Run php function with onclick

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2

I want to know how I can run a php function with the onclick event on an element a, taking as an example:

<a href="">Teste onclick</a>

And the function:

function testeOnclick() {

echo 'Bem vindo ao SOpt';

}
php html onclick

  • Use ajax friend.

  • 1

    possible duplicate of How to run PHP file from Javascript function?

  • 2

    @Guilhermenascimento The question is really similar, but I don’t think it’s about to be closed as a duplicate. Given that my question is more direct (as it already has very objective answers as well) and could help both new users and someone who has a lesser knowledge in the subject, and who managed to solve my problem with the answers from here, and not from there.

  • @GWER The duplicate does not invalidate your question, just links both questions, I personally think the answer of rray would rather solve your problem. :)

3 answers

6

What you can do is this:

<a href="pagina.php?id=1">Teste onclick</a>

Ai in PHP do so:

<?php

if(isset($_GET['id']) == 1){

 testeOnclick();
}

?>

It would be a simple way to do it, but searching for Json/Ajax with PHP does it but in a way that you don’t need to refresh the page.

  • Thanks for the reply, really it is a MUCH simpler way to do, worth updating the page! Anyway thanks. ;)

4


You will have to use Ajax. Assuming that the php file containing your function is called "meuajax.php", using jQuery, you can use:

function chamarPhpAjax() {
   $.ajax({
      url:'meuajax.php',
      complete: function (response) {
         alert(response.responseText);
      },
      error: function () {
          alert('Erro');
      }
  });  

  return false;
}

So on your link:

 <a href="" onclick="return chamarPhpAjax();">Teste onclick</a>

Your file "meuajax.php":

function testeOnclick() {
    echo 'Bem vindo ao SOpt';
}

testeOnclick();

2

If possible, you should create the routine in Javascript, but if there is no other way, you should run the PHP function in two ways:

to) Creating a PHP file that runs the function, and when the person clicks, redirect to the file that executes the action and does what has to be done next.

b) Create a PHP file that calls functions using the call_user_func method and make an ajax request to access it, as in the following example:

Javascript code (jQuery):

$(document).on('click', 'a', function(e){
    $.post('execute.php', {fuction: 'helloWorld'}, function(response){
        console.log(response);
    });
});

PHP code:

<?php
// execute.php

function helloWorld(){
   echo 'Olá Stackoverflow! :)';
}

call_user_func($_POST['function']);
?>

  • Thank you for the reply!

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