downloads | documentation | faq | getting help | mailing lists | licenses | wiki | reporting bugs | php.net sites | links | conferences | my php.net

search for in the

file_put_contents> <file_exists
Last updated: Fri, 14 Aug 2009

view this page in

file_get_contents

(PHP 4 >= 4.3.0, PHP 5)

file_get_contentsLit tout un fichier dans une chaîne

Description

string file_get_contents ( string $filename [, int $flags= 0 [, resource $context [, int $offset= -1 [, int $maxlen= -1 ]]]] )

Identique à la fonction file(), hormis le fait que file_get_contents() retourne le fichier filename dans une chaîne, à partir de la position offset , et jusqu'à maxlen octets. En cas d'erreur, file_get_contents() retourne FALSE.

file_get_contents() est la façon recommandée pour lire le contenu d'un fichier dans un fichier. Elle utilisera un buffer en mémoire si ce mécanisme est supporté par votre système, afin d'améliorer les performances.

Note: Si vous ouvrez une URI avec des caractères spéciaux, comme des espaces, vous devez encoder cette URI avec la fonction urlencode().

Liste de paramètres

filename

Nom du fichier à lire.

flags

Note: Pour toutes les versions antérieures à PHP 6, ce paramètre est appelé use_include_path et est du type bool. Depuis PHP 5, la constante FILE_USE_INCLUDE_PATH peut être utilisée pour déclencher la recherche dans le chemin d'inclusion.

La valeur de flags peut être n'importe quelle combinaison des drapeaux suivants (avec quelques restrictions), joints avec l'opérateur OR binaire (|).

Drapeaux disponibles
Drapeau Description
FILE_USE_INCLUDE_PATH Recherche le fichier filename dans le dossier d'inclusion. Voir include_path pour plus d'informations.
FILE_TEXT Depuis PHP 6, l'encodage par défaut pour la lecture des données est UTF-8. Vous pouvez spécifier un encodage différent en créant un contexte personnalisé ou en modifiant celui par défaut en utilisant la fonction stream_default_encoding(). Ce drapeau ne peut être utilisé avec FILE_BINARY.
FILE_BINARY Avec ce drapeau, le fichier est lu en mode binaire. C'est la configuration par défaut et ne peut être utilisé avec FILE_TEXT.

context

Une ressource de contexte valide, créée avec la fonction stream_context_create(). Si vous n'avez pas besoin d'utiliser un contexte particulier, vous pouvez ignorer ce paramètre en affectant la valeur NULL.

offset

La position à partir de laquelle on commence à lire.

maxlen

La taille maximal de données à lire.

Valeurs de retour

Retourne les données lues, ou FALSE si une erreur survient.

Exemples

Exemple #1 Lit et affiche le code HTML d'un site Web

<?php
$homepage 
file_get_contents('http://www.example.com/');
echo 
$homepage;
?>

Exemple #2 Recherche un fichier dans le include_path

<?php
// avant PHP 5
$file file_get_contents('./people.txt'true);
// depuis PHP 5
$file file_get_contents('./people.txt'FILE_USE_INCLUDE_PATH);
?>

Exemple #3 Lit une section d'un fichier

<?php
// Lit 14 caractères à partir du 20ème
$section file_get_contents('./people.txt'NULLNULL2014);
var_dump($section);
?>

L'exemple ci-dessus va afficher quelque chose de similaire à :

string(14) "lle Bjori Ro" 

Exemple #4 Utilisation des contextes de flux

<?php
// Création d'un flux
$opts = array(
  
'http'=>array(
    
'method'=>"GET",
    
'header'=>"Accept-language: en\r\n" .
              
"Cookie: foo=bar\r\n"
  
)
);

$context stream_context_create($opts);

// Accès à un fichier HTTP avec les entêtes HTTP indiqués ci-dessus
$file file_get_contents('http://www.example.com/'false$context);
?>

Historique

Version Description
6.0.0 Le paramètre use_include_path a été remplacé par le paramètre flags .
5.1.0 Ajout des paramètres offset et maxlen .
5.0.0 Ajout du support du contexte.

