add comments

This commit is contained in:
Mahmood Reza Sajjadi 2014-02-28 01:37:53 +03:30
parent 540b9aab74
commit 3315068a30

View File

@ -15,11 +15,20 @@
* limitations under the License.
*/
/**
* Check if captcha is loadable or not by cheking captcha requirements
*
* @return bool reqirements are saticfird or not
*/
function can_show_captcha()
{
return extension_loaded("gd");
}
/**
* Using characters and numbers to generate captcha code
*
* @return string captcha code
*/
function gen_captcha()
{
$symbols = 'abcdefghijkmnpqrstuvwxyz123456789';
@ -30,7 +39,9 @@ function gen_captcha()
return $string;
}
/**
* Send captcha image directly to output
*/
function draw_captcha($security_code)
{
//Set the image width and height