Re: [PHP] Re: Recursive Threading with PHP and MySQL.
Recursive functions are generally a bad idea especially in php. By using a recursive function it is possible you may "smash the stack", which will crash an apache child (segfaults) and on a multi-threaded server take down the whole webserver. Even with a default memory limit of 8 megs an attacker could crash php by accessing the same thread multiple times. This is NOT a theoretical situation, I've actually came across it while writing a tree drawing code for a forum. The problem exists in all the php that I've tested (PHP 4.0.5,4.0.6,4.1.0RC5). -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] Re: Recursive Threading with PHP and MySQL.
recursion is something that can be fun and practical at times, other times its a bad coder trying to do something they think is clever. use it wisly. this example is purposely coded bad to show you how recursion can mess up with bad error checking. this example will work. change to power(30) and you'll get a segfault because $num will allways equal anything but 2. this gives you a starting point on recursion. -- Chris Lee [EMAIL PROTECTED] "Alawi" <[EMAIL PROTECTED]> wrote in message 002201c17dc2$75276cd0$753f47d4@mcsh2l7jqy8bgj">news:002201c17dc2$75276cd0$753f47d4@mcsh2l7jqy8bgj... I want to know how can i do that Recursive loop to get categories as example can any body help me by give my tutorial or any thing to understand this techniqe -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
