PHP: How to prevent data from being saved twice

Question

I want to prevent comment from being saved twice, so I write those code, but it won't work as my expectation. Anyone helps me? Really appreaciated. THX

if( isset($_SESSION['ADDING']) ) {
    jsAlert("adding now, please wait");
}

$_SESSION['ADDING'] = 1;

saving_data();
jsAlert("finish");

unset($_SESSION['ADDING']);

It doesn't work, so what does it do? Why wouldn't saving_data be run twice? You are not calling it in the if statement? — Antony D'Andrea, Jun 03 '15 at 08:32
I think in your jquery you need to stop form submission twice. — Alive to die - Anant, Jun 03 '15 at 08:34
I find my answer in this post: http://stackoverflow.com/questions/2133964/how-to-prevent-multiple-inserts-when-submitting-a-form-in-php anyway, thx for all helps. — yip, Jun 04 '15 at 08:35

score 0 · Answer 1 · answered Jun 03 '15 at 08:40

0

Try this: You have to run your saving_data(); function inside if

if( isset($_SESSION['ADDING']) ) {
    jsAlert("adding now, please wait");
   saving_data();
   $_SESSION['ADDING'] = 1;
   jsAlert("finish");
  unset($_SESSION['ADDING']);
}

answered Jun 03 '15 at 08:40

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PHP: How to prevent data from being saved twice

1 Answers1