- json_decode: documentation ( source)
- print_r: documentation ( source)
<?php
$arr = json_decode("_method=POST&data%5BFeedback%5D%5Bbusiness_name%5D=Hello&data%5BFeedback%5D%5Bcontact_name%5D=&data%5BFeedback%5D%5Bphone_number%5D=&data%5BFeedback%5D%5Bstate_name%5D=&data%5BFeedback%5D%5Bemail%5D=&data%5BFeedback%5D%5Bmessage%5D=");
print_r($arr);