rewind

(PHP 4, PHP 5, PHP 7, PHP 8)

rewind — Rewind the position of a file pointer

Description

rewind(resource $stream): bool

Sets the file position indicator for stream 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 pointer position.

Parameters

stream: 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.

Examples

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.

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User Contributed Notes 1 note

down

MagicalTux at kinoko dot fr ¶

17 years ago

Note that rewind($fd) is exactly the same as fseek($fd, 0, SEEK_SET)

rewind() just moves the location inside the file to the beginning, nothing more. Check if your stream is "seekable" before planning to use fseek/rewind.