July 10, 2011
How to use a php code in javascript
Question by Javad Yousefi
I want to use php code in javascrip ,but it dosn’t work:
<script type="text/javascript">
function edit(pollNo)
{
<?php
$result = mysql_query( 'CALL ret_poll('.pollNo.')' );
$row = mysql_fetch_assoc($result);
echo 'document.poll.pollTitle.value='.$row['title'];
?>
}
</script>
Answer by Starx
Javed, its not that you can’t use php in javascript. However the uses are very limited.
See an example
alert('<?php echo "hi"; ?>');
Once the server renders this, the script will be
`alert('hi');` //SO it will alert `hi` now
Mostly, you can use PHP and javascript mixture to create a script you want to run on the run time
For example
<script>
<?php
$location = $_SESSION['logged'] ? 'admin.php' : 'index.php';
?>
window.location('<?php echo $location; ?>');
</script>
Or Something like this
<script>
<?PHP if($test==true) { ?>
function test() {
//do something;
}
<?php } else { ?>
function test() {
//do something else but not the previous one
}
<?php } ?>
</script>
However, What you are trying is TRYING TO USE PHP CODES AS JAVASCRIPT Which is not possible !!!!!!!!
Instead, you can use AJAX, as other answers suggest, for a workaround.
A little demo of your probable solution is
FILE: myMYSQLPROCESSING.php
// Your connections and other above
$result = mysql_query( 'CALL ret_poll('.$_POST['pollno'].')' );
$row = mysql_fetch_assoc($result);
echo $row['title'];
JS
function edit(pollNo)
{
$.post("myMYSQLPROCESSING.php",
{ "pollno" : pollNo },
function(data) {
// Now data, will contain whatever you echo in myMYSQLPROCESSING.php
// May be a success message or error message
// and do whatever you want with the response
document.poll.pollTitle.value=data; //in your case something like this
}
);
}
This is a jQuery code, if you are not familiar with it.
