note 113150 added to function.create-function

I experimented a bit in creating a lambda function using a variable amount of arguments. While I couldn't find an efficient way to create a random bit of code, I was able to get it to behave as a front end for existing functions (as well as user-defined of course). The code required me to use the dreaded eval() function to get it to use a variable amount of parameters, so be sure that all input is thoroughly cleaned if derived from the user. <?php function run_function( $function ) { // Get Arguments, Unset Exisitng Parameter $params = func_get_args(); unset( $params[0] ); if( ( $count = count( $params ) ) > 0 ) { $args = '$a'; $inc = 'b'; // Create Argument String - Formats as '$a, $b, $c' Per Number of Arguments for( $x = 1; $x < $count; $x++ ) { $args .= ', $' . $inc; $inc++; } // Create Lambda Function and Format Paramters $lambda = create_function( $args, 'return ' . $function . '(' . $args . ');' ); $params = "'" . implode('\', \'', $params) . "'"; // Build and Evaluate Function with Parameters $eval = '$return = $lambda(' . $params . ');'; eval($eval); return $return; } else { return false; } } ?> For most applications you would be better off calling the function normally. Perhaps this little proof of concept may find some use if adapted to work by someone who requires it. ---- Server IP: 69.147.83.199 Probable Submitter: 75.31.207.158 ---- Manual Page -- http://php.net/manual/en/function.create-function.php Edit -- https://master.php.net/note/edit/113150 Del: integrated -- https://master.php.net/note/delete/113150/integrated Del: useless -- https://master.php.net/note/delete/113150/useless Del: bad code -- https://master.php.net/note/delete/113150/bad+code Del: spam -- https://master.php.net/note/delete/113150/spam Del: non-english -- https://master.php.net/note/delete/113150/non-english Del: in docs -- https://master.php.net/note/delete/113150/in+docs Del: other reasons-- https://master.php.net/note/delete/113150 Reject -- https://master.php.net/note/reject/113150 Search -- https://master.php.net/manage/user-notes.php