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file_put_contents

(PHP 5, PHP 7, PHP 8)

file_put_contentsÉcrit des données dans un fichier

Description

file_put_contents(
    string $filename,
    mixed $data,
    int $flags = 0,
    ?resource $context = null
): int|false

Revient à appeler les fonctions fopen(), fwrite() et fclose() successivement.

Si le fichier filename n'existe pas, il sera créé. Sinon, le fichier existant sera écrasé, si l'option FILE_APPEND n'est pas définie.

Liste de paramètres

filename

Chemin vers le fichier dans lequel on doit écrire les données.

data

Les données à écrire. Peut être soit une chaîne de caractères, un tableau ou une ressource de flux (explication plus bas).

Si data est une ressource de type stream, le buffer restant de ce flux sera copié dans le fichier spécifié. Cela revient à utiliser la fonction stream_copy_to_stream().

Vous pouvez également spécifier le paramètre data en tant qu'un tableau à une seule dimension. C'est l'équivalent à file_put_contents($filename, implode('', $array)).

flags

La valeur du paramètre flags peut être n'importe quelle combinaison des drapeaux suivants, liés par l'opérateur binaire OU (|).

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_APPEND Si le fichier filename existe déjà, cette option permet d'ajouter les données au fichier au lieu de l'écraser.
LOCK_EX Acquiert un verrou exclusif sur le fichier lors de l'opération d'écriture. En d'autre terme, un appel à la fonction flock() survient entre l'appel à la fonction fopen() et l'appel à la fonction fwrite(). Ce comportement n'est pas identique à un appel à la fonction fopen() avec le mode "x".

context

Une ressource de contexte valide créée avec la fonction stream_context_create().

Valeurs de retour

Retourne le nombre d'octets qui ont été écrits au fichier, ou false si une erreur survient.

Avertissement

Cette fonction peut retourner false, mais elle peut aussi retourner une valeur équivalent à false. Veuillez lire la section sur les booléens pour plus d'informations. Utilisez l'opérateur === pour tester la valeur de retour exacte de cette fonction.

Exemples

Exemple #1 Utilisation simple de file_put_contents

<?php
$file
= 'people.txt';
// Ouvre un fichier pour lire un contenu existant
$current = file_get_contents($file);
// Ajoute une personne
$current .= "Jean Dupond\n";
// Écrit le résultat dans le fichier
file_put_contents($file, $current);
?>

Exemple #2 Utilisation d'options pour file_put_contents

<?php
$file
= 'people.txt';
// Une nouvelle personne à ajouter
$person = "Jean Dupond\n";
// Ecrit le contenu dans le fichier, en utilisant le drapeau
// FILE_APPEND pour rajouter à la suite du fichier et
// LOCK_EX pour empêcher quiconque d'autre d'écrire dans le fichier
// en même temps
file_put_contents($file, $person, FILE_APPEND | LOCK_EX);
?>

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 activé. Voyez fopen() pour plus de détails sur la façon de spécifier le nom du fichier. Reportez-vous aux Liste des protocoles et des gestionnaires supportés pour plus d'informations sur les capacités des différents gestionnaires, les notes sur leur utilisation, ainsi que les informations sur les variables prédéfinies qu'elles fournissent.

Voir aussi

add a note

User Contributed Notes 19 notes

up
130
TrentTompkins at gmail dot com
15 years ago
File put contents fails if you try to put a file in a directory that doesn't exist. This creates the directory.

<?php
function file_force_contents($dir, $contents){
$parts = explode('/', $dir);
$file = array_pop($parts);
$dir = '';
foreach(
$parts as $part)
if(!
is_dir($dir .= "/$part")) mkdir($dir);
file_put_contents("$dir/$file", $contents);
}
?>
up
54
justin dot carlson at gmail dot com
12 years ago
It should be obvious that this should only be used if you're making one write, if you are writing multiple times to the same file you should handle it yourself with fopen and fwrite, the fclose when you are done writing.

