- var_dump: documentation ( source)
- json_decode: documentation ( source)
<?php
$json = "s=&input_4=&input_2=&input_3=&input_5=&input_6=&input_7=1095&gform_ajax=form_id%3D3%26title%3D%26description%3D%26tabindex%3D0&is_submit_3=1&gform_submit=3&gform_unique_id=&state_3=WyJbXSIsImFkNDdlOGUyZjMzNWU4YzljNDViMGZkZGUxY2UxOGU3Il0%3D&gform_target_page_number_3=0&gform_source_page_number_3=1&gform_field_values=";
$data = json_decode($json, true);
var_dump($data);