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", $contents);
}
?>
file_put_contents
(PHP 5, PHP 7)
file_put_contents — Escreve uma string para um arquivo
Descrição
Esta função é idêntica à chamar fopen(), fwrite() e fclose() sucessivamente para escrever dados em um arquivo.
Se filename não existir, o arquivo é criado.
Do contrário, o arquivo existente é sobrescrito, a não ser que
a flag FILE_APPEND seja definida.
Parâmetros
-
filename -
O caminho para o arquivo onde escrever os dados.
-
data -
Os dados a serem escritos. Pode ser uma string, um array ou um recurso stream (explicado abaixo).
Se
datafor um recurso stream, o buffer restante desse stream será copiado para o arquivo especificado, semelhante à utilização da stream_copy_to_stream().Você também pode especificar o parâmetro
datacomo um array unidimensional. Isso é equivalente afile_put_contents($filename, implode('', $array)). -
flags -
O valor de
flagspode ser qualquer combinação das seguintes flags (com algumas restrições), unidas com o operador binário OR (|).Flags disponíveis Flag Descrição FILE_USE_INCLUDE_PATHProcura o arquivo filenamenos diretórios de include. Veja include_path para mais informações.FILE_APPENDSe o arquivo filenamejá existir, acrescenta os dados ao arquivo ao invés de sobrescrevê-lo.LOCK_EXAdquire um bloqueio exclusivo enquanto estiver escrevendo. FILE_TEXTOs dados de datasão escritos em modo texto. Se a semântica unicode estiver habilitada, o encoding padrão é UTF-8. Você pode especificar um encoding diferente criando um contexto personalizado ou alterando o encoding padrão utilizando stream_default_encoding(). Esta flag não pode ser usada comFILE_BINARYe está disponível apenas a partir do PHP 6.FILE_BINARYOs dados de dataserão escritos em modo binário. Esta é a opção padrão e não pode ser utilizada comFILE_TEXT. Esta flag está disponível apenas a partir do PHP 6. -
context -
Um recurso de contexto válido criado com stream_context_create().
Valor Retornado
A função retorna a quantidade de bytes que foi escrita no arquivo ou
false em caso de falha.
Changelog
| Versão | Descrição |
|---|---|
| 5.0.0 | Adicionado suporte a contexto |
| 5.1.0 |
Adicionado suporte a LOCK_EX e a possibilidade de passar
um recurso de stream para o parâmetro data
|
| 6.0.0 |
Adicionado suporte às flags FILE_TEXT e
FILE_BINARY
|
Notas
Nota: Esta função é binary-safe.
Dica
Uma URL pode ser utilizada como um nome de arquivo se fopen wrappers estiver ativo. Veja fopen() para mais detalhes em como especificar URLs como nome de arquivo. Veja também the Protocolos e Wrappers suportados para informações sobre que capacidades cada wrapper tem, notas de uso e informações sobre variáveis predefinidas fornecidas.
Veja Também
- fopen() - Abre um arquivo ou URL
- fwrite() - Escrita binary-safe em arquivos
- file_get_contents() - Lê todo o conteúdo de um arquivo para uma string
- stream_context_create() - Creates a stream context
add a note
User Contributed Notes 36 notes
TrentTompkins at gmail dot com ¶
12 years ago
justin dot carlson at gmail dot com ¶
9 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
daniel at garcianoriega dot com ¶
2 years ago
I faced the problem of converting a downloaded csv file that had Windows-1252 encoding, so to convert it to UTF-8 this worked for me:
$from = 'Windows-1252';
$to = 'UTF-8';
$content = file_get_contents($this->path());
file_put_contents($this->path(), mb_convert_encoding($content, $to, $from));
where "$this->path()" has the path of the file... Using this the file is converted from Windows-1252 to UTF-8.
With this you can import it with mysqlimport with no problems.
deqode at felosity dot nl ¶
11 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);
?>
maksam07 at gmail dot com ¶
1 year 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, $flags );
}
file_force_contents( ROOT.'/newpath/file.txt', 'message', LOCK_EX );
?>
aidan at php dot net ¶
16 years ago
This functionality is now implemented in the PEAR package PHP_Compat.
