How to Execute PHP Functions from Onclick Events?-JS Tutorial-php.cn

How to Execute PHP Functions from Onclick Events?

Barbara Streisand

Release： 2024-10-18 21:17:03

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How to Execute PHP Functions from Onclick Events?

Executing PHP Functions with Onclick Events

Original Question:

Can I call a PHP function only when an anchor tag is clicked?

PHP and HTML Code Provided:

<code class="php">function removeday() { /* Code here */ }</code>

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

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Understanding the Language Interplay

To clarify, PHP and JavaScript are distinct languages with specific roles:

PHP runs server-side, responding to requests like link clicks or form submissions.
HTML and JavaScript execute in the user's browser.

Executing PHP Functions from Onclick

As mentioned, PHP doesn't execute based on onclick events. To do this, we must use a server request (for example, a GET request using a query string parameter):

<code class="php"><!DOCTYPE HTML>
<html>
<?php
  function runMyFunction() {
    echo 'I just ran a php function';
  }

  if (isset($_GET['hello'])) {
    runMyFunction();
  }
?>

Hello there!
<a href='index.php?hello=true'>Run PHP Function</a>
</html></code>

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Alternative: Asynchronous JavaScript and XML (AJAX)

To avoid refreshing the page when calling PHP functions, AJAX can be employed. This allows for requests to PHP without page reloads. Search "jQuery AJAX" for implementation details.

Recommendation for Newcomers

Consider using Laravel to establish a solid foundation in this area: http://laravel.com/.

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