How can a PHP function be triggered when a user clicks on a button?

To trigger a PHP function when a user clicks on a button, you can use AJAX to send a request to a PHP script that contains the function you want to execute. This way, the function will be triggered without the need to reload the entire page. 

// HTML button that triggers the PHP function
<button id="triggerFunction">Click me</button>

// JavaScript code to send AJAX request when the button is clicked
<script>
document.getElementById('triggerFunction').addEventListener('click', function() {
  var xhr = new XMLHttpRequest();
  xhr.open('GET', 'function.php', true);
  xhr.send();
});
</script>

// PHP script (function.php) that contains the function to be triggered
<?php
function myFunction() {
  // Your PHP function code here
}
myFunction();
?>

Keywords

PHP function button click event event listener

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