Thursday, September 10th, 2009
Formaldehyde: PHP debug info for the client side
<>p>
Andrea Giammarchi has released Formaldehyde, a new Ajax and PHP error debugger.
Simply grab the project and throw in an inclusion:
PHP:
-
-
<?php require_once 'formaldehyde.php'; ?>
-
You are off to the races.
Want to do a touch more?
JAVASCRIPT:
-
-
// *optional* custom ServerError constructor
-
function ServerError(e){
-
for(var key in e)
-
this[key] = e[key]
-
;
-
};
-
// make Firebug the best friend ever
-
(ServerError.prototype = new Error).name = "ServerError";
-
-
// same call
-
var xhr = new XMLHttpRequest;
-
xhr.open("get", "test.php", true);
-
xhr.onreadystatechange = function(){
-
if(xhr.readyState === 4){
-
if(199 <xhr.status && xhr.status <400){
-
// do something without failures
-
eval(xhr.responseText);
-
}
-
-
// if Formaldehyde managed the call
-
else if(xhr.status === 500 && xhr.getResponseHeader("X-Formaldehyde") != null) {
-
-
// evaluate safely the response
-
// generating a proper error
-
console.log(new ServerError(eval("(" + xhr.responseText + ")")));
-
-
} else {
-
// 404 or other cases
-
console.log(new Error(xhr.responseText));
-
}
-
}
-
};
-
xhr.send(null);
-
We have known about the great FirePHP for quite some time, but this is different as explained. Check it out!
Related Content:
4.7 rating from 19 votes
Thanks Dion, just as extra note: this evening I am planning to create a cross-browser JavaScript file to include if necessary in order to make responses management automatic and possibly compatible with every library as well without changing a single piece of code ( it’s a XMLHttpRequest / ActiveXObject wrapper )
That should make this little project complete so please stay tuned
Ok, I’m impressed.
As promised, Formaldehyde JS cross-browser, same logic (include as first file in the page that will perform Ajax calls, and that’s it, do not require any change in your existent JS code)
http://code.google.com/p/formaldehyde/
I am writing down some documentation about.
Regards