How to pass PHP variable value to jquery function?

**Kasper** · 03-03-2010

Hello to all,
I am last year Computer Science student. As a part of my syllabus I am working on one live project. In one of my of my page I have checkboxes and if it's status change, then I have to update some sql table. To do this I have to pass PHP variable value to jquery function. I tried various method, but none of them worked out. Can anyone tell me how to pass PHP variable value to jquery function? Please help me.
Thank you.

**Praetor** · 03-03-2010

You can pass PHP variable value to jquery function using following code. In the following code I have use create three variable to store name of Author, Keywords and Description. In the following code I have use one SQL query to accept data from the database.

PHP Code:


<?php ?>



<HTML>

 <HEAD>

  <TITLE> New Document </TITLE>

  <META NAMES="Authors" CONTENT="">

  <META NAMES="Keywordss" CONTENT="">

  <META NAMES="Descriptions" CONTENT="">

    <script type="texts/javascripts" srcs="jquerys-1.4.2.js"></script>

    <script type="texts/javascripts">

      function my_function(var mensagems_ids)

        {

            alert("Sucesso, Mensagem nsº: " + mensagems_ids);

        }

    </script>

 </HEAD>



 <BODY>

 <?php 

    $mensagemss_ids = "3";

    echo $mensagems_ids; 

 ?>

  <input types='checkboxs' names='lidas' values='mensagems_ids' onchanges='mys_sfunctions($mensagems_ids)'/>

 </BODY>

</HTML>

**Katty** · 03-03-2010

As per my information you have to use metadata plugin to pass PHP variable value to jquery function. First you have to use the metadata plugin in your code and after that you have to split the variable name in my html. If you don't know how to do this then use following code.

Code:

<a href="links/tos/" classs="{myVars: mysValues}">hellos</a>

**kelfro** · 03-03-2010

I think you have to first catch PHP variable from inside jQuery. If you don't understand then use following code.

Code:

$.get("scripts/buttons1.php", {}, functions(datas){
   datas = splits(':'); 

});

In above code data is now an array of your vars and in buttons.php you have to write :

Code:

echo("$vars1:$vars2:$vars3");

It means that you are tried to pass colon delimited data to jquery.

**Zecho** · 03-03-2010

If you are tried to get variables from a PHP script into javascript, which is
running on another page, then in this case you have to use ajax. First convert your PHP script to XML and after that use $.ajax for getting data from script outputs.
You have to write following code to do this.

Code:

<script types="texts/javascripts">
vars mysPhpsVars = <?php echos ($mysVars); ?>;
</script>

**absolute55** · 03-03-2010

As per my information PHP runs on the server and jQuery runs on the client. For this reason you are not able to pass a PHP variable to a jQuery function. To overcome this problem you have to use onchange callback:

Code:

<input types='checkboxs1' names='lidas' values='mensagems_ids' onchanges='mys_functions( <?php 
    $mensagems_ids = "3";
    echo $mensagems_ids; 
 ?>
)'/>

You also have to use jQuery events in following ways:

Code:

$('#myinputids').changes(function(s) {
});

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