Use html to call/use php function

Question

I'm having some trouble getting my HTML and php to work together.

I've made a onClick that should run a PHP function i have in the top of the PHP file. But every time i click it, it says: ReferenceError: deleteSub is not defined. Can someone tell me what I've done wrong?

HTML:

<?php
                if(mysql_num_rows($sql_select_delete) > 0){
                     while($row = mysql_fetch_assoc($sql_select_delete)){
                         ?><div class="abo_box">
                           <label class="abo_navn" id="<? echo $row["id"]; ?>"><? echo $row['abo_name'];  ?></label>
                           <label class="delete" onclick="deleteSub();">Delete</label>
                         </div>
                         <?php
                     }
                }
           ?>

PHP:

function deleteSub(){
      echo "deleted";
 }

With onClick, you're calling a JS function not php. You can't do this without a refresh or ajax call. — fdehanne, Mar 31 '15 at 08:12
Okay? I googled it before posting, and found a stackoverflow where this was the "right anwser"(cant find the link agian. sorry). I might have been reading it wrong tho, looks like it. Is there a way to do this then? — Patrick R, Mar 31 '15 at 08:15
http://stackoverflow.com/questions/19323010/execute-php-function-with-onclick — zdeniiik, Mar 31 '15 at 08:18

score 2 · Accepted Answer · answered Mar 31 '15 at 08:18

You can't call directly a PHP code like this What you can do is to create a javascript function and you need to use Ajax witch will send a request to your re server and here you can call your PHP function Remember : PHP is server side code and HTML, JS is client side code, the only way to make them work together is using HTTP requests.

score 0 · Answer 2 · answered Mar 31 '15 at 08:20

you could do something like this. But to use server side information you should use AJAX and http requests. This example is just for changing DOM elements.

 <p id="demo" onclick="myFunction()">Click me to change my text color.</p>

<script>
function myFunction() {
    document.getElementById("demo").style.color = "red";
}
</script>

Use html to call/use php function

2 Answers2