<?php
    $all = file('all.txt');
    /*
    foreach ($all as $a) {
        $a = explode(' - ', $a)[1];
        if (trim($a)) echo $a;
    }
    die();
    */
    $now = json_decode(file_get_contents('now.txt'));
    $used = [];
    $i = 0;
    foreach ($all as $a) {
        $used[$i] = ['proxy' => $a];
        foreach ($now as $index=>$pack) {
            foreach (explode("\n",$pack) as $item) {
                if (strripos($item, trim($a)) !== false) {
                    $used[$i]['used'][] = $index;
                }
            }
        }
        $i++;
    }
    print_R($used);