Delicious Bookmark this on Delicious Share on Facebook SlashdotSlashdot It! Digg! Digg



PHP : Function Reference : Filesystem Functions : file_get_contents

file_get_contents

Reads entire file into a string (PHP 4 >= 4.3.0, PHP 5)
string file_get_contents ( string filename [, int flags [, resource context [, int offset [, int maxlen]]]] )

This function is similar to file(), except that file_get_contents() returns the file in a string, starting at the specified offset up to maxlen bytes. On failure, file_get_contents() will return FALSE.

file_get_contents() is the preferred way to read the contents of a file into a string. It will use memory mapping techniques if supported by your OS to enhance performance.

Note:

If you're opening a URI with special characters, such as spaces, you need to encode the URI with urlencode().

Parameters

filename

Name of the file to read.

flags
Warning:

For all versions prior to PHP 6, this parameter is called use_include_path and is a bool. The flags parameter is only available since PHP 6. If you use an older version and want to search for filename in the include path, this parameter must be TRUE. Since PHP 6, you have to use the FILE_USE_INCLUDE_PATH flag instead.

The value of flags can be any combination of the following flags (with some restrictions), joined with the binary OR (|) operator.

Table91.Available flags

Flag Description
FILE_USE_INCLUDE_PATH Search for filename in the include directory. See include_path for more information.
FILE_TEXT If unicode semantics are enabled, the default encoding of the read data is UTF-8. You can specify a different encoding by creating a custom context or by changing the default using stream_default_encoding(). This flag cannot be used with FILE_BINARY.
FILE_BINARY With this flag, the file is read in binary mode. This is the default setting and cannot be used with FILE_TEXT.


context

A valid context resource created with stream_context_create(). If you don't need to use a custom context, you can skip this parameter by NULL.

offset

The offset where the reading starts.

maxlen

Maximum length of data read.

Return Values

The function returns the read data or FALSE on failure.

ChangeLog

Version Description
5.0.0 Added context support.
5.1.0 Added the offset and maxlen parameters.
6.0.0 The use_include_path parameter was replaced by the flags parameter.

Notes

Note:

This function is binary-safe.

Tip:

You can use a URL as a filename with this function if the fopen wrappers have been enabled. See fopen() for more details on how to specify the filename and AppendixO, List of Supported Protocols/Wrappers for a list of supported URL protocols.

Warning:

When using SSL, Microsoft IIS will violate the protocol by closing the connection without sending a close_notify indicator. PHP will report this as "SSL: Fatal Protocol Error" when you reach the end of the data. To workaround this, you should lower your error_reporting level not to include warnings. PHP 4.3.7 and higher can detect buggy IIS server software when you open the stream using the https:// wrapper and will suppress the warning for you. If you are using fsockopen() to create an ssl:// socket, you are responsible for detecting and suppressing the warning yourself.

Related Examples ( Source code ) » file_get_contents





Code Examples / Notes » file_get_contents

greg ambrose greg

[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.


tobsn

you'll find the http response headers in: $http_response_header
;o)


siegfri3d

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.


aidan

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


fcicqbbs

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

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!!!


bearachute

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!


Change Language


Follow Navioo On Twitter
basename
chgrp
chmod
chown
clearstatcache
copy
delete
dirname
disk_free_space
disk_total_space
diskfreespace
fclose
feof
fflush
fgetc
fgetcsv
fgets
fgetss
file_exists
file_get_contents
file_put_contents
file
fileatime
filectime
filegroup
fileinode
filemtime
fileowner
fileperms
filesize
filetype
flock
fnmatch
fopen
fpassthru
fputcsv
fputs
fread
fscanf
fseek
fstat
ftell
ftruncate
fwrite
glob
is_dir
is_executable
is_file
is_link
is_readable
is_uploaded_file
is_writable
is_writeable
lchgrp
lchown
link
linkinfo
lstat
mkdir
move_uploaded_file
parse_ini_file
pathinfo
pclose
popen
readfile
readlink
realpath
rename
rewind
rmdir
set_file_buffer
stat
symlink
tempnam
tmpfile
touch
umask
unlink
eXTReMe Tracker