<?php
if(isset($_POST['check']) && $_POST['url']) {
$url = htmlentities($_POST['url']);
set_time_limit(5);
$sajt_otvor = fopen($url,"r");
$sajt_citac = fread($sajt_otvor, 1000);
fclose($sajt_otvor);
if(strlen($sajt_citac)>1) {
echo("Sajt (".$url.") je <font color='green'>online</font>");
}
else {
echo("Sajt (".$url.") je <font color='red'>offline</font>");
}
}
?>
<html>
<head>
<title>Site Up/Down</title>
<style type='text/css'>
body {
text-align:center;
font-size:36px;
font-weight:bold;
}
</style>
</head>
<body>
<form method='POST'>
Link: <input type='url' name='url' /><input type='submit' name='check' value='Proveri' />
</form>
</body>
</html>