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ftruncate

Contents

(PHP 4, PHP 5, PHP 7)

ftruncate — Truncates a file to a given length

Description

ftruncate ( resource $handle , int $size ) : bool

Takes the filepointer, handle, and truncates the file to length, size.

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Parameters

handle

The file pointer.

Note:

The handle must be open for writing.

size

The size to truncate to.

Note:

If size is larger than the file then the file is extended with null bytes.

If size is smaller than the file then the file is truncated to that size.

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Return Values

Returns TRUE on success or FALSE on failure.

PHP: ftruncate - Manual Home of Manuel PHP  Contents Haut

Examples

Example #1 File truncation example

<?php
$filename = 'lorem_ipsum.txt';

$handle = fopen($filename, 'r+');
ftruncate($handle, rand(1, filesize($filename)));
rewind($handle);
echo fread($handle, filesize($filename));
fclose($handle);
?>

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Notes

Note:

The file pointer is not changed.

PHP: ftruncate - Manual Home of Manuel PHP  Contents Haut

See Also

Find a PHP function
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