Calling a php function by onclick event

Question

I am trying to call a function by  onclick  event of the button  When I do that it shows error message  Can anybody help me out on this so that when I click on the button it should call the function and execute it   My php code is    lt  php     function hello             echo  Hello             echo   lt input type  button  name  Release  onclick  hello    value  Click to Release  gt      gt    What is wrong with this code

User · Answer

The onClick attribute of html tags only takes Javascript but not PHP code. However, you can easily call a PHP function from within the Javascript code by using the JS document.write() function - effectively calling the PHP function by "writing" its call to the browser window: Eg.

onclick="document.write('<?php //call a PHP function here ?>');"

Your example:

    <?php
          function hello(){
              echo "Hello";
          }
    ?>

<input type="button" name="Release" onclick="document.write('<?php hello() ?>');" value="Click to Release">

User · Answer

probably the onclick handler should read onclick  hello     instead of onclick hello

User · Answer

You cannot execute php functions from JavaScript   PHP runs on the server before the browser sees it  PHP outputs HTML and JavaScript   When the browser reads the html and javascript it executes it

User · Answer

Executing PHP functions by the onclick event is a cumbersome task and near impossible   Instead you can redirect to another PHP page   Say you are currently on a page one php and you want to fetch some data from this php script process the data and show it in another page i e  two php you can do it by writing the following code  lt button onclick  window location href  two php   gt Click me lt  button gt

User · Answer

Use this html code it will surely help you   lt input type  button  value  NEXT   onclick  document write   lt  php   call a function here ex-  fun       gt        gt    one limitation is that it is taking more time to run so wait for few seconds it will work

User · Answer

First quote your javascript   onclick  hello       Also you can t call a php function from javascript  you need    lt script type  text javascript  gt  function hello     alert   hello       lt  script gt

User · Answer

onclick event to call a function     lt strike gt   lt input type  button  value  NEXT   onclick  document write   lt  php   call a function here ex-  fun       gt        gt      lt  strike gt    it will surely help you   it take a little more time than normal but wait it will work

User · Answer

In Your HTML   lt input type  button  name  Release  onclick  hello     value  Click to Release    gt    In Your JavaScript   lt script type  text javascript  gt      function hello            alert  Your message here           lt  script gt    If you need to run PHP in JavaScript You need to use JQuery Ajax Function    lt script type  text javascript  gt  function hello          ajax          type      post    url       folder my php file php    data       amp id         id   val       amp name             name   val     dataType   json      alert data    success  function data          alert data                lt  script gt    Now in your my php file php file   lt  php      echo  hello     gt    Good Luck

[php] Calling a php function by onclick event

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