Currently a (PHP5.4) web application I manage does not support unicode characters, so I want to convert it in order to support unicode (utf-8). Since future version (PHP6) may offer native unicode support I would like to keep the original native functions (e.g. trim(), strtoupper() etc) intact. Basically I want to override existing built in functions to do that.
The solution so far I came up with was to create one big include file to each page with the relevant functions and use namespaces, so for example:
namespace my_ns;
mb_internal_encoding("UTF-8");
function strtoupper()
{
$args = func_get_args();
return call_user_func_array('mb_strtoupper', $args );
}
However, in order for this to work i would have to add the namespace to each file, since namespaces are apparently bound to a single php-file.
My question is: is this the best way to go forward or are there better methods? Is there a way to 'autoload' namespaces automatically?
Help appreciated
update:
I found changing mbstring.func_overload in the php.ini file can override the existing functions, so that answers my question I guess.
Related
Is it possible to add a removed/deprecated function to PHP5? Like session_is_registered, ereg, etc.
[update] solved for session_is_registered:
<?php
function session_is_registered($name) {
return isset($_SESSION[$name]);
}
thanks.
Of course you can do it by modifying and recompiling the PHP source code, however the first question you have to answer is Do I really need to this or I might be better to go for my IDE's find-and-replace function?
If there is a real need for this -- for whatever reason, maybe you can redefine those functions. I haven't test it yet, as I agree with others that functions and features get removed or deprecated for a good and mostly important reasons, so I'm not sure if it does work in a situation that the function is removed or depreciated, but you can try to redefine them either using runkit_function_redefine or
override_function.
In that case you have to simulate the functionality again -- probably with their good-to-go replacements, so again think twice before start doing that.
I have a PHP program using MySQL that I will be making open-source, including a simple installer, and I want to make it as easy to install on any server with PHP4 or 5 and MySQL 4 as possible.
I've included an installer to make it user-friendly, but I need to know what are the things I can do to make it most likely to install on every server.
I'll start: I've made sure to use full PHP tags (not short) like this <?php ?> and to make sure all variables are declared prior to using them, like so $nVar = (isset($_POST['nVar']) ? $_POST['nVar'] : NULL);.
What other best practices should be incorporated in a PHP app for the best cross-server compatability?
Just a few hints, from the top of my head
The class { __constructor } is deprecated.
Dont use GLOBAL
Use split and join
Watch out for file magic byte recognition functions
The get_class get_parent_class alphanumerical changed to accept camelcasing - use strtolower on returned value before comparing
I am building a multilingual application in PHP + CodeIgniter. I have settled upon using gettext for UI text translation, and so far it has proven efficient and easy to work with.
But now I am facing something really annoying: the gettext() function only accepts one parametre, while I'd like a printf-like behaviour that I get from Zend Framework's gettext adapter, where I can use %1$s, %2$s etc. as placeholders and then specify the replacement strings as additional parametres to Zend view's translate() function.
I do not wish to ditch gettext due to the easy translation management with .po files and poEdit (I can get it updated with a single click, after all). What are my options?
I have already tried writing a helper to interact with gettext: run the first argument through gettext and then run strtr on the resulting string. Are there any other/better approaches you would recommend?
It's quite simple actually, you define a variadic function like this:
function myGettext($id)
{
return vsprintf(gettext($id), array_slice(func_get_args(), 1));
}
Now doing myGettext('%u %s in a %s', 3, 'monkeys', 'tree') will return the expected string with the placeholders replaced by the remaining arguments. You obviously also need to implement a plural aware function that calls ngettext() instead.
Regarding poEdit, you have to modify the keywords it searches for, it's been a while since I last used it but it was quite simple, the only problem I faced was identifying keywords for plural support (see this).
Hope it helps!
Is there a way to remove function alias in PHP?
I can rename my function but it would be nice to use name "fetch".
Problem:
I just tested the following code and it appears to work for me, but perhaps it is because I don't have the mysqli library installed. I would test it because it might be more contextual than your IDE will have you believe. It seems to be a method for mysqli, but it might not be a global function.
<?php
function fetch(){
echo 'Hello world!';
}
fetch();
No.
(Short of recompiling the PHP binary)
This is more of a function of the IDE than the actual language... Some IDEs may give you that ability... I don't even know if recompiling the PHP binary (as Alan Storm suggested) would help since sometimes the stuff is hardcoded into the IDE / use the PHP docs online
For completeness sake: Normally, no, this can not be done. However: this can be done using a PECL extension called "runkit".
Runkit is described as "For all those things you probably shouldn't have been doing anyway", and allows you to basically tear out the innards of PHP from within PHP itself. Replacing built-in functions, undefining constants, unloading classes - suddenly everything is possible. And you should really question what you are doing if you ever feel you need it - odds are what you are doing violates some principles that are there for very good reasons, you just don't know them yet. I've never found a situation where using Runkit was a genuinely Good Idea.
Oh, in order to remove built-in functions you'll specifically need to enable this capability in your php.ini
(have fun!)
I'm writing Content Management software in PHP (which should not be bigger then 3kb when minified), but what engine should I use for languages (english, dutch, german, chinese, etc...)? I was thinking of creating a function called
function _(){}
that reads strings from a file (a .ini file or similar). But does somebody has an (preferably one with as less code as possible) engine that might be smaller or faster?
I'm not sure if these engines exist already, if not, please say and I will use the _() function.
If I were you I would make my translation function like such (which I believe is very similar to gettext): make it into an sprintf()-like function and translate based on the format string, like so:
function __() {
$a = func_get_args();
$a[0] = lookup_translation($a[0]);
return call_user_func_array("sprintf", $a);
}
Now, you can use the function simply like this:
echo __("Thanks for logging in, %s!", $username);
And in a data file somewhere you have:
"Thanks for logging in, %s!"="Merci pour enlogger, %s!" (*)
The advantages of this are:
You don't have to think up identifiers for every single message: __("login_message", $username), __("logout_message", $username), etc...
You don't immediately have to write a translation for the string, which you would have to if you just used an identifier. You can defer the translation until later, once you're done coding and everything works in English.
(Similarly) You don't have to translate all strings for all languages at once, but you can do it in chunks
For maximum convenience, I would make the __ function log untranslated messages somewhere, so you don't have to go hunting for untranslated strings. Let the system tell you what needs to be translated!
(*) Disclaimer: I don't speak French ;)
You can't use _() because this is a build-in function for internationalization. You are free to roll your own function (call it __()) or use the build-in one which uses the widespread gettext system.
Drupal, for example, uses function t() for this purposes.