Benchmark below:

file_put_contents() for 1,000,000 writes - average of 3 benchmarks:

real 0m3.932s
user 0m2.487s
sys 0m1.437s

fopen() fwrite() for 1,000,000 writes, fclose() - average of 3 benchmarks:

real 0m2.265s
user 0m1.819s
sys 0m0.445s
up
6
Anonymous
2 years ago
A more simplified version of the method that creates subdirectories:

function path_put_contents($filePath, $contents, $flags = 0) {

if (! is_dir($dir = implode('/', explode('/', $filePath, -1))))
mkdir($dir, 0777, true);
file_put_contents($filePath, $contents, $flags);
}
up
19
maksam07 at gmail dot com
5 years ago
A slightly simplified version of the method: http://php.net/manual/ru/function.file-put-contents.php#84180

<?php
function file_force_contents( $fullPath, $contents, $flags = 0 ){
$parts = explode( '/', $fullPath );
array_pop( $parts );
$dir = implode( '/', $parts );

if( !
is_dir( $dir ) )
mkdir( $dir, 0777, true );

file_put_contents( $fullPath, $contents, $flags );
}

file_force_contents( ROOT.'/newpath/file.txt', 'message', LOCK_EX );
?>
up
27
deqode at felosity dot nl
14 years ago
Please note that when saving using an FTP host, an additional stream context must be passed through telling PHP to overwrite the file.

<?php
/* set the FTP hostname */
$user = "test";
$pass = "myFTP";
$host = "example.com";
$file = "test.txt";
$hostname = $user . ":" . $pass . "@" . $host . "/" . $file;

/* the file content */
$content = "this is just a test.";

/* create a stream context telling PHP to overwrite the file */
$options = array('ftp' => array('overwrite' => true));
$stream = stream_context_create($options);

/* and finally, put the contents */
file_put_contents($hostname, $content, 0, $stream);
?>
up
19
chris at ocportal dot com
10 years ago
It's important to understand that LOCK_EX will not prevent reading the file unless you also explicitly acquire a read lock (shared locked) with the PHP 'flock' function.

i.e. in concurrent scenarios file_get_contents may return empty if you don't wrap it like this:

<?php
$myfile
=fopen('test.txt','rt');
flock($myfile,LOCK_SH);
$read=file_get_contents('test.txt');
fclose($myfile);
?>

If you have code that does a file_get_contents on a file, changes the string, then re-saves using file_put_contents, you better be sure to do this correctly or your file will randomly wipe itself out.
up
8
egingell at sisna dot com
17 years ago
In reply to the previous note:

If you want to emulate this function in PHP4, you need to return the bytes written as well as support for arrays, flags.

I can only figure out the FILE_APPEND flag and array support. If I could figure out "resource context" and the other flags, I would include those too.

<?

define('FILE_APPEND', 1);
function file_put_contents($n, $d, $flag = false) {
$mode = ($flag == FILE_APPEND || strtoupper($flag) == 'FILE_APPEND') ? 'a' : 'w';
$f = @fopen($n, $mode);
if ($f === false) {
return 0;
} else {
if (is_array($d)) $d = implode($d);
$bytes_written = fwrite($f, $d);
fclose($f);
return $bytes_written;
}
}

?>
up
2
aabaev arroba gmail coma com
8 years ago
I suggest to expand file_force_contents() function of TrentTompkins at gmail dot com by adding verification if patch is like: "../foo/bar/file"

if (strpos($dir, "../") === 0)
$dir = str_replace("..", substr(__DIR__, 0, strrpos(__DIR__, "/")), $dir);
up
8
Anonymous
7 years ago
Make sure not to corrupt anything in case of failure.

<?php

function file_put_contents_atomically($filename, $data, $flags = 0, $context = null) {
if (
file_put_contents($filename."~", $data, $flags, $context) === strlen($contents)) {
return
rename($filename."~",$filename,$context);
}

@
unlink($filename."~", $context);
return
FALSE;
}

?>
up
7
aidan at php dot net
20 years ago
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
up
1
vaneatona at gmail dot com
7 years ago
I'm updating a function that was posted, as it would fail if there was no directory. It also returns the final value so you can determine if the actual file was written.

public static function file_force_contents($dir, $contents){
$parts = explode('/', $dir);
$file = array_pop($parts);
$dir = '';

foreach($parts as $part) {
if (! is_dir($dir .= "{$part}/")) mkdir($dir);
}

return file_put_contents("{$dir}{$file}", $contents);
}
up
2
John Galt
14 years ago
I use file_put_contents() as a method of very simple hit counters. These are two different examples of extremely simple hit counters, put on one line of code, each.

Keep in mind that they're not all that efficient. You must have a file called counter.txt with the initial value of 0.

