Bug #18006 Updated: more info

ID: 18006 Updated by: ilia@prohost.org -Summary: php cannot overwrite exsiting data in file Reported By: ilia@prohost.org Status: Open Bug Type: Scripting Engine problem -Operating System: Linux 2.4.18 +Operating System: Linux PHP Version: 4.2.1 New Comment: Sorry, the 2nd example is wrong, here is the correct one. <?php $fp = fopen('a', 'a+'); $s=ftell($fp); fseek($fp, $s+100, SEEK_SET); fseek($fp, $s, SEEK_SET); fwrite($fp, str_repeat('1', 100)); fclose($fp); ?> Previous Comments: ------------------------------------------------------------------------ [2002-06-26 21:06:47] ilia@prohost.org When doing the following in php, the result is a file that is 200 bytes, 100 bytes of NULL and 100 bytes of the actual data. <?php $fp = fopen('a', 'a+'); $s=ftell($fp); ftruncate($fp, $s+100); fwrite($fp, str_repeat('1', 100)); fclose($fp); ?> In reality there should be a 100 byte file, full of 1s. However, this example works <?php $fp = fopen('a', 'a+'); $s=ftell($fp); ftruncate($fp, $s+100, SEEK_SET); fseek($fp, $s, SEEK_SET); fwrite($fp, str_repeat('1', 100)); fclose($fp); ?> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=18006&edit=1