instagram_advanced_query.php

<?php

/**
 *	By default instagram doesn't allow us to query for more than
 *	attribute, such as media posted by a specific author tagged with
 *	a specific tag. In order to accomplish this we will acquire all of
 *	the media tagged with the tag we are looking for and then filter it
 *	down based on the user.
 */

// The tag you want to query
$tag = 'THE_TAG_YOU_WANT_TO_QUERY';

/**
 *	Query variables for the CURL URL
 * 	For simple queries the client ID alone will suffice. 
 * 	We also need a very high number for the requested amount
 * 	of posts so that the App continues to give us a paginated
 * 	URL that allows us to iterate through all of the media.
 */
$query = array(
	'client_id' => 'CLIENT_ID',
	'count'	    => 999999
);

// Set the url for the first iteration of the CURL
$url = "https://api.instagram.com/v1/tags/{$tag}/media/recent?".http_build_query($query);

/**
 *	Instagram will only give us 33 posts at a time, so at the end of the CURL
 *	we will reset the $url using the next_url atribute in the pagination section
 *	of the returned object.
 */
while ($url) {
	
	try {
		$curl_connection = curl_init($url);
		curl_setopt($curl_connection, CURLOPT_CONNECTTIMEOUT, 30);
		curl_setopt($curl_connection, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($curl_connection, CURLOPT_SSL_VERIFYPEER, false);
		
		//Data are stored in $data
		$data = json_decode(curl_exec($curl_connection), true);
		curl_close($curl_connection);
		
		/**
		 *	Loop through all of the posts retrieved in the latest CURL and assign
		 * 	them to our $instagram_posts variable if they were authored by the user
		 * 	we are looking for.
		 */
		if ( !empty( $data['data'] ) ) {
			foreach ($data['data'] as $post_tag_match) {
				if ( $post_tag_match['user']['username'] == 'USERNAME_TO_FILTER' ) {
					$instagram_posts[] = $post_tag_match;
				}
			}
		}
	
	} catch(Exception $e) {
		return $e->getMessage();
	}
	
	// Reset the $url variable using the next_url attribute.
	$url = $data['pagination']['next_url'];
}

// Display all of the posts
foreach ( $instagram_posts as $post ) {
	echo '<img src="' . $post['images']['standard_resolution']['url'] . '" />';
}

?>