php - Returning foreach value from function to array -

i have function , passing array argument in validate it. on next page inserting array argument. below:

function check_subject($sub_array) {     foreach($sub_array $value)     {         if (!empty($value))         {             if (!preg_match('/^[0-9a-za-z ]{2,20}$/', $value))             {         return "not supported format";             }          }     } } 

other page inserting $errors[] = check_subject($g8_sub_vali); , storing return result in $error[] array.

than printing error if else somehitng below..

if($errors)         {             foreach ($errors $msg)              {                 if(!empty($msg))                 {                 echo " - $msg<br />\n";                 }             }         } else         {             echo "there no error";                 } 

but not getting else loop value "there no error". think there problem in returning function. can please suggest me?

since making:-

$errors[] = check_subject($g8_sub_vali); 

this line append null array in case making check valid entry because function return null.

so if want prevent should do:-

$err = check_subject($g8_sub_vali); if(empty($err)==false)    $errors[] = $err; 

this give valid values of errors , in else loop if there no error.