PHPの環境変数
<!DOCTYPE>
<html>
<head>
<meta charset="utf-8">
<title>Test</title>
</head>
<body>
<?php
function h($var){
if(is_array($var)){
return array_map('h',$var);
} else {
return htmlspecialchars( $var,ENT_QUOTES,'UTF-8');
}
}
$agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SREVER['HTTP_USER_AGENT'] : '';
$ip = issset($_SEREVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '' ;
$ref = isset($_SEREVER['HTTP_REFERER']) ? $_SEREVER['HTTP_REFERER'] : '';
echo 'ブラウザ' .h($agent). '<br />';
echo 'IPアドレス' .h($ip).'<br />';
echo '参照元' .h('$ref').'<br />';
echo '<pre>';
var_dump(h($_SERVER));
echo '</pre>';
?>
</body>
</html>