php for json_decode code example
Example 1: php decode json file
$json = json_decode(file_get_contents('/path/to/your/file.json'));
Example 2: php json decoding as string incorrectly
//"[{\"name\": \"bill\", \"score\": 0.7948127388954163}, {\"name\": \"john\", \"score\": 0.782698392868042}]";
//for json in above format try this
$r=json_decode(stripcslashes(trim($response,'"')));