rewind in PHP

rewind — Rewind the position of a file pointer
Syntax:

bool rewind ( resource $handle )
Sets the file position indicator for handle to the beginning of the file stream.

Note:
If you have opened the file in append ("a" or "a+") mode, any data you write to the file will always be appended, regardless of the file position.
Parameters:

handle
The file pointer must be valid, and must point to a file successfully opened by fopen().

Return values: Returns TRUE on success or FALSE on failure.



Example #1 rewind() overwriting example

<?php
$handle = fopen('output.txt', 'r+');

fwrite($handle, 'Really long sentence.');
rewind($handle);
fwrite($handle, 'Foo');
rewind($handle);

echo fread($handle, filesize('output.txt'));

fclose($handle);
?>
The above example will output something similar to:

Foolly long sentence.