note 32616 deleted from functions.arguments by nikic

Note Submitter: bishop ---- A tiny clarification on the notes of "keeper at odi dot com dot br", et. al. Functions explicitly prototyped with formal parameters passed by reference can't have default values. However, functions prototyped to assign default values to formal parameters may be passed references. For example, this is a parse error: function foo(&$bar = null) { // formal parameters as references can't have default values $bar = 242; } While this is perfectly legal (and probably what you want, mostly): function foo($bar = null) { $bar = 242; } foo(); // valid call, no warnings about missing args foo(&$x); // valid call, post $x == 242