CODEWITHSUNDEEP
phpjavascript
Bilal
Bilal

Reputation: 265

Execute particular code on confirmation of user but confirm box must be activate during the php code not onsubmit form

After validating user data from database I want to update some values in the Database using php code.

I have tried 

var answer = confirm("Do you want to Checkout?");
if(answer==true)
{
<?php MY UPDATE COMMAND ?>
}

but update command execute even if answer==false

Please help me in solving my problem.

Thanks

Upvotes: 0

Views: 515

Answers (3)

alanmanderson
alanmanderson

Reputation: 8200

javascript is a client side program (in this case) which is ran within a clients browser. Php is a Server side scripting language. Basically php generates an html file and sends it to the client. All php commands are executed before anything happens in javascript because php simply generates an html file. The javascript is loaded in the clients browser.

So the php command will ALWAYS run because it is being called. PHP has no idea that it is surrounded by javascript code and does nothing to read it. It just includes the javascript code in the html file that it sends along.

Upvotes: 0

Igor Popov
Igor Popov

Reputation: 998

Here are solutions for you:

1st - use AJAX. As for example with help of jQuery:

if (confirm('Do you want to Checkout?')) {
  $.ajax({
    url: 'logout.php'
  }).done(function(){
    // do something after php checkout, for example: go to home page
    window.location.href = '/';
  });
}

2nd - is to use links like this:

<a href="checkout.php"
   onclick="return confirm('Do you want to Checkout?')">
Checkout</a>

Upvotes: 1

MrCode
MrCode

Reputation: 64526

That can't work because PHP executes on the server side, before any javascript is even sent to the browser. So what will happen is your MY UPDATE COMMAND will execute first, before the Javascript - which is executed client side in the browser.

If you want to execute some PHP if the confirm is true then you will need to submit a form, or do an AJAX call at that point. I suggest reading up on how PHP and Javascript execute.

Upvotes: 0

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