php - Prevent infinite loop on update function that updates itself? -


i'm using drupal 7 commerce, although doesn't matter think.

there's hook (function) hook_entity_update() called when entity (my shopping cart) updated.

i want recalculate shipping in hook, issue saves entity again once shipping recalculated , calls hook again, getting me stuck in infinite loop.

what best way solve this?

i thinking of using simple $_session variable, $_session['updating'] , set true @ start of hook, set false again @ end of hook , prevent function running return @ start if variable set true? i'm not sure if solution?

using session variable because it's form , function seems called multiple times when submitting. not sure if regular variable work?

one issue i'm running variable somehow not reset @ end of function , function never called again ...

using session variable seems work. stupid function somehow called 7 times when clicking 1 button ...

added @ start of function:

      // check if entity commerce_order       if ($type != 'commerce_order') {         return;       }        // apply if order still in cart       if ($entity->status != 'cart') {         return;       }        if (isset($_session['bab_checkout']['updating']) &&         $_session['bab_checkout']['updating'] === true) {         return;       }       $_session['bab_checkout']['updating'] = true;

and @ end of function:

  // we're done updating   $_session['bab_checkout']['updating'] = false;

still wonder if there no better solution?


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