Notes

Note: Cette fonction gère les chaînes binaires.

Astuce

Vous pouvez utiliser une URL comme nom de fichier avec cette fonction, si le gestionnaire fopen a été activée. Voyez fopen() pour plus de détails sur la façon de spécifier le nom du fichier et Liste des protocoles supportés pour une liste des protocoles URL supportés.

Avertissement

Lorsque vous utilisez SSL, le serveur IIS de Microsoft violera le protocole en fermant la connexion sans envoyer l'indicateur close_notify. PHP le reportera en tant que "SSL: Fatal Protocol Error" quand vous arrivez à la fin des données. L'astuce est de baisser le niveau de la directive error_reporting pour ne pas inclure les alertes. À partir de PHP 4.3.7, le bogue est détecté automatiquement lors de l'ouverture du flux en utilisant https:// et supprimera cet avertissement pour vous. Si vous utilisez fsockopen() pour créer une socket ssl://, vous devez vous occuper vous-même de supprimer l'erreur.

Voir aussi



file_put_contents> <file_exists
Last updated: Fri, 14 Aug 2009
 
add a note add a note User Contributed Notes
file_get_contents
ken at wetken dot net
28-Oct-2009 01:00
On Centos 5, and maybe other Red Hat based systems, any attempt to use file_get_contents to access a URL on an http  port other than 80 (e.g. "http://www.example.com:8040/page") may fail with a permissions violation (error 13) unless the box you are running php on has its seLinux set to 'permissive' not 'enforcing' . Otherwise the request doesn't even get out of the box, i.e. the permissions violation is generated locally by seLinux.
corey at effim dot com
09-Jun-2009 09:35
In my dev environment with a relatively low-speed drive (standard SATA 7200RPM) reading a 25MB zip file in 10 times...

<?php

$data
= `cat /tmp/test.zip`;
// 1.05 seconds

$fh = fopen('/tmp/test.zip', 'r');
$data = fread($fh, filesize('/tmp/test.zip'));
fclose($fh);
// 1.31 seconds

$data = file_get_contents('/tmp/test.zip');
// 1.33 seconds

?>

However, on a 21k text file running 100 iterations...

<?php

$data
= `cat /tmp/test.txt`;
// 1.98 seconds

$fh = fopen('/tmp/test.txt', 'r');
$data = fread($fh, filesize('/tmp/test.txt'));
fclose($fh);
// 0.00082 seconds

$data = file_get_contents('/tmp/test.txt');
// 0.0069 seconds

?>

Despite the comment about file_get_contents being faster do to memory mapping, file_get_contents is slowest in both of the above examples. If you need the best performance out of your production box, you might want to throw together a script to check out which method is fastest for what size files on that particular machine, then optimize your code to check the file size and use the appropriate function for it.
colnector bla-at_bla colnect.com
10-Aug-2008 09:34
A UTF-8 issue I've encountered is that of reading a URL with a non-UTF-8 encoding that is later displayed improperly since file_get_contents() related to it as UTF-8. This small function should show you how to address this issue:

<?php
function file_get_contents_utf8($fn) {
    
$content = file_get_contents($fn);
      return
mb_convert_encoding($content, 'UTF-8',
         
mb_detect_encoding($content, 'UTF-8, ISO-8859-1', true));
}
?>
EOD
07-Aug-2008 12:34
if $filename has a relative path file_get_contents returns the uninterpreted sourcecode of the php-file with all comments etc.

I don't know whether this is a bug or intented or caused by server-configuration.

I think this behaviour should be included in the description of the function.
daniele dot ricci at staff dot dada dot net
05-Aug-2008 11:13
I recently upgraded my server to Slackware 12.0.

After this, a program of mine stopped working: the call to file_get_contents (to an URL served by a custom HTTP server) was returning false without generating any error!

After some investigations I saw this: my custom HTTP server closes the connection at the end of the content. This (without the header "Connection: close") seems to cause the problem I described.

