php 文本轉HTML與獲取IP函數

/**

* 文本轉HTML

*

* @param string $txt;

* return string;

*/

function Text2Html($txt){

$txt = str_replace("? ","　",$txt);

$txt = str_replace("

$txt = str_replace(">",">",$txt);

$txt = preg_replace("/[rn]{1,}/isU","
rn",$txt);

return $txt;

}

/**

* 獲得IP

* return string;

*/

function GetIP(){

if(!empty($_SERVER["HTTP_CLIENT_IP"])) { $cip = $_SERVER["HTTP_CLIENT_IP"]; }

else if(!empty($_SERVER["HTTP_X_FORWARDED_FOR"])) { $cip = $_SERVER["HTTP_X_FORWARDED_FOR"]; }

else if(!empty($_SERVER["REMOTE_ADDR"])) { $cip = $_SERVER["REMOTE_ADDR"]; }

else $cip = "";

preg_match("/[d.]{7,15}/", $cip, $cips);

$cip = $cips[0] ? $cips[0] : 'unknown';

unset($cips);

return $cip;

}

總結

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