Formaldehyde: PHP debug info for the client side

Category: Debugging , PHP

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Andrea Giammarchi has released Formaldehyde, a new Ajax and PHP error debugger.

Simply grab the project and throw in an inclusion:

< ?php require_once 'formaldehyde.php'; ?>

You are off to the races.

Want to do a touch more?

// *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!

3 Comments »

Comments feed TrackBack URI

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

Comment by WebReflection — September 10, 2009

Ok, I’m impressed.

Comment by Darkimmortal — September 10, 2009

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

Comment by WebReflection — September 10, 2009

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