Encryption with Eval on PHP - decode

Question

need help all,
now I have code like
function encode64($text){
$text_encode = base64_encode($text);
$text_encode = str_replace("=","_",$text_encode);
if(strlen($text_encode)%2==1) $text_encode=$text_encode."*";
for($i=0;$i<strlen($text_encode)/2;$i++){
$result = $result.substr($text_encode,$i,1);
$result = $result.substr($text_encode,strlen($text_encode)-$i-1,1);
}
return strrev($result);
}
function decode64($text){
$text_decode = strrev($text);
for($i=0;$i<strlen($text_decode)/2;$i++){
$raw_result = $raw_result.substr($text_decode,$i*2,1);
}
for($i=strlen($text_decode)/2;$i>0;$i--){
$raw_result = $raw_result.substr($text_decode,$i*2-1,1);
}
if(substr($raw_result,strlen($raw_result)-1,1)=="*"){
for($i=0;$i<strlen($text_decode)-1;$i++){
$result = $result.substr($text_decode,$i,1);
}
return base64_decode($result);
}else return base64_decode($raw_result);
}
this is using encode64 : LnCQd3ybbv2J930JJsyckC7dbzX9lGzagasuiUIHUIYIUYUISydiuahsdoijpojOIJIOIoiewSJIODcsWFx2fYcv2xV2sJZoWQN30YXl25RmibKvCNd23XasXFJ3hcX531NG5Ic93ARilbbvSNcGsJI7CkRyjJbh2R4npcbh3tIWgYZKG9lSlYKpGN1X5Qcn3gFCsdXl2NV3yXclm592ybK6CVkWpbOp3RJ3lXd0HxVWydbhiZAWkZYk299VuZO0wF_G_Z
and who can give me result
why can't read full code, I just can read like below:
http://i60.tinypic.com/2euomzq.png
can give me any solution because I need full code.