PHP Operator

PHP Tutorial » PHP Operator

Arithmetic Operators
Operator Precedence
Assignment Operators
Comparison Operators
Bitwise Operators
Error Control Operators
Execution Operators
Logical Operators
Incrementing/Decrementing Operators
Array Operators
String Operators
Type Operators

An operator is something that takes one or more expression and gives another value.

PHP Arithmetic Operators example

PHP arithmetic operators are used with numeric values to perform common arithmetical operations, such as: addition ($a + $b), subtraction ($a - $b), multiplication ($a * $b), division($a / $b), modulus($a % $b), exponentiation($a ** $b).

Example:

<!DOCTYPE html>

<html>

<body>

<h1>PHP Arithmetic Operators example</h1>

<?php

  

  echo (4+8).",\n";

  echo (24-6).",\n";

  echo (12*3).",\n";

  echo (12/3).",\n";

  echo (4%8).",\n";

  echo (2**6).",\n";

  

  ?>
</body>

</html>

PHP Assignment Operators, example

Basic PHP assignment operator is "=" (without quotes). Meaning: left operand gets set to the value of the assignment expression on the right.

Example of assignment operatore used in PHP:
1. x = y as: x =y, (x assigned y)
2. x += y as x = x + y, (Addition)
3. x -= y as x = x - y, (Subtraction)
4. x *= y as x = x * y, (Multiplication)
5. x /= y as x = x / y, (Division)
6. x %= y as x = x % y, (Modulus)

Example:

<!DOCTYPE html>

<html>

<body>

<h1>PHP Assignment Operators</h1>

<?php

  

  $x = 125; 

  echo $x.",<br />";
$y = 25; 

  $y += 110;

  echo $y.",<br />";
$z = 55;

  $z -= 32;

echo $z.",<br />";
$a = 10; 

  $b= 6;

echo $a * $b.",<br />";

  ?>
</body>

</html>

PHP Increment / Decrement Operators

The PHP increment operators - used to increment a variable's.

The PHP decrement operators - used to decrement a variable's value.

1. ++$x : Increments $x by one, then returns $x
2. $x++ : Returns $x, then increments $x by one
3. --$x : Decrements $x by one, then returns $x
4. $x-- : Returns $x, then decrements $x by one

Example: PHP Increment / Decrement Operators

<!DOCTYPE html>

<html>

<body>

<h1>PHP Increment / Decrement Operators</h1>

<?php

  

  $x = 14; 

  echo ++$x.",<br />";
$y = 22; 

  echo $y++.",<br />";
$z = 12; 

  echo --$z.",<br />";
$w = 11; 

  echo $w--.",<br />";


  ?>
</body>

</html>

php operator, precedence, =, or, modulo, not supported for string, overload, and, in variable, double question marq
PHP Operator Types - php tutorial

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