Difference between revisions of "Do not use die to debug"

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m (Fixed markup.)

Revision as of 19:07, 28 December 2008

Joomla! 1.5 includes the ability to optionally store the user session in the database. In PHP 5, because of the order in which it does things, a connection to the database will be closed before it fires the session handlers.

As a result of this, the common-place practice of using the die( 'test1' ); function will result in a plethora of errors being thrown, similar to the following:

Warning: mysqli_query() [<a href='function.mysqli-query'>function.mysqli-query</a>]:
Couldn't fetch mysqli in C:\Apache2\htdocs\www_site\libraries\joomla\database\database\mysqli.php on line 147


Warning: mysql_real_escape_string() [function.mysql-real-escape-string]:
Access denied for user 'root'@'localhost' (using password: NO) in /var/www/html/libraries/joomla/database/database/mysql.php on line 105

In order to stop execution gracefully, you need to use the following code:

echo 'Test';

If you are developing your own component, you might like to include your own utility function to provide this functionality:

function stop($msg = '')
    global $mainframe;
    echo $msg;