KCAPTCHA php5.3 버전 이하에서 나는 오류 수정

Author: thisgun

plugin/kcaptcha/kcaptcha.lib.php

@@ -18,6 +18,8 @@
 
 class KCAPTCHA{
 
+    private $keystring;
+
 	// generates keystring and image
 	function image(){
         require(dirname(__FILE__).'/kcaptcha_config.php');

plugin/kcaptcha/kcaptcha_image.php

@@ -4,10 +4,13 @@
 
 $captcha = new KCAPTCHA();
 $ss_captcha_key = get_session("ss_captcha_key");
+$ss_captcha_key_decrypt = '';
 if( $ss_captcha_key && !preg_match('/^[0-9]/', $ss_captcha_key) && function_exists('get_string_decrypt') ){
     $ip = md5(sha1($_SERVER['REMOTE_ADDR']));
-    $ss_captcha_key = str_replace($ip, '', get_string_decrypt($ss_captcha_key));
+    $ss_captcha_key_decrypt = str_replace($ip, '', get_string_decrypt($ss_captcha_key));
 }
-$captcha->setKeyString($ss_captcha_key);
+# php 5.2 또는 5.3 버전에서 포인터처럼 해당 세션값이 변경되는 버그가 있어서 아래와 같이 조치함
+if(! $ss_captcha_key_decrypt) $ss_captcha_key_decrypt = $ss_captcha_key;
+$captcha->setKeyString($ss_captcha_key_decrypt);
 $captcha->getKeyString();
 $captcha->image();