<?php

$spisok = "spisok.txt"; 
$zergood = 'good.txt';


for ($doscriot=0;$doscriot<=count($contents);$doscriot++) 
{
$spisok = "spisok.txt";

$handle = fopen($spisok,"r");
$contents = fread($handle,filesize($spisok));
fclose($handle);
$contents = explode("\n",$contents);
$stroka=trim($contents[$doscriot]);

$findme="&photo=";
$poisk = strpos($stroka, $findme);

if ($poisk === false) {

}

 else {

$udacha = fopen($zergood, 'a');
fwrite($udacha, "$stroka\r\n");
fclose($udacha);
}

}

?>