To solve the problem I simply added that header to the answer of my custom HTTP server.
pascalxusPLEASENOSPAM at yahoo dot com
19-Jul-2008 12:17
if( false == ($str=file_get_contents( '../relative_path/test.txt' )))
    echo "Could not read file.";
  else
    echo "File contents: $str";

  # Note: if the file cannot be opened then file_get_contents will attempt to warn the following:
  # Warning: file_get_contents(filename): failed to open stream
http://www.codesplunk.com/nr/questions/php1.html
joachimb at gmail dot com
15-Apr-2008 09:38
Setting the timeout properly without messing with ini values:

<?php
$ctx
= stream_context_create(array(
   
'http' => array(
       
'timeout' => 1
       
)
    )
);
file_get_contents("http://example.com/", 0, $ctx);
?>
3n1gm4 [at] gmail [dot] com
02-Apr-2008 09:12
This is a nice and simple substitute to get_file_contents() using curl, it returns FALSE if $contents is empty.

<?php
function curl_get_file_contents($URL)
    {
       
$c = curl_init();
       
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
       
curl_setopt($c, CURLOPT_URL, $URL);
       
$contents = curl_exec($c);
       
curl_close($c);

        if (
$contents) return $contents;
            else return
FALSE;
    }
?>

Hope this help, if there is something wrong or something you don't understand let me know :)
jose dot nobile at gmail dot com
29-Jan-2008 07:29
<?PHP
//PHP 4.2.x Compatibility function
if (!function_exists('file_get_contents')) {
      function
file_get_contents($filename, $incpath = false, $resource_context = null)
      {
          if (
false === $fh = fopen($filename, 'rb', $incpath)) {
             
trigger_error('file_get_contents() failed to open stream: No such file or directory', E_USER_WARNING);
              return
false;
          }
 
         
clearstatcache();
          if (
$fsize = @filesize($filename)) {
             
$data = fread($fh, $fsize);
          } else {
             
$data = '';
              while (!
feof($fh)) {
                 
$data .= fread($fh, 8192);
              }
          }
 
         
fclose($fh);
          return
$data;
      }
  }
?>
php [spat] hm2k.org
15-Jan-2008 11:58
I decided to make a similar function to this, called file_post_contents, it uses POST instead of GET to call, kinda handy...

<?php
function file_post_contents($url,$headers=false) {
   
$url = parse_url($url);

    if (!isset(
$url['port'])) {
      if (
$url['scheme'] == 'http') { $url['port']=80; }
      elseif (
$url['scheme'] == 'https') { $url['port']=443; }
    }
   
$url['query']=isset($url['query'])?$url['query']:'';

   
$url['protocol']=$url['scheme'].'://';
   
$eol="\r\n";

   
$headers "POST ".$url['protocol'].$url['host'].$url['path']." HTTP/1.0".$eol.
               
"Host: ".$url['host'].$eol.
               
"Referer: ".$url['protocol'].$url['host'].$url['path'].$eol.
               
"Content-Type: application/x-www-form-urlencoded".$eol.
               
"Content-Length: ".strlen($url['query']).$eol.
               
$eol.$url['query'];
   
$fp = fsockopen($url['host'], $url['port'], $errno, $errstr, 30);
    if(
$fp) {
     
fputs($fp, $headers);
     
$result = '';
      while(!
feof($fp)) { $result .= fgets($fp, 128); }
     
fclose($fp);
      if (!
$headers) {
       
//removes headers
       
$pattern="/^.*\r\n\r\n/s";
       
$result=preg_replace($pattern,'',$result);
      }
      return
$result;
    }
}
?>
francois hill
03-Dec-2007 04:56
Seems file looks for the file inside the current working (executing) directory before looking in the include path, even with the FILE_USE_INCLUDE_PATH flag specified.

Same behavior as include actually.

By the way I feel the doc is not entirely clear on the exact order of inclusion (see include). It seems to say the include_path is the first location to be searched, but I have come across at least one case where the directory containing the file including was actually the first to be searched.

