So it's actually just isset() in a handy operator. Most numeric assignments and expressions that work in other high-level languages also work in PHP. Example. PHP logical && operator . Which explains that if both of conditions are FALSE or 0, the return is FALSE or 0. Those two are equivalent 1: 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. PHP's behaviour when using more than one ternary operator within a single statement is non-obvious compared to other languages. This is a three-way comparison operator and it can perform greater than, less … This article will make you aware of a very useful operator i.e the spaceship operator PHP 7. We've already described simple examples of assignment, in which a variable is assigned the value of an expression using an equals sign. 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. 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. In addition to what Lawrence said about assigning a default value, one can now use the Null Coalescing Operator (PHP 7). Output: Adult. Reading from left to right, the first value which exists and is not null is the value that will be returned. In case-1 of the picture, both of the taps are closed, so the water is not flowing down. operator which rather than indicating extreme confusion which is how I would usually use two question marks together instead allows us to chain together a string of values. For integer division, see intdiv(). PHP 7 is the most awaited and is a major feature release of PHP programming language. The username and password can now be specified as part of the PDO DSN for the mysql, mssql, sybase, dblib, firebird and oci drivers. This operator returns its first operand if it is set and not NULL.Otherwise it will return its second operand. Indeed prior to PHP 8.0.0, ternary expressions were evaluated from left to right, instead of right to left like most other programming languages. PDO. 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. 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. To unpack an array or a Traversable, it has to be prepended by … Previously this was only supported by the pgsql driver. php documentation: Null Coalescing Operator (??) Null coalescing is a new operator introduced in PHP 7. This above pictorial helps you to understand the concept of LOGICAL AND operation with an analogy of taps and water. PHP 7 was released on 3 rd Dec 2015. This tutorial will teach you the new features of PHP 7 and their usage in a simple and intuitive way. Hence when we want to assign a default value we can write: In PHP 7 we additionally get the ?? The spaceship operator or combined comparison operator is denoted by “=>“. It's the "null coalescing operator", added in php 7.0.