Javascript php variable

<script type="text/javascript">
   var php_var = "<?php echo $php_var; ?>";
</script>

Js var to php

<script>
   var res = "success";
</script>
<?php
   echo "<script>document.writeln(res);</script>";
?>

Source: tutorialspoint.com

Using js variable in php

<script type="text/javascript">
var abc= 'this is text';
<?php $abc = "<script>document.write(abc)</script>"?>   
</script>
<?php echo $abc;?>

Source: stackoverflow.com

How to use javascript variable in php

<script>
var p1 = "success";
</script>

<?php
echo "<script>document.writeln(p1);</script>";
?>

Source: stackoverflow.com

Javascript in a php variable

//this is my code 

$value = <<<data
       <!--instead of writing data we can name it anything 
       as long as we close it with the same name, 
       and that name must not be a keyword in javascript -->

        <script>
         document.write("hello world");
        </script>
       data;

so the php variable $value will not store the string "hello world" inside it,
so the php variable is just a temporary container for the javascript code and nothing else,
and if we echo the vairable like this:-
  
echo $value;
then hello world will be printed in the browser page,
and it is the same as using echo to excute a javascript code, so it is as:-
  
echo "<script>document.write(\"hello world\")</script>"
  
  
  
//using console instead of document.write
  
$value = <<<inConsole
        <script>
         console.log("hello world");
        </script>
       inConsole;


but the value will not be printed in the console unless we echo the variable, 
like this:-

echo $value
then hello world will be printed in the console
  
  
  
//other examples such as storing data to localstorage
  
$local = <<<localstorage
        <script>
         localStorage.setItem("anything", "hello");
        </script>
        localstorage;


but this code will not work until we echo the variable such as:-
echo $local

and if we open the console and write localstorage then the item anything
with its value hello will appear
  
  
  
  
  
  
and if we want to remove the item from localstorage then use this code:-

$local = <<<localstorage
        <script>
         localStorage.removeItem("anything");
        </script>
        localstorage;

        echo $local;

note: never forget to use the echo statement or the code will not work
  
  
  
  
and if we want to get data from localstorage, we use this code

$local = <<<localstorage
        <script>
         let a = localStorage.getItem("anything");
         document.write(a);
        </script>
        localstorage;

        echo $local;

then the value of the varaible a will be print in the webpage,

Source: stackoverflow.com

Similar codes

85 votes291 views6 answers
Php replace string
PHP
0 vote252 views1 answer
Delete image s3 laravel
PHP Laravel
0 vote234 views1 answer
Php href variable in javascript alert
PHP
0 vote241 views1 answer
How to uninstall php 8 in windows 10
PHP
0 vote240 views1 answer
Laravel env asset_url
PHP
5 votes248 views5 answers
Group by laravel
PHP Laravel
0 vote250 views1 answer
Laravel form old value array
PHP
0 vote553 views1 answer
Envoyer mail php depuis localhost
PHP
0 vote376 views1 answer
Wordpress Simple Membership button name
PHP Wordpress
0 vote273 views1 answer
Laravel collection pop
PHP Laravel