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<?php
var_dump($_GET['a'],$_POST['a'],$_REQUEST['a']);
?>
<html>
<head><title>demo</title></head>
<body>
<form method= 'post' action = 'req.php?a=xxx'>
<input type='hidden' name='a' value='yyy'/>
<input type='submit' name='submit' value='submit'/>
</form>
</body>
</html>
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; This directive describes the order in which PHP registers GET, POST, Cookie,
; Environment and Built-in variables (G, P, C, E & S respectively, often
; referred to as EGPCS or GPC). Registration is done from left to right, newer
; values override older values.
variables_order = "EGPCS"
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<?php
$start = ip2long('192.168.1.1');
$start = sprintf("%u", $start) ;
$end = ip2long('192.168.1.50');
$end = sprintf("%u", $end) ;
for ($start; $start<$end; $start++){
echo long2ip($start)."<br>";
}
?> ......

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