[PHP-DOC] call_user_func

[Keppla]

Hello there   I think I found an undocumented behavior in the 'call_user_func' function in PHP version 4.3.1.   All arguments are passed by value, even if you call a function that takes its arguments by reference.   Here is my example:   <?php   function createString( &$arg ) {  $arg = 'Hello World'; }   // calling the function normally   createString( $stdCall ); echo "<p>'createString($stdCall)' works: '$stdCall'</p>";   // calling the function by using a variable as functionname   $funcName = 'createString'; $funcName( $varCall );   echo "<p>'$func($varCall)' works: '$varCall'</p>";   // calling the function by call_user_func   call_user_func( 'createString', $userCall ); echo "<p>'call_user_func( 'createString', $userCall )' does not work: '$userCall'</p>"; ?>   greetings   Philipp Benjamin Köpchen