//

// $cfg['required'] = array( 'name', 'vorname', 'email', 'kommentar' );

//

// (array) $missing = check_required_field( $_POST );

//

// if ( count( $missing ) ) {

//     (string) $required = implode( ", ", $missing );

//     echo "ERROR: The fields \"".$required."\" are missing!";

// }

//

// ***************************************************************

// this function check if all required POSTDATA was defined...

function check_required_field( $data ) {

global $cfg;

(array) $error = array();

foreach ( $cfg['required'] as $keys )

    if ( !$data[$keys] ) array_push( $error, $keys );

return $error;

}