How to traverse array after decoding JSON [duplicate] - php

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PHP JSON decode - stdClass
I have a JSON file with a structure like this:
[{"key_mappings": "",
"screen2_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen2_thumb.png",
"video_url": "http://www.youtube.com/watch?v=S7MDxObgJxw",
"rating": "Teen",
"screen1_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen1_thumb.png",
"metascore": 43.63,
"height": 500,
"screen3_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen3_thumb.jpg",
"stage3d": false,
"screen3_url": "http://games.mochiads.com/c/g/siegius-arena/screen3.jpg",
"recommendation": 5,
"coins_revshare_enabled": null,
"category": "Fighting",
"screen4_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen4_thumb.png",
"uuid": "6789c7e3-fd27-345e-85d9-e6a58165ae57",
"author": "Juice-Tin",
"thumbnail_large_url": "http://games.mochiads.com/c/g/siegius-arena/_thumb_200x200.png",
"author_link": "https://www.mochimedia.com/community/profile/Juice-Tin",
"controls":
[["C", "Item"],
["V", "Spell"],
["X", "Heavy Attack"],
["Z", "Fast Attack"],
["fire", "na"],
["jump", "na"],
["movement", "arrow"]],
"languages": ["en"],
"swf_url": "http://games.mochiads.com/c/g/siegius-arena/Siegius%20Arena_.swf",
"recommended": true,
"game_tag": "e0e05c5c5fd1a61b",
"achievements_enabled": false,
"zip_url": "http://games.mochiads.com/c/g/siegius-arena.zip",
"screen1_url": "http://games.mochiads.com/c/g/siegius-arena/screen1.png",
"updated": "2012-10-25T15:47:01.953336-08:00",
"description": "Fight in arena battles and upgrade your gladiator in this Action-RPG about betrayal and revenge.",
"tags": ["siegius", "arena", "gladiator", "rome", "battle", "fight", "upgrade", "rpg", "fans", "en"],
"swf_file_size": 10142842,
"leaderboard_enabled": false,
"game_url": "http://www.mochimedia.com/games/siegius-arena",
"screen2_url": "http://games.mochiads.com/c/g/siegius-arena/screen2.png",
"slug": "siegius-arena",
"categories": ["Action", "Fighting"],
"instructions": "",
"name": "Siegius Arena",
"created": "2012-10-25T12:47:55.080005-08:00",
"control_scheme": "{\"C\": \"Item\", \"fire\": \"na\", \"jump\": \"na\", \"V\": \"Spell\", \"X\": \"Heavy Attack\", \"Z\": \"Fast Attack\", \"movement\": \"arrow\"}",
"popularity": 0,
"feed_approval_created": "2012-10-25T13:30:53.505710-08:00",
"coins_enabled": null,
"thumbnail_url": "http://games.mochiads.com/c/g/siegius-arena/_thumb_100x100.png",
"screen4_url": "http://games.mochiads.com/c/g/siegius-arena/screen4.png",
"alternate_url": "",
"resolution": "800x500",
"width": 800}]
Then, I have a foreach statement which adds the data to a MYSQL database:
foreach($result as $key => $value) {
if($value) {
mysql_query("INSERT INTO `games_db`.`Games` (`title`, `description`, `image`, `category`, `page`, `rating`, `width`, `height`, `tags`) VALUES ('$value->name', '$value->description', '/images/$pageid.jpg', '$category', '$pageid', '$value->rating', '$value->width', '$value->height', '$value->tags')")
}
My question is, What do I have to do to show and insert the tags from the JSON file? Currently, When I run this page, the data for the "tags" column just says "Array".

Answer 1

You can use json_decode() as so:
$jsonString = '[{"key_mappings": "", "screen2_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen2_thumb.png", "video_url": "http://www.youtube.com/watch?v=S7MDxObgJxw", "rating": "Teen", "screen1_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen1_thumb.png", "metascore": 43.63, "height": 500, "screen3_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen3_thumb.jpg", "stage3d": false, "screen3_url": "http://games.mochiads.com/c/g/siegius-arena/screen3.jpg", "recommendation": 5, "coins_revshare_enabled": null, "category": "Fighting", "screen4_thumb": "http://games.mochiads.com/c/g/siegius-arena/screen4_thumb.png", "uuid": "6789c7e3-fd27-345e-85d9-e6a58165ae57", "author": "Juice-Tin", "thumbnail_large_url": "http://games.mochiads.com/c/g/siegius-arena/_thumb_200x200.png", "author_link": "https://www.mochimedia.com/community/profile/Juice-Tin", "controls": [["C", "Item"], ["V", "Spell"], ["X", "Heavy Attack"], ["Z", "Fast Attack"], ["fire", "na"], ["jump", "na"], ["movement", "arrow"]], "languages": ["en"], "swf_url": "http://games.mochiads.com/c/g/siegius-arena/Siegius%20Arena_.swf", "recommended": true, "game_tag": "e0e05c5c5fd1a61b", "achievements_enabled": false, "zip_url": "http://games.mochiads.com/c/g/siegius-arena.zip", "screen1_url": "http://games.mochiads.com/c/g/siegius-arena/screen1.png", "updated": "2012-10-25T15:47:01.953336-08:00", "description": "Fight in arena battles and upgrade your gladiator in this Action-RPG about betrayal and revenge.", "tags": ["siegius", "arena", "gladiator", "rome", "battle", "fight", "upgrade", "rpg", "fans", "en"], "swf_file_size": 10142842, "leaderboard_enabled": false, "game_url": "http://www.mochimedia.com/games/siegius-arena", "screen2_url": "http://games.mochiads.com/c/g/siegius-arena/screen2.png", "slug": "siegius-arena", "categories": ["Action", "Fighting"], "instructions": "", "name": "Siegius Arena", "created": "2012-10-25T12:47:55.080005-08:00", "control_scheme": "{\"C\": \"Item\", \"fire\": \"na\", \"jump\": \"na\", \"V\": \"Spell\", \"X\": \"Heavy Attack\", \"Z\": \"Fast Attack\", \"movement\": \"arrow\"}", "popularity": 0, "feed_approval_created": "2012-10-25T13:30:53.505710-08:00", "coins_enabled": null, "thumbnail_url": "http://games.mochiads.com/c/g/siegius-arena/_thumb_100x100.png", "screen4_url": "http://games.mochiads.com/c/g/siegius-arena/screen4.png", "alternate_url": "", "resolution": "800x500", "width": 800}]';
$jsonObject = json_decode($jsonString);
foreach ($jsonObject->tags as $tag) {
echo $tag . PHP_EOL;
//Do something
}
If you use less than PHP 5.2.0, you can use the JSON PECL Extension
I should also add that you shouldn't use the mysql functions any more - they're deprecated. See: Why shouldn't I use mysql_* functions in PHP?

Answer 2

use json_decode():
json_decode — Decodes a JSON string
$jsonObject = json_decode($string); // returns an object
or:
$jsonArray = json_decode($string, true); // if second argument is true, returned object will be converted to an associative array
Edit:
as suggested by #nickhar: NOTE: You need PHP 5.2.0 or above to use json_decode()
Or one of the emulations floating around – #mario