#23874 [Opn->Bgs]: fread() exits prematurely on files opened over HTTP

ID: 23874 Updated by: iliaa@php.net Reported By: kier at vbulletin dot com -Status: Open +Status: Bogus Bug Type: *Directory/Filesystem functions Operating System: Redhat Linux 8.0 PHP Version: 4.3.2 New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php You should be doing: $contents = ''; while (($data = fread($fp, 99999999))) { $contents .= $data; } A single fread() could get interupted by a signal and thus not fetch all the data. By having the read code in a loop you protect yourself against such a problem. Better yet, use file_get_contents() to fetch the entire file in one go. This function was introduced in PHP 4.3.0. Previous Comments: ------------------------------------------------------------------------ [2003-05-29 12:16:48] kier at vbulletin dot com After switching from PHP 4.3.2 RC2 to PHP 4.3.2 RC4 I noticed that a lot of my scripts failed to properly open the files they were asked to... Here is an example script that works fine under PHP 4.3.2 RC2 but breaks under 4.3.2 RC4 and later. I have not tried 4.3.2 RC3 so I can't say whether the problem was introduced at the RC3 or RC4 stage. Nonetheless, the problem still exists in PHP 4.3.2 Final. <?php $path = 'http://www.domain.com/some/large/page.html'; $fp = fopen($path, 'r'); $contents = fread($fp, 99999999); echo '<pre>' . htmlspecialchars($contents) . '</pre>'; ?> This will output the HTML source of the page referenced in $path, but under recent versions of PHP 4.3.2 the contents is truncated, having not reached the end of the file. It is worth noting that using $contents = ''; while (!feof($fp)) { $contents .= fgets($fp, 100); } does not exhibit the fread() truncation problem, and neither does using fread() on LOCAL files. The problem seems isolated to opening remote files over HTTP with fread(); I have verified this bug on several servers under different PHP configurations. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=23874&edit=1