How to Call a PHP File From HTML or JavaScript

As a web developer, you may have faced the situation where you need to call a PHP file from an HTML page.

This can be achieved by using JavaScript or jQuery.

The advantage of using this method is that it can be done without refreshing the page, making it a more user-friendly experience.

In this tutorial, we will go over how to call a PHP file from HTML or JavaScript and some code examples to help illustrate the process.

Prerequisites

Before we start, it’s important to understand that you need a web server running PHP to run PHP files.

If you don’t have a web server setup, you can install a local web server like XAMPP to run the PHP files on your computer.

Calling a PHP File from HTML

One of the simplest ways to call a PHP file from HTML is to use an iframe.

An iframe is an HTML tag that allows you to embed another HTML page within the current page.

To call a PHP file from HTML using an iframe, simply add the following code to your HTML page:

<iframe src="yourfile.php"></iframe>

You can also specify the height and width of the iframe by adding the height and width attributes.

Calling a PHP File from JavaScript

To call a PHP file from JavaScript, you can use the XMLHttpRequest object.

This object allows you to make HTTP requests from the client side without refreshing the page.

Here is an example of how you can use the XMLHttpRequest object to call a PHP file from JavaScript:

var xhr = new XMLHttpRequest();
xhr.open('GET', 'yourfile.php', true);
xhr.onreadystatechange = function() {
  if (xhr.readyState == 4 &amp;&amp; xhr.status == 200) {
    document.getElementById("result").innerHTML = xhr.responseText;
  }
};
xhr.send();

In this example, the XMLHttpRequest object is first created, and then the open method is used to specify the type of request (GET), the URL of the PHP file (yourfile.php), and whether the request is asynchronous (true).

The onreadystatechange function is then used to check the status of the request.

If the request is successful (xhr.status == 200), the response from the PHP file is added to an HTML element with the id of “result”.

You can also use jQuery to call a PHP file from JavaScript. Here is an example of how to use jQuery to call a PHP file:

$.ajax({
  type: 'GET',
  url: 'yourfile.php',
  success: function(response) {
    $('#result').html(response);
  }
});

In this example, the $.ajax method is used to make a GET request to the PHP file.

If the request is successful, the response from the PHP file is added to an HTML element with the id of “result”.

Conclusion

In this tutorial, we covered how to call a PHP file from HTML or JavaScript.

We went over how to call a PHP file from HTML using an iframe and how to call a PHP file from JavaScript using the XMLHttpRequest object or jQuery.

I hope this tutorial helps you in your web development journey.

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