Thursday, September 10th, 2009
Formaldehyde: PHP debug info for the client side
Andrea Giammarchi has released Formaldehyde, a new Ajax and PHP error debugger.
Simply grab the project and throw in an inclusion:
PHP:
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<?php require_once 'formaldehyde.php'; ?>
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You are off to the races.
Want to do a touch more?
JAVASCRIPT:
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// *optional* custom ServerError constructor
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function ServerError(e){
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for(var key in e)
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this[key] = e[key]
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;
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};
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// make Firebug the best friend ever
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(ServerError.prototype = new Error).name = "ServerError";
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// same call
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var xhr = new XMLHttpRequest;
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xhr.open("get", "test.php", true);
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xhr.onreadystatechange = function(){
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if(xhr.readyState === 4){
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if(199 <xhr.status && xhr.status <400){
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// do something without failures
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eval(xhr.responseText);
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}
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// if Formaldehyde managed the call
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else if(xhr.status === 500 && xhr.getResponseHeader("X-Formaldehyde") != null) {
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// evaluate safely the response
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// generating a proper error
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console.log(new ServerError(eval("(" + xhr.responseText + ")")));
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} else {
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// 404 or other cases
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console.log(new Error(xhr.responseText));
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}
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}
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};
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xhr.send(null);
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We have known about the great FirePHP for quite some time, but this is different as explained. Check it out!
4.6 rating from 17 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
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