Printing and parsing JSON variable in PHP - php

Question

I've the following PHP code with a JSON variable...
$route_geometry_json = "{
\"route_geometry\": [
[44.911537, 7.671326],
[44.911481, 7.671462],
[44.911455, 7.671531],
[44.911434, 7.671602],
[44.911358, 7.671859],
[44.911273, 7.672175],
[44.911198, 7.672458],
[44.91113, 7.672617],
[44.911069, 7.67275],
[44.911003, 7.672821],
[44.910945, 7.672881],
[44.910869, 7.672954],
[44.910868, 7.673046],
[44.91091, 7.673109],
[44.91095, 7.67319],
[44.910964, 7.673266],
[44.910958, 7.673407],
[44.910955, 7.6735],
[44.910947, 7.673632],
[44.910922, 7.673871],
[44.910828, 7.674786],
[44.910711, 7.675816],
[44.910606, 7.676364],
[44.910467, 7.676322],
[44.910368, 7.676308],
[44.910051, 7.676253],
[44.9097, 7.676162],
[44.90944, 7.676041],
[44.909297, 7.675958],
[44.909174, 7.67583],
[44.909107, 7.675722],
[44.908993, 7.675583],
[44.908758, 7.675448],
[44.90796, 7.675037]
]
}";
print "Route geometry -->" + json_encode($route_geometry_json);
The print return "0": any suggestion / example?
I'd like also to extract / print the coords couples like
44.908993, 7.675583
44.908758, 7.675448
Any suggestion will be appreciated ...
Thanks
Cesare

Answer 1

Use this code:
$route_geometry = json_decode($route_geometry_json);
foreach ($route_geometry->route_geometry as $value) {
echo $value[0].', '.$value[1].'<br />';
}

Answer 2

You need to print_r(json_decode($route_geometry_json)) it and not json_encode
json_encode is for creating a JSON string. But since you already have a JSON string already, you need to Decode it to make it an Array/Object.
UPDATE
Your requirement
echo "Route geometry -->";
print_r(json_decode($route_geometry_json));
You cannot concat a String and an Object, so you were getting that Parse error.