javascript and PHP

jacinthe

Hi everyone,

i have a javascript function and a php function :

<?
function testphp()
{
$test = "n";
echo $testl
}
?>
<script language="JavaScript">
<!--

function testjv()
{
document.write("Hello World 🙂 ");
testphp();
document.write($test);
}

//-->
</script>

And i'd like to execute php code into that function how can i do that? Everything i've tried haven't work yet. Like calling testphp() from testjv() doesn't work...

When the function testjv() is called, i want to execute a mysql query and for that i want to use php fonctions and all...

thanx in advance!

Jacinthe

[deleted]

Javascipt is clientside, PHP is serverside.

On the server PHP is used to make an html page. That page is sent to the client (your browser) if there is javascript in the page, your browser will execute the javascript.

lawnmowerman

If you want PHP to generate code which will execute on the client, you'll have to write PHP code which outputs JavaScript, and in your case, a JavaScript function.

PHP is only executed on the server while Javascript is only exeucted on the client and never the two shall meet 🙂

-Rich

jacinthe

i know that,
i just don't know if
1) its possible to make both interact the way i want and
2) if it is possible, how.

Jacinthe

Anon

Umm, javascript functions cannot call PHP functions. Javascript is client side which means it gets run on the users computer. PHP is server side which means it gets run by the webserver. Another way of putting it, by the time the javascript gets a chance to run, the php is already done.

What you CAN do is make "dynamic" Javascript customized to different users for example. In that case the PHP would output javascript like this...

<head>
<?

$user = HTTP_POST_VARS["user"];

print "<script language = javascript>";

print "function greetUser(){";
print " alert('Hello " .$user."');";
print "}";

print "</script>";

?>
</head>
<body onload="greetUser();">
This is the body text.

</body>

This will give a different javascript greeting depending on who the user is.

Drew.

Anon

Oops I did not realize other people had responded to this question already... I think most of what I just said is redundant. But maybe the example will help you....

[deleted]

No.

The only way to make javascript 'interact' with php is by making javascript submit data to a php script.

jacinthe

Yep it did thanx 🙂