<?php

$content = file_get_contents(__DIR__ . '/accounts');
$accounts = explode("\n", $content);
$accounts = array_filter(array_unique($accounts));
if (empty($accounts)) {
    echo("Add accounts to file  'accounts', each in a new line.\n");
}

@mkdir(__DIR__ . '/res');
@chmod(__DIR__ . '/res', 0777);

foreach ($accounts as $account) {
    if (download($account)) {
        echo "$account - OK!\n";
    } else {
        echo "$account - ERR!\n";
    }
    //sleep(1); // in seconds
}

function download($username)
{
    $url = "https://www.instagram.com/{$username}/";
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    //curl_setopt($ch, CURLOPT_HEADER, true);
    //curl_setopt($ch, CURLOPT_NOBODY, true);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36');
    $content = curl_exec($ch);
    //print_r(curl_getinfo($ch));
    //print_r($content);
    if (curl_getinfo($ch, CURLINFO_HTTP_CODE) === 404) {
        return false;
    }

    preg_match('/\_sharedData \= (.*?)\;\<\/script\>/s', $content, $matches);
    $arr = json_decode($matches['1'], true, 512, JSON_BIGINT_AS_STRING);
    $url = $arr['entry_data']['ProfilePage']['0']['graphql']['user']['profile_pic_url_hd'];

    if (($image = file_get_contents($url))) {
        return file_put_contents(sprintf('%s%s%s_%s', __DIR__ . '/res', DIRECTORY_SEPARATOR, $username, basename($url)), $image);
    }


    return false;
}