Drat.
bearachute at gmail dot com
11-Jul-2007 09:38
If you're having problems with binary and hex data:

I had a problem when trying to read information from a ttf, which is primarily hex data. A binary-safe file read automatically replaces byte values with their corresponding ASCII characters, so I thought that I could use the binary string when I needed readable ASCII strings, and bin2hex() when I needed hex strings.

However, this became a problem when I tried to pass those ASCII strings into other functions (namely gd functions). var_dump showed that a 5-character string contained 10 characters, but they weren't visible. A binary-to-"normal" string conversion function didn't seem to exist and I didn't want to have to convert every single character in hex using chr().

I used unpack with "c*" as the format flag to see what was going on, and found that every other character was null data (ordinal 0). To solve it, I just did

str_replace(chr(0), "", $string);

which did the trick.

This took forever to figure out so I hope this helps people reading from hex data!
tobsn at php dot net
02-May-2007 04:26
you'll find the http response headers in: $http_response_header

;o)
Greg Ambrose (greg at catalina-it dot com dot au)
17-Apr-2007 04:37
[Editors note: As of PHP 5.2.1 you can specify `timeout` context option and pass the context to file_get_contents()]

The only way I could get get_file_contents() to wait for a very slow http request was to set the socket timeout as follows.

 ini_set('default_socket_timeout',    120);   
$a = file_get_contents("http://abcxyz.com");

Other times like execution time and input time had no effect.
siegfri3d at gmail dot com
05-Dec-2006 08:52
Use the previous example if you want to request the server for a special part of the content, IF and only if the server accepts the method.
If you want a simple example to ask the server for all the content, but only save a portion of it, do it this way:
<?
$content
=file_get_contents("http://www.google.com",FALSE,NULL,0,20);
echo
$content;
?>

This will echo the 20 first bytes of the google.com source code.
fcicqbbs at gmail dot com
04-Aug-2006 08:55
the bug #36857 was fixed.
http://bugs.php.net/36857

Now you may use this code,to fetch the partial content like this:
<?php
$context
=array('http' => array ('header'=> 'Range: bytes=1024-', ),);
$xcontext = stream_context_create($context);
$str=file_get_contents("http://www.fcicq.net/wp/",FALSE,$xcontext);
?>
that's all.
richard dot quadling at bandvulc dot co dot uk
15-Nov-2005 10:47
If, like me, you are on a Microsoft network with ISA server and require NTLM authentication, certain applications will not get out of the network. SETI@Home Classic and PHP are just 2 of them.

The workaround is fairly simple.

First you need to use an NTLM Authentication Proxy Server. There is one written in Python and is available from http://apserver.sourceforge.net/. You will need Python from http://www.python.org/.

Both sites include excellent documentation.

Python works a bit like PHP. Human readable code is handled without having to produce a compiled version. You DO have the opportunity of compiling the code (from a .py file to a .pyc file).

Once compiled, I installed this as a service (instsrv and srvany - parts of the Windows Resource Kit), so when the server is turned on (not logged in), the Python based NTLM Authentication Proxy Server is running.

Then, and here is the bit I'm really interested in, you need to tell PHP you intend to route http/ftp requests through the NTLM APS.

To do this, you use contexts.

Here is an example.

<?php

// Define a context for HTTP.
$aContext = array(
   
'http' => array(
       
'proxy' => 'tcp://127.0.0.1:8080', // This needs to be the server and the port of the NTLM Authentication Proxy Server.
       
'request_fulluri' => True,
        ),
    );
$cxContext = stream_context_create($aContext);

// Now all file stream functions can use this context.

$sFile = file_get_contents("http://www.php.net", False, $cxContext);

echo
$sFile;
?>

Hopefully this helps SOMEONE!!!
aidan at php dot net
31-Jan-2005 07:23
This functionality is now implemented in the PEAR package PHP_Compat.

More information about using this function without upgrading your version of PHP can be found on the below link:

http://pear.php.net/package/PHP_Compat

file_put_contents> <file_exists
Last updated: Fri, 14 Aug 2009
 
 
show source | credits | stats | sitemap | contact | advertising | mirror sites