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fread() reads up to length bytes from the file pointer referenced by handle . Reading stops as soon as one of the following conditions is met:

length bytes have been read
EOF (end of file) is reached
a packet becomes available (for network streams)
8192 bytes have been read (after opening userspace stream)

Parameters

handle: A file system pointer resource that is typically created using fopen().
length: Up to length number of bytes read.

Return Values

Returns the read string or FALSE in case of error.

Examples

Example #1 A simple fread() example


<?php
// get contents of a file into a string
$filename = "/usr/local/something.txt";
$handle = fopen($filename, "r");
$contents = fread($handle, filesize($filename));
fclose($handle);
?>

Example #2 Binary fread() example

Warning

On systems which differentiate between binary and text files (i.e. Windows) the file must be opened with 'b' included in fopen() mode parameter.


<?php
$filename = "c:\\files\\somepic.gif";
$handle = fopen($filename, "rb");
$contents = fread($handle, filesize($filename));
fclose($handle);
?>

Example #3 Remote fread() examples

Warning

When reading from anything that is not a regular local file, such as streams returned when reading remote files or from popen() and fsockopen(), reading will stop after a packet is available. This means that you should collect the data together in chunks as shown in the examples below.


<?php
// For PHP 5 and up
$handle = fopen("http://www.example.com/", "rb");
$contents = stream_get_contents($handle);
fclose($handle);
?>


<?php
$handle = fopen("http://www.example.com/", "rb");
$contents = '';
while (!feof($handle)) {
  $contents .= fread($handle, 8192);
}
fclose($handle);
?>

Notes

Note: If you just want to get the contents of a file into a string, use file_get_contents() as it has much better performance than the code above.