I call session_start() the script hangs and nothing happens

I am running php5, however as soon as I call session_start() the script hangs and nothing happens. Is anyone else experiencing this problem, or am I doing something incorrectly?

I am using session_start() on index.php and for some reason sometimes it'll fail. No warnings, no errors, no notices, not even after prepending error_reporting(E_ALL) and ini_set('display开发者_Go百科_errors', TRUE) before session_start() do I see anything, it just plain dies.

There are many reasons for that, here are a few of them:

A. The session file could be opened exclusively. When the file lock is not released properly for whatever reason, it is causing session_start() to hang infinitely on any future script executions. Workaround: use session_set_save_handler() and make sure the write function uses fopen($file, 'w') instead of fopen($file, 'x')

B. Never use the following in your php.ini file (entropie file to "/dev/random"), this will cause your session_start() to hang:

<?php
ini_set("session.entropy_file", "/dev/random");
ini_set("session.entropy_length", "512");
?>

C. session_start() needs a directory to write to.

You can get Apache plus PHP running in a normal user account. Apache will then of course have to listen to an other port than 80 (for instance, 8080).

Be sure to do the following things: - create a temporary directory PREFIX/tmp - put php.ini in PREFIX/lib - edit php.ini and set session.save_path to the directory you just created

Otherwise, your scripts will seem to 'hang' on session_start().