How To Convert Javascript Variable Value Into Php Variable

February 28, 2024 Post a Comment

I actually need to get count of HTML table rows (). Using JavaScript I have easily got the count of the table rows but now I actually want to use that count in a PHP vari

Solution 1:

Your javascript is in the browser. Your PHP is on the server. To get this count into your PHP on the server, you have several options:

You can make an ajax call to the server and pass the table row count from the browser to your server.
If you are requesting a new page, you can encode the row count in the URL with a URL parameter ?rowCnt=49 on the end of the URL which you would parse out of the URL in your PHP.
If you are just making a straight request of the server which will load a new page, you can also do a Post and send the data with the post (similar to the previous option which is a GET instead of a POST).
If the row count is just in the HTML that was originally generated by your PHP on the server, then you can use some server-side logic to calculate what that rowcnt is using the same logic that generated the page in the first place.

Solution 2:

This will convert js variable to php variable and php variable to js variable

<script>functionjstophp(){


var javavar=document.getElementById("text").value;  

document.getElementById("rslt").innerHTML="<?php$phpvar='"+javavar+"'; 
echo$phpvar;?>";
}

function phptojs(){

var javavar2 = "<?php$phpvar2="I am php variable value";
echo$phpvar2;

?>";
alert(javavar2);
}

</script><body><divid="rslt"></div><inputtype="text"id="text" /><buttononClick="jstophp()" >Convert js to php</button><buttononClick="phptojs()">Convert php to js</button>

PHP variable will appear here:
<divid="rslt2"></div></body>

Solution 3:

I think that you are trying to read the row count in PHP. So you may want to try using a input field for e.g.

Add this to HTML

<inputtype="hidden"id="rowCount"/>

in JS code

<script>var objInputFieldRowCount = docuement.getElemendbyId("rowCount");
var jsRowCount = table.getElementsByTagName("TR").length;
objInputFieldRowCount.value = jsRowCount;
</script>

Solution 4:

I have include a simple object that allows you to send data to a PHP script. The POST in synchronous to keep it simple. I have also includes a simple php script that will read the data.

Baca Juga

var phpSend = phpSend || 
{
    sent: false,
    xmlhttp: null,
    xmlhttpstatus:null ,


    // You would call this function when you need to send your data
    sendInfo: function()
    {

            // Your Datavar tableData = "&tableRowCount=" + yourTableRowCount ;

            // The url where the php file is situatedvar httpstring =  'http://www.mywebsite.com/php/table.php' ;


            phpSend.ContactXMLHttpRequest(httpstring,tableData) ;


            // Check to see if http request for table was OKif(phpSend.xmlhttpstatus == true)
            {
                // Do something here

            }


    },

    ContactXMLHttpRequest: function(url,data)
    {
        if (phpSend.xmlhttp)
        {
            phpSend.xmlhttp.onreadystatechange=phpSend.stateChanged;
            phpSend.xmlhttp.open("POST",url,false);
            phpSend.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
            phpSend.xmlhttp.send(data);
        }
    },

    stateChanged: function()
    {   
        if(phpSend.xmlhttp.readyState==4)
        {
            if (phpSend.xmlhttp.status==200)
            {
                phpSend.xmlhttpstatus = true ;
            }
            else
            { 
                    phpSend.xmlhttpstatus = false ;
            }
        }
    },


    InitXMLHttpRequest: function()
    {
        if (window.XMLHttpRequest)
        {
            // code for IE7+, Firefox, Chrome, Opera, Safarireturnnew XMLHttpRequest();
        }

        if (window.ActiveXObject)
        {
            // code for IE6, IE5returnnew ActiveXObject("Microsoft.XMLHTTP");
        }

        alert ('Your browser does not support XMLHTTP!');

        returnnull;
    }           

} ;

//-----------------------------------------------------------------------------------------------------------------------////  Run on load////-----------------------------------------------------------------------------------------------------------------------
(function()
{   
    phpSend.xmlhttp=phpSend.InitXMLHttpRequest();

})() ;






//-----------------------------------------------------------------------------------------------------------------------////  PHP code that will be sitting on your server (for this example, 'http://www.mywebsite.com/php'  and called 'table.php')////-----------------------------------------------------------------------------------------------------------------------<?php// Pick up the count and do what you need to do$count = $_POST["tableRowCount"]; 
?>

Solution 5:

Best Example convert JavaScript value to PHP:

JavaScript

<scripttype="text/javascript">var ja =50;
</script>

PHP

<?php$dummy = "<script>document.write(ja)</script>";
    echo$dummy; 
?>

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