(PHP 4 >= 4.3.0, PHP 5, PHP 7)
file_get_contents — Reads entire file into a string
file_get_contents ( string $filename [, bool $use_include_path = false [, resource $context [, int $offset = 0 [, int $maxlen ]]]] ) : string|false
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
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.
If you're opening a URI with special characters, such as spaces, you need to encode the URI with urlencode().
Name of the file to read.
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
The offset where the reading starts on the original stream. Negative offsets count from the end of the stream.
offset) is not supported with remote files. Attempting to seek on non-local files may work with small offsets, but this is unpredictable because it works on the buffered stream.
Maximum length of data read. The default is to read until end of file is reached. Note that this parameter is applied to the stream processed by the filters.
The function returns the read data or
false on failure.
E_WARNING level error is generated if
filename cannot be found,
maxlength is less than zero, or if seeking to the specified
offset in the stream fails.
Example #1 Get and output the source of the homepage of a website
<?php $homepage = file_get_contents('http://www.example.com/'); echo $homepage; ?>
Example #2 Searching within the include_path
<?php // If strict types are enabled i.e. declare(strict_types=1); $file = file_get_contents('./people.txt', true); // Otherwise $file = file_get_contents('./people.txt', FILE_USE_INCLUDE_PATH); ?>
Example #3 Reading a section of a file
<?php // Read 14 characters starting from the 21st character $section = file_get_contents('./people.txt', FALSE, NULL, 20, 14); var_dump($section); ?>
The above example will output something similar to:
string(14) "lle Bjori Ro"
Example #4 Using stream contexts
<?php // Create a stream $opts = array( 'http'=>array( 'method'=>"GET", 'header'=>"Accept-language: en\r\n" . "Cookie: foo=bar\r\n" ) ); $context = stream_context_create($opts); // Open the file using the HTTP headers set above $file = file_get_contents('http://www.example.com/', false, $context); ?>
|7.1.0|| Support for negative |
Note: This function is binary-safe.
A URL can be used as a filename with this function if the fopen wrappers have been enabled. See fopen() for more details on how to specify the filename. See the Supported Protocols and Wrappers for links to information about what abilities the various wrappers have, notes on their usage, and information on any predefined variables they may provide.
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 work around this, the value of error_reporting should be lowered to a level that does not include warnings. PHP can detect buggy IIS server software when you open the stream using the
https:// wrapper and will suppress the warning. When using fsockopen() to create an
ssl:// socket, the developer is responsible for detecting and suppressing this warning.
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