PHP & JavaScript

[grimz]

Hi all,

Ive been coding my forums and im trying to make a 'preview' button, thing is I have coded a markup language with regular expressions and that converts <> to &lt; and &gt; , to stop html tags.

its called parse_text($string);

I have got this to work:

function preview_data ($field) {
?>
<script language="JavaScript">
function previewDATA(form) {
var open_width = parseInt((screen.availWidth - 370) / 2);
var open_height = parseInt((screen.availHeight - 225) / 2);
var data = form.<? echo "$field" ?>.value;
var OpenWindow = window.open("","preview_popup","top=" + open_height + ",left=" + open_width + ",toolbar=no,scrollbars=yes,status=no,height=250,width=425");
OpenWindow.document.write("");
OpenWindow.document.write("<title>ScriptaZ.com - Preview ...</title>");
OpenWindow.document.write(data);
OpenWindow.document.write("<br><br><br><hr size='1' width='100%'><form><center><input type='button' value='Close This' onClick='window.close();'></center></form><br>");
OpenWindow.document.write("");

	}
	</script>
	<?
}

What im trying to do, is get the JavaScript variable 'data' to be parse_text();'d and then nl2br();'d

But no luck, I tried this:

function preview_data1 ($field) {
	?>
	<script language="JavaScript">
	function previewDATA(form) {
		var open_width = parseInt((screen.availWidth - 370) / 2);
		var open_height = parseInt((screen.availHeight - 225) / 2);
		var unparsed_data = form.<? echo $field ?>.value;
		var parsed_data = <? parse_text(?>unparsed_data<?); ?>;
		var data = <? nl2br(?>parsed_data<?); ?>;
		var OpenWindow = window.open("","preview_popup","top=" + open_height + ",left=" + open_width + ",toolbar=no,scrollbars=yes,status=no,height=250,width=425");
		OpenWindow.document.write("");
		OpenWindow.document.write("<title>ScriptaZ.com - Preview ...</title>");
		OpenWindow.document.write(data);
		OpenWindow.document.write("<br><br><br><hr size='1' width='100%'><form><center><input type='button' value='Close This' onClick='window.close();'></center></form><br>");
		OpenWindow.document.write("");

	}
	</script>
	<?
}

Any ideas?

[vsego]

What?!?!? JavaScript runs on client side (browser), while PHP runs on server. You cannot mix these to! You need to write all functions in JavaScript (both parse_str() and nl2br()) or generate whole preview page in PHP and call it by sending it data. I.e.

preview.php:

....
<?php
// do your preview stuff
?>
...

When you call preview (in JavaScript):
wnd = window.open();
wnd.location = "preview.php?text=" + adapt_text(document.message.value);

adapt_text() is a PHP function which will convert your message to some acceptable form, like urldecode() in PHP. I don't know if JavaScript has something for this or you have to make it yourself...

Be carefull that the text size is very limited.

You can handle preview this way as well:
<input name=send type=submit value=send>
<input name=prev type=submit value=preview>
Your PHP script will check which was pressed:
if (isset($send)) {...} elseif (isset($prev)) {...}The problem is that you cannot open the window the way you'd want it to open...

Good luck