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You've made a GUI for your web interface, but everytime you submit a form, the browser redraws
the page. Here's a way to submit the form WITHOUT having to wait for the browser to download the
GUI all over again.
OK, I know we're supposed to be using XML, but why translate it back and forth? This lets you
work with php variables and html as you're used to working with it :)
This example is known to work for IE6 (Win), NN7 (Win) and Mozilla 1.5.1 (Linux). This example
uses nonstandard javascript, so don't expect everybody to be able to use it.
The html file:
| [code]
<html>
<head>
<title>Remote Scripting Example</title>
<script type="text/javascript">
// load the appropriate xmlHttpRequest for IE or Mozilla
// this sniffer code can be found at
// http://jibbering.com/2002/4/httprequest.html
var xmlHttp
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
try {
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP")
} catch (e) {
try {
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP")
} catch (E) {
xmlHttp=false
}
}
@else
xmlHttp=false
@end @*/
if (!xmlHttp) {
try {
xmlHttp = new XMLHttpRequest();
}
catch (e) {
xmlHttp=false
}
}
// end jibbering.com code
// the php script to process the form. var must be global!
var URLto = 'process.php';
// function to build POST requests
function buildPOST(theFormName) {
theForm = document.forms[theFormName];
var qs = ''
for (e=0;e<theForm.elements.length;e++) {
if (theForm.elements[e].name!='') {
var name = theForm.elements[e].name;
qs+=(qs=='')?'':'&'
qs+= name+'='+escape(theForm.elements[e].value);
}
}
qs+="\n";
return qs
}
// function to communicate with remote script
function send_post(theFormName) {
var xmlMessage = buildPOST(theFormName);
xmlHttp.open("POST", URLto, false)
// for ie compatability
xmlHttp.setRequestHeader('Content-Type','text/html')
xmlHttp.send(xmlMessage)
}
function display_response() {
var optionDiv = document.getElementById("responseContainer");
optionDiv.innerHTML = xmlHttp.responseText;
}
</script>
</head>
<body>
<!-- note: form must be named! -->
<form name="form1" onsubmit="send_post(this.name); display_response(); return false;">
<p>What is your favorite color? <input type="text" name="color">
<input type="submit" value="go"></p>
</form>
<div id="responseContainer"></div>
</body>
</html> | |
The php script (process.php)
| [code]
<?php
// get data. note, $_POST[] does not seem to work.
function get_data($var_name) {
global $$var_name;
$raw = $GLOBALS['HTTP_RAW_POST_DATA'];
$pairs = explode('&',$raw);
for($i=0;$i<sizeof($pairs);$i++) {
$unencoded = urldecode($pairs[$i]);
$pattern = "/($var_name)=([a-zA-Z0-9\, ]+)/";
if(preg_match($pattern,$unencoded,$matches)) {
$$matches[1]=$matches[2];
}
}
}
get_data('color');
// output response. you now have the variables in the current scope, and you
// could query a database for information, but for now, just show that we have
// received the variable passed to the script.
print "I agree, $color is my favorite, too!";
?> | |
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| | | | Simon Speich wrote : 988
to access $_post[] variables you just need to set the content type differently:
xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
instead of using the get_data function, just use the $_post vars!
| | | | Tim Morton wrote : 989
You know, that`s the first way I tried it, and I swear it didn`t work... But then again, I was using the raw post and not $_POST by that time.
I tried it again using the regular $_POST variable and setRequestHeader(`Content-Type`,`application/x-www-form-urlencoded`) and it worked fine in IE, NN7, and Mozilla
Thanks for the improvement! :)
| | | | Ming Chern Foo wrote :1044
Hi, has anyone testing using HTML editors(javascripts) with remote scripting?
I`m currently trying to make it work but to no avail...
Can anyone help me?
regards,
DESPERATE
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