<?php
$url = 'http://oceanseven.in/O7/xx/';
$fgc = file_get_contents($url);
if(preg_match_all('/<a\s+href=["\']([^"\']+)["\']/i', $fgc, $links, PREG_PATTERN_ORDER)) {
    $all_hrefs = array_unique($links[1]);
    if(!empty($all_hrefs)) {
        $num = 1;
        foreach($all_hrefs as $v_href) {
            if($num <= 10) {
                if(strpos($v_href, '.jpg') !== false) {
                    file_put_contents($v_href, file_get_contents($url . '/' . $v_href));
                }
            }
            $num++;
        }
    }
}