regex - php code with filter_var_array()/ filter_input_array not working properly -

a test of php code below ideone.com gives 2 errors

"php warning: filter_var_array(): 'regexp' option missing in /home/rhlgyu/prog.php on line 18"

the line $myinputs = filter_var_array($data, $args).

it may beginners experience dont understand error message, e.g., dont know goes wrong in code below. checked 2 regex expressions definitions (regexp_multiple_names, regexp_phone_nl) , okay.

i suspect there error in definition of $args, cant find (when compare examples in http://www.w3schools.com/php/filter_validate_regexp.asp).

php code:

define("regexp_multiple_names", "/^[a-za-z\s-]+$/i");  //expression check dutch phone numbers. number must start 0 , number of digits should 10. different area , country codes allowed. define("regexp_phone_nl", "/(^\+[0-9]{2}|^\+[0-9]{2}\(0\)|^\(\+[0-9]{2}\)\(0\)|^00[0-9]{2}|^0)([0-9]{9}$|[0-9\-\s]{10}$)/");   $data = array(     'city' => 'the hague',     'telephonenr' => '0701234567' ); $args = array(     'city' => array(         'filter' => filter_validate_regexp,         array(             "options" => array(                 "regexp" => regexp_multiple_names             )         )     ),     'telephonenr' => array(         'filter' => filter_validate_regexp,         array(             'options' => array(                 "regexp" => regexp_phone_nl             )         )     ) );  $myinputs = filter_var_array($data, $args); print_r($myinputs); 

looking @ php manual think suppose structured like:

$args = array( 'city' => array(     'filter' => filter_validate_regexp,     'options' => array(         "regexp" => regexp_multiple_names     ) ), 'telephonenr' => array(     'filter' => filter_validate_regexp,     'options' => array(         "regexp" => regexp_phone_nl     )   ) );