How do I run PHP code when a user clicks on a link

Question

I want to have a page run some PHP code when a user clicks on a link  without redirecting them  Is this possible with    lt a href    gt  lt  a gt    or with the javascript onclick event

User · Answer

As others have suggested  use JavaScript to make an AJAX call    lt a href     onclick  myJsFunction    gt whatever lt  a gt    lt script gt  function myJsFunction             use ajax to make a call to your PHP script         for more examples  using Jquery  see the link below      return false     this is so the browser doesn t follow the link     http   docs jquery com Ajax jQuery ajax

User · Answer

You cant run PHP when a user clicks on a link without leaving the page unless you use AJAX  PHP is a serverside scripting language  meaning the second that the browser sees the page  there is no PHP in it   Unlike Javascript  PHP is ran completely on the server  and browser wouldn t know how to interpret it if it bit them on the rear  The only way to invoke PHP code is to make a Page request  by either refreshing the page  or using javascript to go fetch a page   In an AJAX Solution  basically the page uses javascript to send a page request to another page on your domain  Javascript then gets whatever you decide to echo in the response  and it can parse it and do what it wants from there  When you are creating the response  you can also do any backend stuff like updating databases

User · Answer

There is the only better way is AJAX as everyone is suggest in their posts  The alternative is using IFrames like below    lt iframe name  f1  id  f1  gt   lt  iframe gt    lt a href  yourpage php  target  f1  gt Click  lt  a gt    Now you will get the output in IFrame  you can place IFrame wherever you need in the page or event hide it and the result from the script    Hope for non Ajax solution this is better

User · Answer

either send the user to another page which does it   lt a href  exec php  gt Execute PHP lt  a gt    or do it with ajax   lt script type  text javascript  gt      lt   CDATA      document getElementById  link   onclick   function                call script via ajax            return false              gt   lt  script gt       lt a href     id  link  gt Execute PHP lt  a gt

User · Answer

I know this post is old but I just wanted to add my answer   You said to log a user out WITHOUT directing    this method DOES redirect but it returns the user to the page they were on  here s my implementation      every page with logout button  lt  php            get the full url of current page          page     SERVER  PHP SELF               find position of the last              file name begin pos   strripos  page                   get substring from position to end           file name   substr  page     fileNamePos           gt      the logout link in your html  lt a href  logout php redirect to  lt    file name  gt   gt Log Out lt  a gt      logout php page  lt  php     session start          SESSION   array        session destroy         page    index php       if isset   GET  redirect to               file     GET  redirect to            if   file     user php                   if redirect to is a restricted page  redirect to index              file    index php                       header  Location   file      gt    and there we go   the code that gets the file name from the full url isn t bug proof  for example if query strings are involved with un-escaped     in them  it will fail   However there are many scripts out there to get the filename from url   Happy Coding   Alex

User · Answer

Yeah  you d need to have a javascript function triggered by an onclick that does an AJAX load of a page and then returns false  that way they won t be redirected in the browser   You could use the following in jQuery  if that s acceptable for your project    lt script type  text javascript  src  jquery min js  gt  lt  script gt   lt script type  text javascript  gt  function doSomething           get  somepage php        return false     lt  script gt    lt a href     onclick  doSomething     gt Click Me  lt  a gt    You could also do a post-back if you need to use form values  use the   post   method

User · Answer

This should work as well   lt a href     onclick  callFunction     gt Submit lt  a gt    lt script type  text javascript  gt   function callFunction        lt  php require  functions php       gt     lt  script gt    Thanks   cowtipper

User · Answer

Well you said without redirecting  Well its a javascript code    lt a href  JavaScript void 0    onclick  function    gt Whatever  lt  a gt    lt script type  text javascript  gt  function confirm delete         var delete confirmed confirm  Are you sure you want to delete this file          if  delete confirmed  true              the php code    can t expose mine           else              this one returns the user if he she clicks no           document location href    whatever php            lt  script gt    give it a try    hope you like it

User · Answer

If you haven t yet installed jquery  because you re just a beginner or something   use this bit of code    lt a href     onclick  thisfunction    gt link lt  a gt    lt script type  text javascript  gt  function thisfunction        var x   new XMLHttpRequest        x open  GET   function php  true       x send        return false     lt  script gt

[php] How do I run PHP code when a user clicks on a link?

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