1、使用PHP Mail函數發送Email$to = "viralpatel.net@gmail.com"; $subject = "VIRALPATEL.net"; $body = "Body of your message here you can use HTML too. e.g. ﹤br﹥ ﹤b﹥ Bold ﹤/b﹥"; $headers = "From: Peterrn"; $headers .= "Reply-To: info@yoursite.comrn"; $headers .= "Return-Path: info@yoursite.comrn"; $headers .= "X-Mailer: PHP5n"; $headers .= 'MIME-Version: 1.0' . "n"; $headers .= 'Content-type: text/html; charset=iso-8859-1' . "rn"; mail($to,$subject,$body,$headers); ?﹥

2、PHP中的64位編碼和解碼function base64url_encode($plainText) {$base64 = base64_encode($plainText);$base64url = strtr($base64, '+/=', '-_,');return $base64url;}function base64url_decode($plainText) {$base64url = strtr($plainText, '-_,', '+/=');$base64 = base64_decode($base64url);return $base64;}

3、獲取遠程IP地址function getRealIPAddr(){if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet{$ip=$_SERVER['HTTP_CLIENT_IP'];}elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy{$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];}else{$ip=$_SERVER['REMOTE_ADDR'];}return $ip;}

4、 日期格式化function checkDateFormat($date){//match the format of the dateif (preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $date, $parts)){//check weather the date is valid of notif(checkdate($parts[2],$parts[3],$parts[1]))return true;elsereturn false;}elsereturn false;}

5、驗證Email$email = $_POST['email'];if(preg_match("~([a-zA-Z0-9!#$%&'*+-/=?^_`{|}~])@([a-zA-Z0-9-]). ([a-zA-Z0-9]{2,4})~",$email)) {echo 'This is a valid email.';} else{echo 'This is an invalid email.';}

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