a.php

<?php 
header('Content-type: application/json');
error_reporting(E_ALL);
ini_set('display_errors', '1');

require_once 'settings_crowdcafe_local.php';
require_once 'libs/firebase/firebaseLib.php';

function setFirebaseValue($path, $value) {
	require_once 'settings_firebase.php';
	$firebase = new Firebase($firebase_url, $firebase_secret);
	return $firebase->push($path, $value);

}

$foo = file_get_contents("php://input");
$data = json_decode($foo, true);

$gold_string = $data['question']['gold_rectangle'];
foreach ($data['answer'] as $key=>$val){
	$answer_string = $val;
}

//var_dump($gold_string);
//var_dump($answer_string);

$gold_positions = explode(";", $gold_string);
$answer_positions = explode(";", $answer_string);

//var_dump(abs(floatval($gold_positions[0])-floatval($answer_positions[0])));
if (
	abs(floatval($gold_positions[0])-floatval($answer_positions[0])) < 0.05 and
	abs(floatval($gold_positions[1])-floatval($answer_positions[1])) < 0.05 and
	abs(floatval($gold_positions[2])-floatval($answer_positions[2])) < 0.05 and
	abs(floatval($gold_positions[3])-floatval($answer_positions[3])) < 0.05
	){
	echo 1;
}
else{
	echo -1;
}



$new_block = setFirebaseValue('answers',$data);
#echo json_decode($new_block)->name;

?>