Parsing Javascript Variable into php query - php

Question

I am newbie in php and still learn javascript function.
I have a problem with, include javascript variable into php query.
I want to create transaction code according count of part code which have different type. then i must get value with count.
<script language="javascript" type="text/javascript">
function getCode(){
var v =document.forms["form1"]["part_code"].value;
<?php
$query = mysql_query("SELECT COUNT(*)+1 as count FROM TB_TRANSACTION where part_code = "<script>v;</script>"");
$i=-1;
while ($code_part = mysql_fetch_array($query))
{
$i++;
?>
var getPartCode = <? echo $code_part['count'];?>;
var x = document.forms["form1"]["part_code"].value;
var y = document.forms["form1"]["location_code"].value;
var z = document.forms["form1"]["date"].value;
var a = (getPartCode + '/'+x +'/'+ y +'/'+ z);
document.forms["form1"]["invent_code"].value = a;
<?
}
?>
</script>
The result like that 1/CPU/JKT/2013
I call that function with button onClick="getCode()" no submit.
Anyone can help me.

Answer 1

You can't do it by the way you tried.There are two better ways to do it
Use Ajax.
Use Cookies
The best way here is to use Ajax. Here, iam using javascript and ajax.And i am creating a new file to create response(say newfile.php) Try this,
function getCode(){
var v =document.forms["form1"]["part_code"].value;
var x = document.forms["form1"]["part_code"].value;
var y = document.forms["form1"]["location_code"].value;
var z = document.forms["form1"]["date"].value;
var xmlhttp;
if (window.XMLHttpRequest)
{ // code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{ // code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
var getPartCode=xmlhttp.responseText; //Getting the response from php file
var a = (getPartCode + '/'+x +'/'+ y +'/'+ z);
document.forms["form1"]["invent_code"].value = a;
}
}
xmlhttp.open("GET","newFile.php?q="+v,true); //Sending request to newfile.php
xmlhttp.send();
}
</script>
newfile.php
<?php
$value = $_GET["q"]; //getting the value sent through tthe ajax request
$query = mysql_query("SELECT COUNT(*)+1 as count FROM TB_TRANSACTION where part_code = '$value'");
$i=-1;
while ($code_part = mysql_fetch_array($query))
{
$i++;
echo $code_part['count'];
}
?>

Answer 2

Best Method is Ajax
Otherwise Use Cookies
For Eg:
<script type="text/javascript">
document.cookie = "cookieName=cookieValue";
</script>
<?php
$phpVar = $_COOKIE['cookieName'];
echo $phpVar;
?>
Your code
<script language="javascript" type="text/javascript">
function getCode(){
var v =document.forms["form1"]["part_code"].value;
document.cookie = "cookieName="+v;
<?php
$phpVar = $_COOKIE['cookieName'];
$query = mysql_query("SELECT COUNT(*)+1 as count FROM TB_TRANSACTION where part_code = '$phpVar'");
$i=-1;
while ($code_part = mysql_fetch_array($query))
{
$i++;
?>
var getPartCode = <? echo $code_part['count'];?>;
var x = document.forms["form1"]["part_code"].value;
var y = document.forms["form1"]["location_code"].value;
var z = document.forms["form1"]["date"].value;
var a = (getPartCode + '/'+x +'/'+ y +'/'+ z);
document.forms["form1"]["invent_code"].value = a;
<?
}
?>
</script>
Updated
Check this
function getCode(){
var v = 12;
document.cookie = "cookieName="+v;
var getPartCode = <?php echo $_COOKIE['cookieName']; ?>
alert(getPartCode);
}