php Parsing A String With Multiple Delimiters [duplicate]

I want to parse string in php with multiple delimiters I use this code

$pattern = '/[, ]/';

$array = preg_split( $pattern, $string);

This work fine , but I want to use and "[" and "]" as delimiters!!

How can I include this delimiters in $pattern. I try with $pattern = '/[, []]/'; and $pattern = '/[, ]/'; but error occurred.

Thanks

Escaping the brackets should work.

\[

Edit: use json_decode() instead.