file_get_contents
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", $error),FILE_APPEND);
?>
file_put_contents
(PHP 5)
file_put_contents — Escreve uma string para um arquivo
Descrição
Esta função é idêntica à chamar fopen(), fwrite() e fclose() sucessivamente para escrever dados em um arquivo.
Se filename não existir, o arquivo é criado. Do contrário, o arquivo existente é sobrescrito, a não ser que a flag FILE_APPEND seja definida.
Parâmetros
- filename
-
O caminho para o arquivo onde escrever os dados.
- data
-
Os dados a serem escritos. Pode ser uma string, um array ou um recurso stream (explicado abaixo).
Se data for um recurso stream, o buffer restante desse stream será copiado para o arquivo especificado, semelhante à utilização da stream_copy_to_stream().
Você também pode especificar o parâmetro data como um array unidimensional. Isso é equivalente a file_put_contents($filename, implode('', $array)).
- flags
-
O valor de flags pode ser qualquer combinação das seguintes flags (com algumas restrições), unidas com o operador binário OR (|).
Flags disponíveis Flag Descrição FILE_USE_INCLUDE_PATH Procura o arquivo filename nos diretórios de include. Veja include_path para mais informações. FILE_APPEND Se o arquivo filename já existir, acrescenta os dados ao arquivo ao invés de sobrescrevê-lo. LOCK_EX Adquire um bloqueio exclusivo enquanto estiver escrevendo. FILE_TEXT Os dados de data são 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 com FILE_BINARY e está disponível apenas a partir do PHP 6. FILE_BINARY Os dados de data serão escritos em modo binário. Esta é a opção padrão e não pode ser utilizada com FILE_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.
Histórico
| 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 compatível com dados binários
Dica
Você pode usar uma URL como um nome de arquivo nesta função se fopen wrappers estiver habilitado. Veja fopen() para mais detalhes em como especificar o nome do arquivo e List of Supported Protocols/Wrappers para uma lista de protocolos URL suportados.
add a note
User Contributed Notesfile_put_contents
admin at nabito dot net
04-Aug-2008 10:11
04-Aug-2008 10:11
TrentTompkins at gmail dot com
02-Jul-2008 02:25
02-Jul-2008 02:25
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", $contents);
}
?>
Anonymous
02-May-2008 08:06
02-May-2008 08:06
file_put_contents() will cause concurrency problems - that is, it doesn't write files atomically (in a single operation), which sometimes means that one php script will be able to, for example, read a file before another script is done writing that file completely.
The following function was derived from a function in Smarty (http://smarty.php.net) which uses rename() to replace the file - rename() is atomic on Linux.
On Windows, rename() is not currently atomic, but should be in the next release. Until then, this function, if used on Windows, will fall back on unlink() and rename(), which is still not atomic...
<?php
define("FILE_PUT_CONTENTS_ATOMIC_TEMP", dirname(__FILE__)."/cache");
define("FILE_PUT_CONTENTS_ATOMIC_MODE", 0777);
function file_put_contents_atomic($filename, $content) {
$temp = tempnam(FILE_PUT_CONTENTS_ATOMIC_TEMP, 'temp');
if (!($f = @fopen($temp, 'wb'))) {
$temp = FILE_PUT_CONTENTS_ATOMIC_TEMP . DIRECTORY_SEPARATOR . uniqid('temp');
if (!($f = @fopen($temp, 'wb'))) {
trigger_error("file_put_contents_atomic() : error writing temporary file '$temp'", E_USER_WARNING);
return false;
}
}
fwrite($f, $content);
fclose($f);
if (!@rename($temp, $filename)) {
@unlink($filename);
@rename($temp, $filename);
}
@chmod($filename, FILE_PUT_CONTENTS_ATOMIC_MODE);
return true;
}
?>
the geek man at hot mail point com
03-Jan-2008 12:23
03-Jan-2008 12:23
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}={$random2}, with the appropriate values substituted for each bracketed variable. Please note that this code assumes the target file to be world writable (-rw-rw-rw- or 666) and will fail to save properly without error if it is not.
Once again, this is by no means secure or permanent, but as a quick fix for brief edits to noncritical files it should be sufficient, and its small size is a definite bonus.
egingell at sisna dot com
21-Dec-2007 04:15
21-Dec-2007 04:15
There is a better way. www.php.net/touch
Since you're not adding anything to the file,
<?php
function updateFile($filename) {
if (!file_exists($filename)) return;
touch($filename);
}
?>
me at briandichiara dot com
04-Oct-2007 09:20
04-Oct-2007 09:20
I was in need of a function that updated the last modified date in a php file. There may be a better way, but this is how I did it:
<?php
function updateFile($modFile){
if(!empty($modFile)){
if($fo = fopen($modFile, 'r')){
$source = '';
while (!feof($fo)) {
$source .= fgets($fo);
}
file_put_contents($modFile,$source);
fclose($fo);
}
}
}
?>
Curtis
21-Dec-2006 12:20
21-Dec-2006 12:20
As to the previous user note, it would be wise to include that code within a conditional statement, as to prevent re-defining file_put_contents and the FILE_APPEND constant in PHP 5:
<?php
if ( !function_exists('file_put_contents') && !defined('FILE_APPEND') ) {
...
}
?>
Also, if the file could not be accessed for writing, the function should return boolean false, not 0. An error is different from 0 bytes written, in this case.
egingell at sisna dot com
23-Jul-2006 01:11
23-Jul-2006 01:11
In reply to the previous note:
If you want to emulate this function in PHP4, you need to return the bytes written as well as support for arrays, flags.
I can only figure out the FILE_APPEND flag and array support. If I could figure out "resource context" and the other flags, I would include those too.
<?
define('FILE_APPEND', 1);
function file_put_contents($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;
}
}
?>
sendoshin at awswan dot com
06-Mar-2006 08:01
06-Mar-2006 08:01
To clear up what was said by pvenegas+php at gmail dot com on 11-Oct-2005 08:13, file_put_contents() will replace the file by default. Here's the complete set of rules this function follows when accessing a file:
1. Was FILE_USE_INCUDE_PATH passed in the call? If so, check the include path for an existing copy of *filename*.
2. Does the file already exist? If not, first create it in the current working directory. Either way, open the file.
3. Was LOCK_EX passed in the call? If so, lock the file.
4. Was the function called with FILE_APPEND? If not, clear the file's contents. Otherwise, move to the end of the file.
5. Write *data* into the file.
6. Close the file and release any locks.
If you don't want to completely replace the contents of the file you're writing to, be sure to use FILE_APPEND (same as fopen() with 'a') in the *flags*. If you don't, whatever used to be there will be gone (fopen() with 'w').
Hope that helps someone (and that it makes sense ^^)!
- Sendoshin
aidan at php dot net
21-May-2004 04:11
21-May-2004 04:11
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