Diprendra Programming challenge Solution

<?php



$limit=$argv[2];

unset($argv[0]);


if($argc<=1){
    echo "Input something.";
}
else if($argc>=2){
$input=$argv[1];
/*
hack for limiting
$paylwa=$argv[3];

$paylwa=str_replace('$limit', "$limit", $argv[3]);
echo "\n\n".strpos($paylwa, '$limit');
*/

}
// crawl the contents for the first time
function crwal($url){
$chandle=curl_init();
curl_setopt($chandle, CURLOPT_URL, $url);
curl_setopt($chandle,CURLOPT_RETURNTRANSFER,true);
return curl_exec($chandle);
curl_close($chandle);


}
//crawling done
//hack for limiting
$paylo=$argv[3];
$paylo=str_replace('$limit', "$limit", $paylo);

$paylo=str_replace('%22', '"', $paylo);
//echo $paylo;


$payload=urlencode($paylo);
//payload done after limiting

@$fullurl=$input.$payload;
echo "\n\n\nFull Query: ".$fullurl."\n\n\n";
echo "..Fetching..";
$fullurl=str_replace('%3F','?', $fullurl);
$fullurl=str_replace('%3D','=', $fullurl);


//


$string=crwal($fullurl);
echo "\n";
//cleaning the content to get the required part
function parse(){
    global $string;
    $string=$string;
        $parse=strpos($string,'<spanoid>');


    $string=stristr($string,'<spanoid>');


    $parse=stristr($string,'</spanoid>',1);

    $parse=str_replace('<spanoid>','',$parse);
    $parse=str_replace('<br>',"\n",$parse);

    return $parse;

}
//parsing done

$final=parse();
echo $final;
$length=strlen($final);
//condition to continue getting contents
while(strlen($length)!=0){

    $limit+=1;
    $paylo=$argv[3];
    $paylo=str_replace('$limit', "$limit", $paylo);
    $paylo=str_replace('%22', '"', $paylo);
    $payload=urlencode($paylo);

    //echo $limit;
    //break;
    @$fullurl=$input.$payload;

    $fullurl=str_replace('%3F','?', $fullurl);
    $fullurl=str_replace('%3D','=', $fullurl);

    $string=crwal($fullurl);
    echo "\n";
    $final=parse();
    echo "\n";

    $length=strlen($final);
    if($length==0){
        die("\n\nthe data extraction has been completed\n\n");
    }

    echo $final;

}



?>