使用Java确认对话框破坏PHP代码？

Question

I have PHP scrip that goes like this:

if ($cost_frm < $cost){
     echo "<script type='text/javascript'>
     var r = confirm('Input cost is lower than original. Sure?'));
     If (r==true){
            } else{
                            *** BREAK PHP SCRIPT ***
                           }
             </script>";
 }

And I'd like to stop ejecuting the script (or doing anything else) if the user clicks Cancel. Any tip?

Answer 1

You can't! PHP is server side, javascript is client side

Answer 2

为什么不将整个验证都放入javascript中呢？

Answer 3

好吧，我想如果不是将整个脚本分解为可以使用Ajax激活的段，而不是运行整个脚本，则可以满足您的需要。

Answer 4

You can't do that because the PHP is going to finish processing before the JavaScript runs.

PHP runs completely on the server, and only when it is done does it send the output to the browser, which then processes it. So by the time that box pops up, everything will be done.