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Types of Operator in PHP

Types of Operators in PHP

PHP offers a variety of operators to perform different operations on variables and values. Here's a breakdown of the main types:

Arithmetic Operators

Used for mathematical calculations:

  • Addition: +
  • Subtraction: -
  • Multiplication: *
  • Division: /
  • Modulus (remainder): %
  • Exponentiation: ** (introduced in PHP 5.6)   

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Assignment Operators

Used to assign values to variables:

  • Simple assignment: =
  • Addition assignment: +=
  • Subtraction assignment: -=
  • Multiplication assignment: *=
  • Division assignment: /=
  • Modulus assignment: %=
  • Exponentiation assignment: **= (introduced in PHP 5.6)   

 

Comparison Operators

Used to compare values:

  • Equal: ==
  • Identical: === (checks both value and type)
  • Not equal: !=
  • Not identical: !==
  • Greater than: >
  • Less than: <
  • Greater than or equal to: >=
  • Less than or equal to: <=

Logical Operators

Used to combine logical conditions:

  • And: && or AND
  • Or: || or OR
  • Not: !

Increment/Decrement Operators

Used to increment or decrement a variable's value by 1:

  • Pre-increment: ++ (before evaluation)
  • Post-increment: ++ (after evaluation)
  • Pre-decrement: -- (before evaluation)
  • Post-decrement: -- (after evaluation)

String Operators

Used to concatenate strings:

  • Concatenation: .

Array Operators

Used to manipulate arrays:

  • Union: +
  • Equality: ==
  • Inequality: !=

Bitwise Operators

Used to perform operations on individual bits of integers:

  • And: &
  • Or: |
  • Xor: ^
  • Not: ~
  • Left shift: <<
  • Right shift: >>

Type Operators

Used to check the type of a variable:

  • Type cast: (type)
  • Typeof operator: typeof

Example:

PHP

$x = 10; $y = 5; // Arithmetic operations

$sum = $x + $y;

$difference = $x - $y;

$product = $x * $y;

$quotient = $x / $y;

$remainder = $x % $y;

// Comparison operations

if ($x > $y) {    echo "x is greater than y"; }

// Logical operations

if ($x > 0 && $y > 0) {    echo "Both x and y are positive"; }

// String concatenation

$greeting = "Hello, " . "world!";

Use code with caution.

 

These operators are fundamental to PHP programming and are used extensively in various contexts to perform different operations and control the flow of your code.

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