How do the PHP equality (== double equals) and identity (=== triple . . . PHP Double Equals == equality chart: PHP Triple Equals === Equality chart: Source code to create these images: PHP equality charts Guru Meditation Those who wish to keep their sanity, read no further because none of this will make any sense, except to say that this is how the insanity-fractal, of PHP was designed NAN != NAN but NAN == true
PHP short-ternary (Elvis) operator vs null coalescing operator The PHP 7 0 migration docs has this to say: The null coalescing operator (??) has been added as syntactic sugar for the common case of needing to use a ternary in conjunction with isset ()
syntax - What are the PHP operators ? and - Stack Overflow As of PHP 5 3: Since PHP 5 3, it is possible to leave out the middle part of the ternary operator Expression expr1 ?: expr3 returns expr1 if expr1 evaluates to TRUE, and expr3 otherwise As of PHP 7 0 PHP 7 has new Null Coalesce Operator This is the same as a ternary but is also called an "isset ternary"
Reference Guide: What does this symbol mean in PHP? (PHP Syntax) What is this? This is a collection of questions that come up now and then about syntax in PHP This is also a Community Wiki, so everyone is invited to participate in maintaining this list This qu
Whats the difference between :: (double colon) and - gt; (arrow) in PHP? The difference between static and instantiated methods and properties seem to be one of the biggest obstacles to those just starting out with OOP PHP in PHP 5 The double colon operator (which is called the Paamayim Nekudotayim from Hebrew - trivia) is used when calling an object or property from a static context