More information about using this function without upgrading your version of PHP can be found on the below link:
http://pear.php.net/package/PHP_Compat
Anonymous ¶
4 years ago
Make sure not to corrupt anything in case of failure.
<?php
function file_put_contents_atomically($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;
}
?>
chris at ocportal dot com ¶
7 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.
error at example dot com ¶
10 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.
Brandon Lockaby ¶
9 years ago
Calling file_put_contents within a destructor will cause the file to be written in SERVER_ROOT...
vahkos at mail dot ru ¶
9 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);
egingell at sisna dot com ¶
14 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;
}
}
?>
caiofior at gmail dot com ¶
9 years ago
I had some troubles using file_put_contents with an absolute but no canonicalized path (eg. w:/htdocs/pri/../test/log.txt): on windows environment php was unable to create the file also using the realpath function .
I had to use fopen and frwite functions to write the data.
jul dot rosset at gmail dot com ¶
2 months ago
This function doesn't return False if all data isn't write, especially when data is a stream resource
You must check yourself using return value.
<?php
$url = 'https://monsite.fr/image.png';
$size = filesize($url);
$written = file_put_contents('image.png', fopen($url, 'r'));
if ($size === false || $size != $written) {
die('Download failed');
}
?>
ravianshmsr08 at gmail dot com ¶
10 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($conn_id);
?>
vaneatona at gmail dot com ¶
3 years ago
I'm updating a function that was posted, as it would fail if there was no directory. It also returns the final value so you can determine if the actual file was written.
public static function file_force_contents($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}", $contents);
}
aabaev arroba gmail coma com ¶
4 years ago
I suggest to expand file_force_contents() function of TrentTompkins at gmail dot com by adding verification if patch is like: "../foo/bar/file"
if (strpos($dir, "../") === 0)
$dir = str_replace("..", substr(__DIR__, 0, strrpos(__DIR__, "/")), $dir);
gurjindersingh at SPAM dot hotmail dot com ¶
6 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").
?>
wjsams at gmail dot com ¶
11 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 $contents you get two extra line endings, but if you view the file newfile.txt, you only get one.
Curtis ¶
14 years ago
As to the previous user note, it would be wise to include that code within a conditional statement, as to prevent re-defining file_put_contents and the FILE_APPEND constant in PHP 5:
<?php
if ( !function_exists('file_put_contents') && !defined('FILE_APPEND') ) {
...
}
?>
Also, if the file could not be accessed for writing, the function should return boolean false, not 0. An error is different from 0 bytes written, in this case.
moura dot kadu at gmail dot com ¶
9 years ago
I made a ftp_put_contents function.
hope you enjoy.
