Comments on: Writing Solid PHP http://chadaustin.me/2006/10/writing-solid-php/ Tue, 06 Mar 2012 21:20:45 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: ext_119666 http://chadaustin.me/2006/10/writing-solid-php/comment-page-1/#comment-4387 ext_119666 Thu, 28 Aug 2008 12:30:49 +0000 http://aegisknight.org/new/2006/10/01/writing-solid-php/#comment-4387 Whoa! I've been doing that as well, and I hadn't even been thinking about it! I can see how doing it natively would go against the spirit of all the silent and dynamic declarations and typing. Speaking of php silently munging types, and functions passed as an array... The pecl extension libcurl in latish (>5.1) versions of php can "sort of" (you need to call two or three functions, but you get there) take an arbitrary number of pseudo-parameters in an array through the function curl_setopt_array() (I think it's called) .. Long story short though... I haven't figured out which constants I can actually put through there without it issuing a warning (that's right, not a notice.. A WARNING) ... making it an irritating function. I haven't tried giving it integer values yet, maybe that will work.... lol.... And ANOTHER thing! In PHP5 (tested under 5.2.x) I found interesting behaviour from file_get_contents() .. I think it will be fixed in PHP6 and is acknowledged as a bug (maybe even php 5.3) but try giving the function an error (say, a file doesn't exist or the redirection limit is exceeded if over http) and attempt to try/catch it. You can't. With the great new private, public, protected, extended and so on and so forth classy power of recent php versions - and with the object oriented nature of a lot of common extensions and built in functions now such as things to do with dates - well, some things throw exceptions and some just throw errors. How do you deal with this? It was a only a 200-line toy script where this actually stung me, but what I had to do was to implement a custom error handler (for that!?)... So if you want to use try/catch then in some specific situations you need to have an error handler AND an exception handler. Small thing to care about but a gotcha -- this is why people test what they write, I guess. Regardless, on that script I just die for most issues, or at least complain very loudly and let it happen five times and then die. Wow, I've written so many words and yet I haven't actually said anything. Meh, maybe someone can salvage something from it; I'll submit it anyway :P Whoa! I’ve been doing that as well, and I hadn’t even been thinking about it! I can see how doing it natively would go against the spirit of all the silent and dynamic declarations and typing.

Speaking of php silently munging types, and functions passed as an array… The pecl extension libcurl in latish (>5.1) versions of php can “sort of” (you need to call two or three functions, but you get there) take an arbitrary number of pseudo-parameters in an array through the function curl_setopt_array() (I think it’s called) .. Long story short though… I haven’t figured out which constants I can actually put through there without it issuing a warning (that’s right, not a notice.. A WARNING) … making it an irritating function. I haven’t tried giving it integer values yet, maybe that will work…. lol….

And ANOTHER thing! In PHP5 (tested under 5.2.x) I found interesting behaviour from file_get_contents() .. I think it will be fixed in PHP6 and is acknowledged as a bug (maybe even php 5.3) but try giving the function an error (say, a file doesn’t exist or the redirection limit is exceeded if over http) and attempt to try/catch it. You can’t. With the great new private, public, protected, extended and so on and so forth classy power of recent php versions – and with the object oriented nature of a lot of common extensions and built in functions now such as things to do with dates – well, some things throw exceptions and some just throw errors.

How do you deal with this? It was a only a 200-line toy script where this actually stung me, but what I had to do was to implement a custom error handler (for that!?)… So if you want to use try/catch then in some specific situations you need to have an error handler AND an exception handler. Small thing to care about but a gotcha — this is why people test what they write, I guess.

Regardless, on that script I just die for most issues, or at least complain very loudly and let it happen five times and then die.

Wow, I’ve written so many words and yet I haven’t actually said anything. Meh, maybe someone can salvage something from it; I’ll submit it anyway :P

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