instagram.php

function crb_get_instagram_feed( $username, $slice = 9 ) {

	$username = strtolower( $username );
	$username = str_replace( '@', '', $username );

	if ( false === ( $instagram = get_transient( 'instagram-a3-'.sanitize_title_with_dashes( $username ) ) ) ) {

		$remote = wp_remote_get( 'http://instagram.com/'.trim( $username ) );

		if ( is_wp_error( $remote ) )
			return new WP_Error( 'site_down', esc_html__( 'Unable to communicate with Instagram.', 'wp-instagram-widget' ) );

		if ( 200 != wp_remote_retrieve_response_code( $remote ) )
			return new WP_Error( 'invalid_response', esc_html__( 'Instagram did not return a 200.', 'wp-instagram-widget' ) );

		$shards = explode( 'window._sharedData = ', $remote['body'] );
		$insta_json = explode( ';</script>', $shards[1] );
		$insta_array = json_decode( $insta_json[0], TRUE );

		if ( ! $insta_array )
			return new WP_Error( 'bad_json', esc_html__( 'Instagram has returned invalid data.', 'wp-instagram-widget' ) );

		if ( isset( $insta_array['entry_data']['ProfilePage'][0]['user']['media']['nodes'] ) ) {
			$images = $insta_array['entry_data']['ProfilePage'][0]['user']['media']['nodes'];
		} else {
			return new WP_Error( 'bad_json_2', esc_html__( 'Instagram has returned invalid data.', 'wp-instagram-widget' ) );
		}

		if ( ! is_array( $images ) )
			return new WP_Error( 'bad_array', esc_html__( 'Instagram has returned invalid data.', 'wp-instagram-widget' ) );

		$instagram = array();

		foreach ( $images as $image ) {

			$image['thumbnail_src'] = preg_replace( '/^https?\:/i', '', $image['thumbnail_src'] );
			$image['display_src'] = preg_replace( '/^https?\:/i', '', $image['display_src'] );

			// handle both types of CDN url
			if ( (strpos( $image['thumbnail_src'], 's640x640' ) !== false ) ) {
				$image['thumbnail'] = str_replace( 's640x640', 's160x160', $image['thumbnail_src'] );
				$image['small'] = str_replace( 's640x640', 's320x320', $image['thumbnail_src'] );
			} else {
				$urlparts = wp_parse_url( $image['thumbnail_src'] );
				$pathparts = explode( '/', $urlparts['path'] );
				array_splice( $pathparts, 3, 0, array( 's160x160' ) );
				$image['thumbnail'] = '//' . $urlparts['host'] . implode('/', $pathparts);
				$pathparts[3] = 's320x320';
				$image['small'] = '//' . $urlparts['host'] . implode('/', $pathparts);
			}

			$image['large'] = $image['thumbnail_src'];

			if ( $image['is_video'] == true ) {
				$type = 'video';
			} else {
				$type = 'image';
			}

			$caption = __( 'Instagram Image', 'wp-instagram-widget' );
			if ( ! empty( $image['caption'] ) ) {
				$caption = $image['caption'];
			}

			$instagram[] = array(
				'description'   => $caption,
				'link'		  	=> '//instagram.com/p/' . $image['code'],
				'time'		  	=> $image['date'],
				'comments'	  	=> $image['comments']['count'],
				'likes'		 	=> $image['likes']['count'],
				'thumbnail'	 	=> $image['thumbnail'],
				'small'			=> $image['small'],
				'large'			=> $image['large'],
				'original'		=> $image['display_src'],
				'type'		  	=> $type
			);
		}

		// do not set an empty transient - should help catch private or empty accounts
		if ( ! empty( $instagram ) ) {
			$instagram = base64_encode( serialize( $instagram ) );
			set_transient( 'instagram-a3-'.sanitize_title_with_dashes( $username ), $instagram, apply_filters( 'null_instagram_cache_time', HOUR_IN_SECONDS*2 ) );
		}
	}

	if ( ! empty( $instagram ) ) {

		$instagram = unserialize( base64_decode( $instagram ) );
		return array_slice( $instagram, 0, $slice );

	} else {

		return new WP_Error( 'no_images', esc_html__( 'Instagram did not return any images.', 'wp-instagram-widget' ) );

	}
}