<?php
function ftp_put_contents($fpc_path_and_name, $fpc_content) {
//Temporary folder in the server
$cfg_temp_folder = str_replace("//", "/", $_SERVER['DOCUMENT_ROOT']."/_temp/");
//Link to FTP
$cfg_ftp_server = "ftp://ftp.com";
//FTP username
$cfg_user = "user";
//FTP password
$cfg_pass = "password";
//Document Root of FTP
$cfg_document_root = "DOCUMENT ROOT OF FTP";
//Link to the website
$cfg_site_link = "Link to the website";
//Check if conteins slash on the path of the file
$cotains_slash = strstr($fpc_path_and_name, "/");
//Get filename and paths
if ($cotains_slash) {
$fpc_path_and_name_array = explode("/", $fpc_path_and_name);
$fpc_file_name = end($fpc_path_and_name_array);
}
else {
$fpc_file_name = $fpc_path_and_name;
}
//Create local temp dir
if (!file_exists($cfg_temp_folder)) {
if (!mkdir($cfg_temp_folder, 0777)) {
echo "Unable to generate a temporary folder on the local server - $cfg_temp_folder.<br />";
die();
}
}
//Create local file in temp dir
if (!file_put_contents(str_replace("//", "/", $cfg_temp_folder.$fpc_file_name), $fpc_content)) {
echo "Unable to generate the file in the temporary location - ".str_replace("//", "/", $cfg_temp_folder.$fpc_file_name).".<br />";
die();
}
//Connection to the FTP Server
$fpc_ftp_conn = ftp_connect("$cfg_ftp_server");
//Check connection
if (!$fpc_ftp_conn) {
echo "Could not connect to server <b>$cfg_ftp_server</b>.<br />";
die();
}
else {
// login
// check username and password
if (!ftp_login($fpc_ftp_conn, "$cfg_user", "$cfg_pass")) {
echo "User or password.<br />";
die();
}
else {
//Document Root
if (!ftp_chdir($fpc_ftp_conn, $cfg_document_root)) {
echo "Error to set Document Root.<br />";
die();
}
//Check if there are folders to create
if ($cotains_slash) {
//Check if have folders and is not just the file name
if (count($fpc_path_and_name_array) > 1) {
//Remove last array
$fpc_remove_last_array = array_pop($fpc_path_and_name_array);
//Checks if there slashs on the path
if (substr($fpc_path_and_name,0,1) == "/") {
$fpc_remove_first_array = array_shift($fpc_path_and_name_array);
}
//Create each folder on ftp
foreach ($fpc_path_and_name_array as $fpc_ftp_path) {
if (!@ftp_chdir($fpc_ftp_conn, $fpc_ftp_path)) {
if (!ftp_mkdir($fpc_ftp_conn, $fpc_ftp_path)) {
echo "Error creating directory $fpc_ftp_path.<br />";
}
else {
if (!ftp_chdir($fpc_ftp_conn, $fpc_ftp_path)) {
echo "Error go to the directory $fpc_ftp_path.<br />";
}
}
}
}
}
else {
}
}
//Check upload file
if (!ftp_put($fpc_ftp_conn, $fpc_file_name, str_replace("//", "/", $cfg_temp_folder.$fpc_file_name), FTP_ASCII)) {
echo "File upload <b>$fpc_path_and_name</b> failed!<br />";
die();
}
else {
if (!unlink(str_replace("//", "/", $cfg_temp_folder.$fpc_file_name))) {
echo "Error deleting temporary file.<br />";
die();
}
else {
echo "File upload <a href='$cfg_site_link".str_replace("//", "/", "/$fpc_path_and_name")."'><b>$cfg_site_link".str_replace("//", "/", "/$fpc_path_and_name")."</a></b> successfully performed.<br />";
}
}
//Close connection to FTP server
ftp_close($fpc_ftp_conn);
}
}
}
#Sample
$content_file = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\">
<head>
<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />
<title>Title</title>
</head>
<body>
<p>Test</p>
</body>
</html>";
ftp_put_contents("test.php", $content_file);
?>
John Galt ¶
11 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)."\" />";
?>
kola_lola at hotmail dot com ¶
12 years ago
I wrote this script implementing the file_put_contents() and file_get_contents() functions to be compatible with both php4.* and php 5.*. It is a PHP Command line interface script which searches and replaces a specific word recursively through all files in the supplied directory hierarchy.
