How Can I Execute a PHP Function When an HTML Button is Clicked?

Executing PHP Functions on Button Click

Calling PHP functions upon clicking on an HTML anchor tag is a simple task.

Code Structure

To achieve this, you need three different entities:

1. PHP Script: Contains the removeday() function.
2. HTML: Defines the anchor tag with onclick handler.
3. Request to PHP Script: Initiated by the button click to execute the function.

HTML and PHP in Same File

In the scenario where HTML and PHP code reside in the same file, follow these steps:

• Create a hyperlink for triggering the function:

<a href="" onclick="removeday()" class="deletebtn">Delete</a>

• When the button is clicked, it will trigger the onclick event and initiate a request to the PHP script.

Understanding Server and Client-Side Processing

PHP functions are executed on the server-side, while HTML and JavaScript run in the client-side browser. The anchor tag's onclick handler initiates a request to the PHP script, which then processes the function and responds accordingly.

AJAX for Non-Refreshes

If you want to avoid page refreshes, consider using Asynchronous JavaScript and XML (AJAX) to make requests to PHP without refreshing the page. Look up "jquery ajax" for more information on this technique.

Security Considerations

PHP functions respond only to requests, such as button clicks or form submissions. This provides a level of security, allowing the server to control which scripts to run.

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