For a text hit counter:
<?php
$counter
= file_get_contents("counter.txt"); $counter++; file_put_contents("counter.txt", $counter); echo $counter;
?>

Or a graphic hit counter:
<?php
$counter
= file_get_contents("counter.txt"); $counter++; file_put_contents("counter.txt", $counter); for($i = 0; $i < strlen($counter); $i++) echo "<img src=\"counter/".substr($counter, $i, 1).".gif\" alt=\"".substr($counter, $i, 1)."\" />";
?>
up
2
ravianshmsr08 at gmail dot com
13 years ago
To upload file from your localhost to any FTP server.
pease note 'ftp_chdir' has been used instead of putting direct remote file path....in ftp_put ...remoth file should be only file name

<?php
$host
= '*****';
$usr = '*****';
$pwd = '**********';
$local_file = './orderXML/order200.xml';
$ftp_path = 'order200.xml';
$conn_id = ftp_connect($host, 21) or die ("Cannot connect to host");
ftp_pasv($resource, true);
ftp_login($conn_id, $usr, $pwd) or die("Cannot login");
// perform file upload
ftp_chdir($conn_id, '/public_html/abc/');
$upload = ftp_put($conn_id, $ftp_path, $local_file, FTP_ASCII);
if(
$upload) { $ftpsucc=1; } else { $ftpsucc=0; }
// check upload status:
print (!$upload) ? 'Cannot upload' : 'Upload complete';
print
"\n";
// close the FTP stream
ftp_close($conn_id);
?>
up
3
Brandon Lockaby
12 years ago
Calling file_put_contents within a destructor will cause the file to be written in SERVER_ROOT...
up
2
wjsams at gmail dot com
14 years ago
file_put_contents() strips the last line ending

If you really want an extra line ending at the end of a file when writing with file_put_contents(), you must append an extra PHP_EOL to the end of the line as follows.

<?php
$a_str
= array("these","are","new","lines");
$contents = implode(PHP_EOL, $a_str);
$contents .= PHP_EOL . PHP_EOL;
file_put_contents("newfile.txt", $contents);
print(
"|$contents|");
?>

You can see that when you print $contents you get two extra line endings, but if you view the file newfile.txt, you only get one.
up
1
gurjindersingh at SPAM dot hotmail dot com
9 years ago
File put contents fails if you try to put a file in a directory that doesn't exist. This function creates the directory.

i have updated code of "TrentTompkins at gmail dot com". thanks
<?php
/**
* @param string $filename <p>file name including folder.
* example :: /path/to/file/filename.ext or filename.ext</p>
* @param string $data <p> The data to write.
* </p>
* @param int $flags same flags used for file_put_contents.
* more info: http://php.net/manual/en/function.file-put-contents.php
* @return bool <b>TRUE</b> file created succesfully <br> <b>FALSE</b> failed to create file.
*/
function file_force_contents($filename, $data, $flags = 0){
if(!
is_dir(dirname($filename)))
mkdir(dirname($filename).'/', 0777, TRUE);
return
file_put_contents($filename, $data,$flags);
}
// usage

file_force_contents('test1.txt','test1 content'); // test1.txt created

file_force_contents('test2/test2.txt','test2 content');
// test2/test2.txt created "test2" folder.

file_force_contents('~/test3/test3.txt','test3 content');
// /path/to/user/directory/test3/test3.txt created "test3" folder in user directory (check on linux "ll ~/ | grep test3").
?>
up
-1
curda222 at gmail dot com
5 months ago
An improved and enraptured code from TrentTompkins at gmail dot com

Note: Added error response
Note: Added directory detection
Note: Added root detection
Note: Added permissions when creating folder

function file_force_contents($dir, $contents, $flags = 0){
if (strpos($dir, "../") === 0){
$dir = str_replace("..", substr(__DIR__, 0, strrpos(__DIR__, "/")), $dir);
}
$parts = explode('/', $dir);
if(is_array($parts)){
$file = array_pop($parts);
$dir = '';
foreach($parts as $part)
if(!is_dir($dir .= "/$part")){
mkdir($dir, 0777, true);
}
if(file_put_contents("$dir/$file", $contents, $flags) === false ){
return false;
}
}else{
if(file_put_contents("$dir", $contents, $flags) === false ){
return false;
}
}
}

-Oliver Leuyim Angel
up
1
vahkos at mail dot ru
12 years ago
file_put_contents does not issue an error message if file name is incorrect(for example has improper symbols on the end of it /n,/t)
that is why use trim() for file name.
$name=trim($name);
file_put_contents($name,$content);
up
1
error at example dot com
13 years ago
It's worth noting that you must make sure to use the correct path when working with this function. I was using it to help with logging in an error handler and sometimes it would work - while other times it wouldn't. In the end it was because sometimes it was called from different paths resulting in a failure to write to the log file.

__DIR__ is your friend.
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