- file_get_contents: documentation ( source)
- json_decode: documentation ( source)
<?php
$url = "http://api.giphy.com/v1/gifs/search?q=hello&api_key=dc6zaTOxFJmzC";
$content = file_get_contents($url);
$json = json_decode($content);
echo $json->images[0]->fixedheight->url[0];
?>