In this post, we will understand the differences between PHP and JavaScript −
JavaScript
- It helps work with frond end as well as back end
- It is asynchronous, which means it doesn't wait for the input and output operations.
- It can be run in browsers and since 'Node' has been released, JavaScript can also run be run on the command line.
- It can be combined with HTML, AJAX and XML.
- It is a single threaded language which is event-driven. This means it doesn't block everything and runs concurrently.
- The statements are placed within the <script> and </script> tags.
- These tags can be present anywhere within the webpage, but it is recommended to keep them within the <head> tags.
- The <head> tag tells the browser to start the interpretation of text within these tags as JavaScript code.
A sample JavaScript code −
Example
<!DOCTYPE html>
<html>
<body>
<h2> JavaScript code</h2>
<script>
var n;
n=2;
for(var i=0; i<n; i++){
document.write("Hi " +"<br>");
}
</script>
</body>
</html>Output
JavaScript code Hi Hi
PHP
- It can be written in HTML code, as well as within the .php file.
- PHP requires a server to run.
- XAMPP or a local server application can be installed to run PHP.
- The code in PHP starts with <?php and ends with ?>.
- This tells the server that PHP code begins here.
A sample PHP code −
Example
<!DOCTYPE html>
<html>
<body>
<h1>PHP Code </h1>
<?php
$str= "Hi";
$x = 2;
for( $i = 0; $i<2; $i++ ) {
echo ("Hi");
}
?>
</body>
</html>Output
Hi Hi
Conclusion
In this post, we understood about the significant differences between PHP and Javascript.