Js变量进入php调用

Question

Im trying to move Js variable into php , simply put var i instead of const 4

                            var  ntime = '<?php echo count($czasAr);?>';
                            for (var i = 0; i < ntime; i++) {
                                alert('<?php echo $czasAr["4"];?>');        
                            };

I have tried

<script>document.write(i)</script>

but it didn't work, alert was empty. any ideas?

Answer 1

You can't move a client-side language variable to a server-side language like PHP directly for security reasons. That would be the end of the internet as we know it.

What you can do is for example do a GET request to the same page that contains a PHP script which will get the variable from the request. For example

JS part:

var yourVariable = "lorem";
document.location = "/theSamePage.php?variable=" + yourVariable;

PHP part:

$passedVariable = $_GET['variable'];
echo $passedVariable;

Or you can do a form for example which will handle this.