arrays shared by javascript and php

Anon

Hello,

It is possible to share an exsisting array created for javascript? like:

Then have php read the array, or do the reverse php to javascript.

for($i=0; $i<array_num ; i++){
print("$array_cd_var");
}

Thanks
Patrick H

Anon

The reverse is possible because PHP can send the information to the client. However Javascipt talks to the browser only and is not capable of sending data back to the server. Remember:

Javascript: Client side. Is run and has variables only on the users Computer
PHP: Server side. Is run on the server but can send data (via http) back to the client. Javascript could be included. It doesnt recoginize a "language" (like html or javascript) just that it is sending back text

Hope this Helps!

Anon

Nashirak is right. But he didn't tell you how to do it, and I'm thinking thats what you wanted.

you just have to loop through the PHP array and print it out as HTML/javascript.

<? php
Print ("
<script language="JavaScript">
var array_cd_var =
new Array(");

$myarray=array("1", "2", "3", "4", "5", "7", "8");

$i=0;
while (list($k,$v) = each($myarray)) {
print ("\"$v\"");
$i++;
if ($i<>count($myarray)) print (", ");
}

print (");
</script> ");

or something like that. ;-)

tomhath

If you want to go from Javascript to php you could store the values in hidden form fields and POST the form. That's kind of ugly but it would work.

There are other ways involving XML, but on public sites you can't assume the browser will have the support you need.

Anon

<? php
Print ("
<script language="JavaScript">
var array_cd_var =
new Array(");

$myarray=array("1", "2", "3", "4", "5", "7", "8");

$i=0;
while (list($k,$v) = each($myarray)) {
print ("\"$v\"");
$i++;
if ($i<>count($myarray)) print (", ");
}

print (");
</script> ");

?>

So from my understanding is that if I start with a array in PHP then print is out on the page as a javasript array then the javascript will use the "same" or "shared" arrays, correct? I think this is what you have sayed above. Thanks All!

Anon

yep. that's right...

BUT

If you then want it back, that is harder. You would have to use javascript to populate form fields (as tomhath said) and then retrieve the info when the form is posted.