![]() ![]() Ternary operator logic is the process of using "(condition) ? (true return value) : (false return value)" statements to shorten your if/else structures. If/Else statements aren't optimal (or necessary) in all situations. I preach a lot about using shorthand CSS and using MooTools to make JavaScript relatively shorthand, so I look towards PHP to do the same. If / Else statements are great but they can be too long. If / Else statements are easy to code and global to all languages. This simple preg_match() call, in Exakat’s code.An essential part of programming is evaluating conditions using if/else and switch/case statements. While researching for this article, one special case fell on the radar. define() illustrate a tactical fallback creation of constants. preg_match() is a bit of a surprise, just like the directive-related functions. List() is a classic when the right-hand expression doesn’t contain enough elements to fill the left-hand expression. Most Common Functions With are the most silenced PHP functions? Here is a list of the classics, in alphabetical order (No need to make this a competition, right?).įunction about files are the most frequent, given that the involved files might or not be accessible at execution. It is very rare that error suppression is intended on a whole included file, so is probably superfluous after the file_exists() check. ![]() When the aims at checking if the included file is actually available, as in caching situations, then file_exists() checks removes the usage of on include. The real challenge is the PHP code inside the string, which will bubble up to the calling context. The problem is not related to eval() itself : after all, passing one string as argument is not a real challenge. King of evil, eval() is definitely a classic candidate for error suppression. No more need for alternative is to switch to PHP 8.0 attributes (unless you are reading this article before PHP 8.0 publication). That way, the code is useful during the development phase, with its message, and removed in production. Those assertion produce an error, and may be removed with a php.ini directive. Since the application uses error manager, the most logical way to log something is to emit an error, with the right level : here, E_USER_DEPRECATED.Īmong the alternative for this situation, one may use assert(). The deprecation should be hidden, indeed. Trigger_error() is used here to fill a log, and is here to avoid such notice to be displayed in the GUI of the application. Let’s understand it : trigger_error() emits an error and then, immediately, hide it. If the feature can be emulated, it is even better. In that case, a conditional constant (or other structures) definition, with a neutral value, removes the error. Until then, using it is not possible, as htmlentities() will not recognize it. In case the code is trying to make use an upcoming PHP features, there are not early warning.įor example, this is also the case for upcoming new constant, which appeared in PHP 5.4. Upcoming Featuresĭeprecated features are usually warned before the actual removal. This is achieved in different ways : use of is_array() function with an if/then condition use of (array) cast or even a typehint. In this case, the best alternative is to check that array keyexists() is actually applied to an array, and not an object. Yet, in the development phase, it is always better to keep the notice activated : this is the best moment to learn about then, and fix them. The easy alternative is to configure php.ini directive error_reporting without deprecation notices. Until then, a simple PHP Deprecated is emitted, and the code will not stop. In PHP 8.0, this call will emit a TypeError exception, and stop. During the phase of ‘deprecated warning’, array_key_exists works as usual, yet emits a warning to help prepare for the upcoming exception. Here, is used to hide obsolescence messages. In order to understand the phenomenon better, let’s review a large range of situations, consider what is happening and what are the alternative options. In fact, it is often faster to write a check before the call, to alleviate that problem. The error is processed by PHP, in particular the error handlers, and simply suppress any final output. ![]() Indeed, are there good reasons to still use this operator nowadays? is very slow : it actually intervenes at the last moment of errors processing. Yet, it is widely recommended avoiding using it. It is a staple of PHP code, in use in over 65% of PHP repositories : 2 repositories out of 3. ![]() I scream, you scream, we all scream for is a classic PHP operator, meant to suppress error displays locally. ![]()
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