Executing javascript from within a php file

Question

I have to execute javascript that's written inside a .php file. I do understand that javascript is client side and php is server side language and I'm not supposed to be doing this but that's the project guidelines and hence I have to do it.

Issue: Whenever I load my php file from localhost( I'm using Apache on Mac), the javascript functions do not work. I know the code is correct as it works fine when the same js code is within an html file. I have tried writing js code in <script>.....</script> and <?php echo" <script>...</script>"?> but neither seem to work and I'm not permitted to use JQuery either. Entire code has to be within one php file. I have searched throughout stack overflow and all I have seen so far is to use <script>.....</script> and <?php echo" <script>...</script>"?> and they're not working. The html and css in the same file work properly.

Any help on how to solve is much appreciated. Thank you!

Answer 1

Think this is what you are looking for: How to call a JavaScript function from PHP?

PHP file is server side yes, so is Javascript depending on what you are doing with it. PHP can absolutely execute a Javascript script within its main .php file. You just can not include anywhere in your program like before.

Below is an example to run a Javascript script that simply alerts the browser to the string "pong". Notice how the PHP statement is still executed.

We could be more helpful if you posted the full code and were very efficient and detailed explaining what you needed to be answered.

Copy and paste this code into a PHP file by itself, so you can test without any errors your full code might contain: index.php

<?php
    echo 'Ping' ?>
<script>alert('Pong');</script>


<?php
    // PHP code goes inside here
?>
<script>
   // Javacript code goes inside here
</script>