Instagram API + Wordpress Cache

USEinsta.php

<?php
/*
    You need to authorize your app with scope=public_content
    Example:
    https://api.instagram.com/oauth/authorize/?client_id=YOUR_CLIENT_ID&redirect_uri=REDIRECT_URL&response_type=token&scope=public_content
*/

$get_my_insta = instagram_feed('USERNAME', 'APP_IP', 'ACCESS_TOKEN', 10);

if ( $get_my_insta ) {
foreach($get_my_insta as $ins) {
    echo '<a class="instalink" href="<?php echo $ins->link; ?>" rel="nofollow" target="_blank">';
    $insta_file = $upload_dir['path'] . '/insta/insta-' . $ins->created_time . '.jpg';
    if (!file_exists($insta_file)) {
        $insta_file = compress_image($ins->images->standard_resolution->url, $insta_file, '70');
    }
    $insta_url = substr($insta_file,strlen($_SERVER['DOCUMENT_ROOT']));
?>
<span><i class="icon_heart_alt"></i><span><?php echo $ins->likes->count; ?></span></span>
    <?php if($ins->type == 'video') {
        echo '<video playsinline preload="auto" autoplay="autoplay" loop="loop" muted="" tabindex="0" src="'.$ins->videos->standard_resolution->url.'"></video>';
    } else {
        echo '<img src="'.placeImg($ins->images->standard_resolution->width, $ins->images->standard_resolution->height).'" data-defer="'.$insta_url.'" alt="'.strip_tags($ins->caption->text).'" width="'.$ins->images->standard_resolution->width.'" height="'.$ins->images->standard_resolution->height.'" itemprop="thumbnail" class="ac" />';
    }
    echo '</a>';
}

WPAinsta.php

<?php
function instagram_user_ID($username, $client_id, $token){
    $ins_id = get_transient( 'instagram_userid' );
    if ( false === $ins_id || empty($ins_id) ) {
        $url	= 'https://api.instagram.com/v1/users/search?q=' . $username . '&client_id=' . $client_id .'&access_token=' . $token;
        $api    = wp_remote_get( $url );
        $data 	= json_decode($api['body']);
        $ins_id = $data->data[0]->id;
        set_transient( 'instagram_userid', $ins_id, 12 * '3600' );
    }
    return $ins_id;
}
function instagram_feed( $username = '', $client_id = '', $access_token = '', $count = 2 ) {
    $instagram_id = instagram_user_ID($username, $client_id, $access_token);
    $insta_feed   = get_transient( 'instagram_feed' );
    if ( false === $insta_feed || empty($insta_feed) ) {
        $request    = 'https://api.instagram.com/v1/users/' . $instagram_id . '/media/recent/?count=' . $count . '&access_token=' . $access_token;
        $response   = wp_remote_get( $request );
        $data       = json_decode( $response['body'] );
        $insta_feed = $data->data;
        set_transient( 'instagram_feed', $insta_feed, 12 * '3600' );
    }
    return $insta_feed;
}

function curl_download_image($image_url, $image_file){
    $fp = fopen ($image_file, 'w+'); // open file handle
    $ch = curl_init($image_url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_FILE, $fp);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_TIMEOUT, 1000);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0');
//    curl_setopt($ch, CURLOPT_VERBOSE, true);   // Enable this line to see debug prints
    curl_exec($ch);

    curl_close($ch);
    fclose($fp);
}

function compress_image($source_url, $destination_url, $quality) {
    curl_download_image($source_url, $destination_url);
    $compressFile = substr($destination_url, 0, (strlen($destination_url))-(strlen(strrchr($destination_url, '.')))) . '-min.jpg';
    $info = getimagesize($destination_url);
    if ($info['mime'] == 'image/jpeg') $image = imagecreatefromjpeg($destination_url);
    elseif ($info['mime'] == 'image/gif') $image = imagecreatefromgif($destination_url);
    elseif ($info['mime'] == 'image/png') $image = imagecreatefrompng($destination_url);
    imagejpeg($image, $compressFile, $quality);
    return $compressFile;
}

function remove_insta_images(){
    $upload_dir = wp_upload_dir();
    $interval = strtotime('-7 days');
    $dir = $upload_dir['path'] . '/insta/';
    $files = array_diff(scandir($dir), array('.', '..'));
    foreach($files as $img){
        if (filemtime($dir . $img) < $interval ) unlink($dir . $img);
    }
}

function insta_wp_cron_071216(){
    if ( !wp_next_scheduled( 'insta_wp_cron_071216' ) ) {
        wp_schedule_event( time(), 'weekly', 'remove_insta_images');
    }
}
add_action('init', 'insta_wp_cron_071216');