #'.$http_code['http_code'].'#<br>');
    }
    curl_close($ch);
    unset($ch);
  } else {
    $context = array ( 'http' => array (
        'user_agent' => 'FaviconBot/1.0 (+http://'.$_SERVER['SERVER_NAME'].'/)'),
    );
    $context = stream_context_create($context);
      if ( !function_exists('file_get_contents') ) {
      $fh = fopen($url, 'r', FALSE, $context);
      $content = '';
      while (!feof($fh)) {
        $content .= fread($fh, 128); // Because filesize() will not work on URLS?
      }
      fclose($fh);
    } else {
      $content = file_get_contents($url, NULL, $context);
    }
  }
  return $content;
}

/* HELPER: Change URL from relative to absolute */
function rel2abs( $rel, $base ) {
    extract( parse_url( $base ) );
    if ( strpos( $rel,"//" ) === 0 ) return $scheme . ':' . $rel;
    if ( parse_url( $rel, PHP_URL_SCHEME ) != '' ) return $rel;
    if ( $rel[0] == '#' or $rel[0] == '?' ) return $base . $rel;
    $path = preg_replace( '#/[^/]*$#', '', $path);
    if ( $rel[0] ==  '/' ) $path = '';
    $abs = $host . $path . "/" . $rel;
    $abs = preg_replace( "/(\/\.?\/)/", "/", $abs);
    $abs = preg_replace( "/\/(?!\.\.)[^\/]+\/\.\.\//", "/", $abs);
    return $scheme . '://' . $abs;
}

Source: https://github.com/gaffling/PHP-Grab-Favicon

0 讨论(0)