- var_dump: documentation ( source)
- explode: documentation ( source)
- trim: documentation ( source)
- preg_split: documentation ( source)
<?php
$val = " 1 , 2,3 ";
$delimiter = ",";
var_dump(explode($delimiter, $val));
var_dump("/\s*$delimiter\s*/");
var_dump(preg_split("/\s*$delimiter\s*/", trim($val)));