Forget array_merge: PHP 7.4 Brings Spread Operator in Array Expression Available since PHP 5.6, argument unpacking is a syntax for unpacking arrays and Traversables into argument lists. The division operator ("/") returns a float value unless the two operands are integers (or strings that get converted to integers) and the numbers are evenly divisible, in which case an integer value will be returned. When we use ternary operator: We use the ternary operator when we need to simplify the if-else statements that are simply assigning values to variables depending on a condition. Finally, there is a single ternary operator , ? :), and the null coalescing operator (??? Null Coalescing Assignment operator is relatively new in PHP (added in PHP 7.4), so you code might not work in older PHP versions if you decide to use that operator. So it's actually just isset() in a handy operator. )” to check whether a variable contains value , or returns a default value. PHP 7 was released on 3 rd Dec 2015. : (Elvis Operator) Since PHP 5.3+, we can use the shorter ternary operator syntax by leaving out the middle part of the ternary operator for a quick shorthand evaluation: In addition to what Lawrence said about assigning a default value, one can now use the Null Coalescing Operator (PHP 7). For example, before PHP 7, we might have this code: For example, before PHP 7, we might have this code: It's the "null coalescing operator", added in php 7.0. PHP logical && operator . I.e: You want to set a default value to a variable if it is not defined, using the Elvis operator PHP will says that 0 is not defined, but you might want that 0... That's why PHP 7 will get the Null Coalesce operator, It will strictly test your variable against null, so PHP will says … To unpack an array or a Traversable, it has to be prepended by … This above pictorial helps you to understand the concept of LOGICAL AND operation with an analogy of taps and water. The definition of how it works is: It returns its first operand if it exists and is not NULL; otherwise it returns its second operand. An advantage of using a ternary operator is that it reduces the huge if-else block to a single line, improving the code readability and simplify it. For integer division, see intdiv(). These operators are syntax sugar only, and do not provide any meaningful performance difference compared to good ol' if/else blocks. Most numeric assignments and expressions that work in other high-level languages also work in PHP. We can provide the default values if the parameters are not received from user input: In this article, we'll compare and analyze the two shorthand conditional operators in PHP, the shorthand ternary operator, i.e. This operator ?? Binary operators take two values, such as the familiar arithmetical operators + (plus) and -(minus), and the majority of PHP operators fall into this category. In case-1 of the picture, both of the taps are closed, so the water is not flowing down. It does not generate any notices if not defined. We've already described simple examples of assignment, in which a variable is assigned the value of an expression using an equals sign. Which explains that if both of conditions are FALSE or 0, the return is FALSE or 0. PHP 7 introduced “null coalesce operator (?? PHP 7 is the most awaited and is a major feature release of PHP programming language. Output: Adult. the evlis operator (? In PHP 7 this was originally released, allowing a developer to simplify an isset() check combined with a ternary operator. is ideal to use with $_POST and $_GET for getting input from users or urls. Those two are equivalent 1: This tutorial will teach you the new features of PHP 7 and their usage in a simple and intuitive way. 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