Usage from a Linux command line: ./scriptname specifieddirectory searchString replaceString
#!/usr/bin/php
<?php
$argc = $_SERVER['argc'];
$argv = $_SERVER['argv'];
if($argc != 4)
{
echo "This command replaces a search string with a replacement string\n for the contents of all files in a directory hierachy\n";
echo "command usage: $argv[0] directory searchString replaceString\n";
echo "\n";
exit;
}
?><?php
if (!function_exists('file_put_contents')) {
function file_put_contents($filename, $data) {
$f = @fopen($filename, 'w');
if (!$f) {
return false;
} else {
$bytes = fwrite($f, $data);
fclose($f);
return $bytes;
}
}
}
function get_file_contents($filename)
/* Returns the contents of file name passed
*/
{
if (!function_exists('file_get_contents'))
{
$fhandle = fopen($filename, "r");
$fcontents = fread($fhandle, filesize($filename));
fclose($fhandle);
}
else
{
$fcontents = file_get_contents($filename);
}
return $fcontents;
}
?><?php
function openFileSearchAndReplace($parentDirectory, $searchFor, $replaceWith)
{
//echo "debug here- line 1a\n";
//echo "$parentDirectory\n";
//echo "$searchFor\n";
//echo "$replaceWith\n";
if ($handle = opendir("$parentDirectory")) {
while (false !== ($file = readdir($handle))) {
if (($file != "." && $file != "..") && !is_dir($file)) {
chdir("$parentDirectory"); //to make sure you are always in right directory
// echo "$file\n";
$holdcontents = file_get_contents($file);
$holdcontents2 = str_replace($searchFor, $replaceWith, $holdcontents);
file_put_contents($file, $holdcontents2);
// echo "debug here- line 1\n";
// echo "$file\n";
}
if(is_dir($file) && ($file != "." && $file != ".."))
{
$holdpwd = getcwd();
//echo "holdpwd = $holdpwd \n";
$newdir = "$holdpwd"."/$file";
//echo "newdir = $newdir \n"; //for recursive call
openFileSearchAndReplace($newdir, $searchFor, $replaceWith);
//echo "debug here- line 2\n";
//echo "$file\n";
}
}
closedir($handle);
}
}
$parentDirectory2 = $argv[1];
$searchFor2 = $argv[2];
$replaceWith2 = $argv[3];
//Please do not edit below to keep the rights to this script
//Free license, if contents below this line is not edited
echo "REPLACED\n'$searchFor2' with '$replaceWith2' recursively through directory listed below\nFor all files that current user has write permissions for\nDIRECTORY: '$parentDirectory2'\n";
echo "command written by Kolapo Akande :) all rights reserved :)\n";
$holdpwd = getcwd();
//echo "$holdpwd\n";
chdir($parentDirectory2);
openFileSearchAndReplace($parentDirectory2, $searchFor2, $replaceWith2);
exit;
?>
vilhar at hotmail dot com ¶
4 years ago
This should also handle $filename from other than root and also $filename without path.
function file_force_contents($filename, $data, $per = 0755, $flags = 0) {
$fn = "";
if(substr($filename, 0, 1) === "/") $fn .= "/";
$parts = explode("/", $filename);
$file = array_pop($parts);
foreach($parts as $part) {
if(!is_dir($fn .= "$part")) mkdir($fn, $per, true);
$fn .= "/";
}
file_put_contents($fn.$file, $data, $flags);
}
briethings at gmail dot com ¶
2 years ago
Here is a stupid pitfall I just fell into.
I think it may happen rather frequently, so I report it.
A common situation is that the $filename argument is built from two variables:
file_put_contents($path . $file, $content);
Say that $path = 'path/to' and $file = 'file.txt': you see that $path lacks its ending "/", so the resulting full path is 'path/tofile.txt'.
Then you look at 'path/to' and don't see any 'file.txt', although no warning or notice was thrown!
And may be (like for me :D) it'll take time before you realize that a bad 'tofile.txt' was created in the *parent* directory of the one where you were looking for your file.
the geek man at hot mail point com ¶
13 years ago
I use the following code to create a rudimentary text editor. It's not fancy, but then it doesn't have to be. You could easily add a parameter to specify a file to edit; I have not done so to avoid the potential security headaches.
There are still obvious security holes here, but for most applications it should be reasonably safe if implemented for brief periods in a counterintuitive spot. (Nobody says you have to make a PHP file for that purpose; you can tack it on anywhere, so long as it is at the beginning of a file.)
