wordpress Shortocode running twice?

Question

I developed a plugin for my citrus payment gateway.I created a shortcode to manage it. It was running absolutely fine some days ago.Now I don't know who changed what, now that shortcode is running twice :(

This is my code I am using.

add_shortcode('citrusafterpayment', 'citrusafterpayment_function');

function citrusafterpayment_function()
{

    mail('[email protected]','check-in','asd');
    global $wpdb;
    if(isset($_REQUEST['TxStatus']) && $_REQUEST['TxStatus'] != '')
    {
       if($TxStatus == 'CANCELED')
        {
           $return_msg = '<div class="row-fluid"><div class="span12"> <div class="error">You have canceled your transaction.</div></div></div>';
          return $return_msg;
        }
    }
}  

I am using this shortcode on one of my webpage. Whenever that page is hitting I am getting emails two times.

I googled it but there is no useful result.

Please help me.

Answer 1

Try this way, it's not the proper way to figure it out but it will solve your problem.

function citrusafterpayment_function()
{
    static $calls = 0;

    if($calls == 0){ $calls++;
       mail('[email protected]','check-in','asd');
       global $wpdb;
       if(isset($_REQUEST['TxStatus']) && $_REQUEST['TxStatus'] != '')
       {
           if($_REQUEST['TxStatus'] == 'CANCELED')
           {
           $return_msg = '<div class="row-fluid"><div class="span12"> <div class="error">You have canceled your transaction.</div></div></div>';
          return $return_msg;
           }
       }  
    }


} 

Edited:

You should pass: $_REQUEST['TxStatus'] in the if statement $TxStatus is not defined in the function.