<?php

function find($string, $start, $end){
    $string = ' ' . $string;
    $ini = strpos($string, $start);
    if ($ini == 0) return '';
    $ini += strlen($start);
    $len = strpos($string, $end, $ini) - $ini;
    return substr($string, $ini, $len);
}

$baseLink = "https://www.subito.it/annunci-italia/vendita/auto/?advt=p&o=";

$toExtract = 2000;


for($i = 1000; $i<=$toExtract; $i++){


    $currentPage = file_get_contents($baseLink. $i);

    $toParse = explode("<li>", $currentPage);

    foreach ($toParse as $part){

        if(strpos($part, "item_list_section item_image")){

            $link = find($part, 'item_image"> <a href="', '">');


            $findPhone = file_get_contents($link);

            $phone = find($findPhone, 'data-prop-phone="', '"');

                        if(strlen($phone)==10){
                                if($phone[0] == 3){
                        file_put_contents("phones.txt", "+39" . $phone . PHP_EOL, FILE_APPEND);

                                echo "+39" .$phone . PHP_EOL;}
                        }

        }

    }

}


?>