<?php
$random1 = 'randomly_generated_string';
$random2 = 'another_randomly_generated_string';
$target_file = 'file_to_edit.php';
$this_file = 'the_current_file.php';
if ($_REQUEST[$random1] === $random2) {
if (isset($_POST['content']))
file_put_contents($target_file, get_magic_quotes_qpc() ? stripslashes($_POST['content']) : $_POST['content']);
die('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Editing...</title>
</head>
<body>
<form method="post" action="' . $this_file . '" />
<input type="hidden" name="' . $random1 . '" value="' . $random2 . '" />
<textarea name="content" rows="50" cols="100">' . file_get_contents($target_file) . '</textarea><br />
<input type="submit" value="Save Changes" />
</form>
</body>
</html>');
}
?>
Then simply browse to hxxp://www.example.com/{$this_file}?{$random1}={$random2}, with the appropriate values substituted for each bracketed variable. Please note that this code assumes the target file to be world writable (-rw-rw-rw- or 666) and will fail to save properly without error if it is not.
Once again, this is by no means secure or permanent, but as a quick fix for brief edits to noncritical files it should be sufficient, and its small size is a definite bonus.
Nadeem ¶
6 years ago
Log custom or error messages to a file.
<?php
class Logger{
protected $file;
protected $content;
protected $writeFlag;
protected $endRow;
public function __construct($file,$endRow="\n",$writeFlag=FILE_APPEND) {
$this->file=$file;
$this->writeFlag=$writeFlag;
$this->endRow=$endRow;
}
public function AddRow($content="",$newLines=1){
for ($m=0;$m<$newLines;$m++)
{
$newRow .= $this->endRow;
}
$this->content .= $content . $newRow;
}
public function Commit(){
return file_put_contents($this->file,$this->content,$this->writeFlag);
}
public function LogError($error,$newLines=1)
{
if ($error!=""){
$this->AddRow($error,$newLines);
echo $error;
}
}
}
$logFileDirectoryAndName="/yourDirectory/yourFileName.xxx";
$logger = new Logger($logFileDirectoryAndName);
$logger->AddRow("Your Log Message");
#log a system error and echo a message
$logger->LogError(mysql_error($conn));
$logger->Commit();
?>
egingell at sisna dot com ¶
13 years ago
There is a better way. www.php.net/touch
Since you're not adding anything to the file,
<?php
function updateFile($filename) {
if (!file_exists($filename)) return;
touch($filename);
}
?>
klunker dot roox at gmail dot com ¶
6 years ago
if path to the file not exist function file_put_contents can't create it. This simple function make it on UNIX-based and Windows servers.
<?php
function file_put_contents_force(){
$args = func_get_args();
$path = str_replace(array('/','\\'), DIRECTORY_SEPARATOR, $args[0]);
$parts = explode(DIRECTORY_SEPARATOR, $path);
array_pop($parts);
$directory = '';
foreach($parts as $part):
$check_path = $directory.$part;
if( is_dir($check_path.DIRECTORY_SEPARATOR) === FALSE) {
mkdir($check_path, 0755);
}
$directory = $check_path.DIRECTORY_SEPARATOR;
endforeach;
call_user_func_array('file_put_contents',$args);
}
?>
clement dot delmas at gmail dot com ¶
10 years ago
NOTE : file_put_contents doesn't add a valid BOM while creating the file
<?php
$myFile = 'test.txt';
$myContent = 'I love PHP';
file_put_contents($myFile, "\xEF\xBB\xBF".$myContent);
?>
michel kollenhoven ¶
7 years ago
re: moura dot kadu at gmail dot com
why not ? file_put_contents('ftp://user:pass@server/path/to/file',$data);
hilton at allcor dot com dot br ¶
10 years ago
NOTE : file_put_contents create files UTF-8
<?php
$myFile = 'test.txt';
$myContent = 'I love PHP';
file_put_contents($myFile, utf8_encode($myContent));
?>
Abe ¶
2 years ago
If you need to read a file, process the contents, and then write the contents back, all inside a lock so that no other process can interfere, then you probably can't use file_put_contents in lock mode.
As a work around, you can consider trying the following code to do a file write (fwrite) inside of a file lock.
