note 93869 added to function.call-user-func

A good use for call_user_func(); is for recursive functions. If you're distributing code, you will often come across users who will rename functions and break the code.. Use this: call_user_func(__FUNCTION__, ... ); inside a function to call itself with whatever parameters you want. <?php // example, an extremely simplified factorial calculator.. // it's quite obvious when someone renames the function, it'll spit out an error because it wants to call itself. function Factorial($i=1) { return($i==1?1:$i*Factorial($i-1)); } // you can give this function whatever name you want, it'll always work, of course if you initially call it using the name you gave it. function qwertyuiop($i=1) { return($i==1?1:$i*call_user_func(__FUNCTION__,$i-1)); } ?> Just that I didn't see any reference to recursive functions when user_call_func(); really helps. ---- Server IP: 195.222.16.155 Probable Submitter: ::ffff:81.132.224.11 ---- Manual Page -- http://www.php.net/manual/en/function.call-user-func.php Edit -- https://master.php.net/note/edit/93869 Del: integrated -- https://master.php.net/note/delete/93869/integrated Del: useless -- https://master.php.net/note/delete/93869/useless Del: bad code -- https://master.php.net/note/delete/93869/bad+code Del: spam -- https://master.php.net/note/delete/93869/spam Del: non-english -- https://master.php.net/note/delete/93869/non-english Del: in docs -- https://master.php.net/note/delete/93869/in+docs Del: other reasons-- https://master.php.net/note/delete/93869 Reject -- https://master.php.net/note/reject/93869 Search -- https://master.php.net/manage/user-notes.php