Title: Help with passing variable between functions
Last modified: September 1, 2016

---

# Help with passing variable between functions

 *  [learntodesign](https://wordpress.org/support/users/learntodesign/)
 * (@learntodesign)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/help-with-passing-variable-between-functions/)
 * Hello, I am fairly new to PHP and have been struggling with this for a long time.
   I would appreciate any help. I am trying to customize a plugin for my needs and
   pass a variable called $amount between two functions in my functions.php I would
   contact the owner of the plugin but he is very unresponsive. The problem is the
   second function isn’t getting the updated $amount that is created due to the 
   if conditions. My understanding is that it is because it is a local variable.
   What is the best way to pass this variable? See the code below.
 *     ```
       function A( $run_this, $mycred, $request ) {
           if ( $run_this['ref'] == 'publishing_content' ) {
   
       		// Original amount (I will change this)
       		$amount =  $request['amount'];
   
                if(isset($_POST['term_id']))
             {
       		// If 74
       		if ($_POST['term_id'] == '74' ){
       			$amount = -50;
                       }
                     	// If 75
       		elseif ($_POST['term_id'] == '75' ){
       			$amount = -75;
                       }
   
                      // Re-add the new value (Amount gets updated. Good)
                       $run_this['amount'] = $amount;
             }
         }
                         return $run_this;
       }
   
       function B( $reply, $request, $mycred ) {
            if ( $reply === false ) return $reply;
   
            // I NEED THE NEW AMOUNT HERE. NOT ORIGINAL
              $amount =;
   
            return $reply;
       }
       ```
   

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Giancarlo Mosso](https://wordpress.org/support/users/gmosso/)
 * (@gmosso)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/help-with-passing-variable-between-functions/#post-7563203)
 * Hello [@learntodesign](https://wordpress.org/support/users/learntodesign/),
    
   the problem is the one you figured out, $amount is a local variable in both functions,
   so $amount in function A and $amount in function B are two different variables
   that are not accessible outside of the two functions. To share the value between
   them you have to put this declaration: `global $amount;` at the beginning of 
   both function A and function B. Then you must be sure that function A is called
   before function B. But keep in mind that using global variables should be avoided
   because it creates hidden dependencies in your code (e.g. here you must remember
   that function A must be called before function B). It would be better that function
   A were explicitly called from function B. However if you can’t have a better 
   structure for your code it’s fine, with the global declaration it will work. 
   Another tip: the two functions should be named with a more explicative name. 
   Giancarlo
 *  Thread Starter [learntodesign](https://wordpress.org/support/users/learntodesign/)
 * (@learntodesign)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/help-with-passing-variable-between-functions/#post-7563300)
 * Hi Giancarlo, thanks for the kind tip and reply. I wound up avoiding the use 
   of global variables by simply reinstating the conditions for the amount in the
   second function as well. Thanks again

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Help with passing variable between functions’ is closed to new replies.

## Tags

 * [pass](https://wordpress.org/support/topic-tag/pass/)
 * [php](https://wordpress.org/support/topic-tag/php/)
 * [variable](https://wordpress.org/support/topic-tag/variable/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [learntodesign](https://wordpress.org/support/users/learntodesign/)
 * Last activity: [9 years, 10 months ago](https://wordpress.org/support/topic/help-with-passing-variable-between-functions/#post-7563300)
 * Status: not resolved

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