Play with the $overwriting= setting to switch from simply appending to completely overwriting.
<?php
// Tested in PHP7.0.18
$trackErrors = ini_get('track_errors');
ini_set('track_errors', 1);
$filename="c:/temp/test.txt";
if ( ! file_exists($filename) ) {
touch($filename);
}
$mode="r+";
$fh=fopen($filename, $mode);
if ( ! $fh ) {
echo "<LI style='color:red'>Failed to open $filename in $mode";
die();
}
if ( 1==1 ) {
flock($fh, LOCK_EX);
if ( 1==1 ) {
if (filesize($filename) > 0) {
$txt = fread($fh, filesize($filename));
echo "BEFORE:<OL>$txt</OL>";
}
else {
$txt = "empty";
}
$txt = "<LI>Date is now " . gmdate("Y-m-d H:i:s", time());
echo "<HR>WRITING:<OL>";
if ( 1==1 ) {
$overwrite = false;
if ($overwrite) {
echo "(Overwrite)<BR><BR>";
ftruncate($fh, 0);
// ftruncate is here as rewind will move the pointer
// to the beginning of the file and allow overwrite,
// but it will not remove existing content that
// extends beyond the length of the new write
rewind($fh);
}
else {
echo "(Appending)<BR><BR>";
}
if (fwrite($fh, $txt) == FALSE) {
echo "<LI style='color:red'>Failed to write to $filename";
die();
}
else {
echo "$txt";
}
fflush($fh);
}
echo "</OL>";
}
flock($fh, LOCK_UN);
}
fclose($fh);
// -------------------------------------------------------------------
echo "<HR>AFTER:<OL>";
if ( 1==2 ) {
// I've noticed that this block fails to pick up the newly
// written content when run with fread, but does work with
// the fgets logic below - possibly there is caching going on.
$mode = "r";
$fh2 = fopen($filename, $mode);
$contents = fread($fh2, filesize($filename));
echo "$contents";
fclose($fh2);
}
else {
$fh3 = fopen($filename, "r");
while (!feof($fh3)) {
$line = fgets($fh3);
echo $line;
}
fclose($fh3);
}
echo "</OL>";
echo "<HR>Fin";
?>
marc at gutt dot it ¶
3 years ago
This php.net example could be confusing:
<?php
file_put_contents($file, $person, FILE_APPEND | LOCK_EX);
?>
You do not need LOCK_EX if you write only to a file (like log files). Multiple writing processes are already queued. Test it on your own by calling this script 4 times simultaneously:
<?php
function string_rand($len, $split="\n") {
return substr(chunk_split(bin2hex(openssl_random_pseudo_bytes(ceil($len / 2))), 1023, $split), 0, $len);
}
ini_set('memory_limit', '200M');
if (!file_put_contents('../cache4/file.txt', string_rand(102400000), FILE_APPEND)) {
exit('file_put_contents() error!');
}
clearstatcache();
echo 'filesize: ' . filesize('../cache4/file.txt') . PHP_EOL;
$fp = fopen('../cache4/file.txt', 'r');
if ($fp) {
while (($line = fgets($fp)) !== false) {
if (strlen($line) != 1024) {
exit('Line length error!');
}
}
fclose($fp);
}
?>
You will not see an error, the last called script needs the longest time (as it is the last one in the queue) and the final size will be 409600000 bytes as it should be.
josemiguel at likeik dot com ¶
4 years ago
Under PHP7.0, I have seen that using an empty string as $data, the function returns FALSE instead of 0 as it should:
$data = ''
$size = file_put_contents($filename, $data, FILE_APPEND);
if ($size == FALSE)
{
echo "error writing file"
}
Code will give error when $data is an empty string even using == operator.
Hope it helps somebody...
admin at nabito dot net ¶
12 years ago
This is example, how to save Error Array into simple log file
<?php
$error[] = 'some error';
$error[] = 'some error 2';
@file_put_contents('log.txt',date('c')."\n".implode("\n", $error),FILE_APPEND);
?>
