Why does packet loss occur when parsing links?

Question

PHP

Wrote a miniature code for parsing "some" values ​​from the site. Actually here it is:

<?php 
    $link  = explode("\n", file_get_contents('link.txt'));
    $proxy = explode("\n", file_get_contents('proxy.txt'));

    $str = [*массив регулярных выражений*];
   
    $i = 0; $range = [13, 30];

    function SetProxy($mas){
        $config = array(
            'http' => array(
                'timeout' => 1.5,
                'proxy' => trim($mas[rand(0, count($mas))]),
                'request_fulluri' => true,
            ),
        );

        return stream_context_create($config);
    }


    $crContext = SetProxy($proxy);

    for($set = $range[0]; $set < $range[1]; $set++){

        if ($set % 2 == 0){ ReSetProxy:$crContext = SetProxy($proxy); }

        if($get_page = @file_get_contents(trim($link[$set]), False, $crContext)){

            $encoding = iconv("cp1251", "UTF-8", $get_page);

            for($l=0; $l < count($str); $l++){
                preg_match_all('~'.$str[$l].'~si', $encoding, $result);
                if($result[1][0] != null) 
                    if(count($result[1]) < 2) $MoveList[$i][] = preg_replace('~(<br[^>]*>|&nbsp;)~is', ' ', $result[1][0]); else{
                         for($g=0; $g < count($result[1]); $g++)
                             if($result[1][$g] != null) $temp .= ' '.$result[1][$g];
                        $MoveList[$i][] = str_replace(' ', ', ', trim($temp)); 
                    }
                unset($temp);
            }

            if(isset($MoveList[$i])){ $i++ }else{ goto ReSetProxy; }
        
        }else{ goto ReSetProxy; } 
    }
    
   print_r($MoveList);
?>

As a result, the whole thing returns only 12 values, no more. Who can say why this happens and whether it is treated?

Answer 1

Try it with XPath.
Related material: https://youtu.be/id_MNxmdRvk