**What is Operators in PHP ?**

Operators are symbols that tell the PHP processor to perform certain actions. For example, the addition (+) symbol is an operator that tells PHP to add two variables or values, while the greater-than (>) symbol is an operator that tells PHP to compare two values.

The following lists describe the different operators used in PHP.

### PHP Arithmetic Operators

Arithmetic operators are used to performing common arithmetical operations, such as addition, subtraction, multiplication, etc. Here’s a complete list of PHP’s arithmetic operators:

Operator | Description | Example | Result |

+ | Addition | $x + $y | Sum of $x and $y |

– | Subtraction | $x – $y | Difference of $x and $y. |

* | Multiplication | $x * $y | Product of $x and $y. |

/ | Division | $x / $y | Quotient of $x and $y |

% | Modulus | $x % $y | Remainder of $x divided by $y |

The following example will show you these arithmetic operators in action:

**Example:**

### PHP Assignment Operators

The assignment operators are used to assign values to variables.

Operator | Description | Example | Is The Same As |

= | Assign | $x = $y | $x = $y |

+= | Add and assign | $x += $y | $x = $x + $y |

-= | Subtract and assign | $x -= $y | $x = $x – $y. |

*= | Multiply and assign | $x *= $y | $x = $x * $y |

/= | Divide and assign quotient | $x /= $y | $x = $x / $y |

%= | Divide and assign modulus | $x %= $y | $x = $x % $y |

The following example will show you these assignment operators in action:

**Example:-**

### PHP Comparison Operators

The comparison operators are used to compare two values in a Boolean fashion.

Operator | Description | Example | Result | |

== | Equal | $x == $y | True if $x is equal to $y | |

=== | Identical | $x === $y | True if $x is equal to $y, and they are of the same type | |

!= | Not equal | $x != $y | True if $x is not equal to $y | |

<> | Not equal | $x <> $y | True if $x is not equal to $y | |

!== | Not identical | $x !== $y | True if $x is not equal to $y, or they are not of the same type | |

< | Less than | $x < $y | True if $x is less than $y | |

> | Greater than | $x > $y | True if $x is greater than $y | |

>= | Greater than or equal to | $x >= $y | True if $x is greater than or equal to $y | |

<= | Less than or equal to | $x <= $y | True if $x is less than or equal to $y |

The following example will show you these comparison operators in action:

**Example:-**

### PHP Incrementing and Decrementing Operators

The increment/decrement operators are used to increment/decrement a variable’s value.

Operator | Name | Effect |

++$x | Pre-increment | Increments $x by one, then returns $x |

$x++ | Post-increment | Returns $x, then increments $x by one |

–$x | Pre-decrement | Decrements $x by one then returns $x |

$x– | Post-decrement | Returns $x, then decrements $x by one |

The following example will show you these increment and decrement operators in action:

**Example:-**

### PHP Logical Operators

The logical operators are typically used to combine conditional statements.

Operator | Name | Example | Result |

and | And | $x and $y | True if both $x and $y are true |

or | Or | $x or $y | True if either $x or $y is true |

xor | Xor | $x xor $y | True if either $x or $y is true, but not both |

&& | And | $x && $y | True if both $x and $y are true |

|| | Or | $x || $y | True if either $$x or $y is true |

! | Not | !$x | True if $x is not true |

The following example will show you these logical operators in action:

**Example=>**

### PHP String Operators

There are two operators which are specifically designed for strings.

Operator | Description | Example | Result |

. | Concatenation | $str1 . $str2 | Concatenation of $str1 and $str2 |

.= | Concatenation assignment | $str1 .= $str2 | Appends the $str2 to the $str1 |

The following example will show you these string operators in action:

**Example=>**

### PHP Array Operators

The array operators are used to compare arrays:

True if $x is not equal to $yOperator | Name | Example | Result |

+ | Union | $x + $y | Union of $x and $y |

== | Equality | $x == $y | True if $x and $y have the same key/value pairs |

=== | Identity | $x === $y | True if $x and $y have the same key/value pairs in the same order and of the same types |

!= | Inequality | $x != $y | True if $x is not equal to $y |

<> | Inequality | $x <> $y | True if $x is not equal to $y |

!== | Non-identity | $x !== $y | True if $x is not identical to $y |

The following example will show you these array operators in action:

**Example=>**

### PHP Spaceship Operator

The spaceship operator returns 0 if both operands are equal, 1 if the left is greater, and -1 if the right is greater. It basically provides three-way comparison as shown in the following table:

Operator | <=> Equivalent |

$x < $y | ($x <=> $y) === -1 |

$x <= $y | ($x <=> $y) === -1 || ($x <=> $y) === 0 |

$x == $y | ($x <=> $y) === 0 |

$x != $y | ($x <=> $y) !== 0 |

$x >= $y | ($x <=> $y) === 1 || ($x <=> $y) === 0 |

$x > $y | $x <=> $y) === 1 |

The following example will show you how spaceship operator actually works:

**Example=>**

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