note 115737 added to functions.user-defined

Please be advised that the code block defining the function, within the function_exists() call, has to be executed for the function to get defined, whereas this is not the case for regular, unenclosed functions. Meaning, if you write code like this: <?php do_function(); if (!function_exists('my_undefined')) { function my_undefined() { } } function do_function() { my_undefined(); } ?> ..Then my_undefined will not be defined before the code in do_function calls it. Some people put their function sections below the regular executing code of the script. Making any of it 'pluggable' can then cause problems. ---- Server IP: 72.52.91.14 Probable Submitter: 77.249.176.227 ---- Manual Page -- http://php.net/manual/en/functions.user-defined.php Edit -- https://master.php.net/note/edit/115737 Del: integrated -- https://master.php.net/note/delete/115737/integrated Del: useless -- https://master.php.net/note/delete/115737/useless Del: bad code -- https://master.php.net/note/delete/115737/bad+code Del: spam -- https://master.php.net/note/delete/115737/spam Del: non-english -- https://master.php.net/note/delete/115737/non-english Del: in docs -- https://master.php.net/note/delete/115737/in+docs Del: other reasons-- https://master.php.net/note/delete/115737 Reject -- https://master.php.net/note/reject/115737 Search -- https://master.php.net/manage/user-notes.php