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**What is Operator?**

Simple answer can be given using expression 4 + 5 is equal to 9. Here 4 and 5 are called operands and **+** is called operator.

PHP Operator is a symbol i.e used to perform operations on operands.

PHP language supports following type of operators. for example:

In the above example, + is the binary + **operator**, 10 and 20 are operands and $num is variable.

- Arithmetic Operators
- Comparison Operators
- Logical (or Relational) Operators
- Assignment Operators

### Arithmetic Operators

The arithmetic operators are used to perform 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 |

**Example:**

**output:**

### Comparison Operators

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

Examples

Operator | Description | Example |
---|---|---|

== | Checks if the value of two operands are equal or not, if yes then condition becomes true. | (A == B) is not true. |

!= | Checks if the value of two operands are equal or not, if values are not equal then condition becomes true. | (A != B) is true. |

> | Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. | (A > B) is not true. |

< | Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. | (A < B) is true. |

>= | Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. | (A >= B) is not true. |

<= | Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. | (A <= B) is true. |

**Example:**

**output:**

### 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 |

**Example:**

**Output:**

### 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 |

**Example:**

**Output:**