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  $a =1+1;
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  $b =1;
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  $d =$b +$c;
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<?php
function add($x,$y)
  {
  $total = $x + $y;
  return $total;
  }
echo "1+1=" . add(1,1);
?>
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bool curl_setopt (int ch, string option, mixed value)
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<?php
session_start();
$allow_sep = "30000";
if (isset($_SESSION["post_sep"]))
{
if (time() - $_SESSION["post_sep"] < $allow_sep)
{
exit("Çë²»Òª·´¸´Ë¢ÐÂ");
}
else
{
$_SESSION["post_sep"] = time();
}
}
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void header ( string string [, bool replace [, int http_response_code]] )
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