note 47578 added to function.call-user-func-array

Be aware the call_user_func_array always returns by value, as demonstrated here... <?php function &foo(&$a) { return $a; } $b = 2; $c =& call_user_func_array('foo', array(&$b)); $c++; echo $b . ' ' . $c; ?> outputs "2 3", rather than the expected "3 3". Here is a function you can use in place of call_user_func_array which returns a reference to the result of the function call. <?php function &ref_call_user_func_array($callable, $args) { if(is_scalar($callable)) { // $callable is the name of a function $call = $callable; } else { if(is_object($callable[0])) { // $callable is an object and a method name $call = "\$callable[0]->{$callable[1]}"; } else { // $callable is a class name and a static method $call = "{$callable[0]}::{$callable[1]}"; } } // Note because the keys in $args might be strings // we do this in a slightly round about way. $argumentString = array(); $argumentKeys = array_keys($args); foreach($argumentKeys as $argK) { $argumentString[] = "\$args[$argumentKeys[$argK]]"; } $argumentString = implode($argumentString, ', '); // Note also that eval doesn't return references, so we // work around it in this way... eval("\$result =& {$call}({$argumentString});"); return $result; } ?> ---- Manual Page -- http://www.php.net/manual/en/function.call-user-func-array.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+47578 Delete -- http://master.php.net/manage/user-notes.php?action=delete+47578&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+47578&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+47578&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+47578&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+47578&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+47578&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+47578&report=yes Search -- http://master.php.net/manage/user-notes.php