Explain operators used in PHP with the help of a program

 Explain operators used in PHP with the help of a program

                        

Operators in PHP are symbols or characters that perform specific operations on 

operands (variables, values, or expressions). 

1. Arithmetic Operators:

 - Addition (+): Adds two operands.

 - Subtraction (-): Subtracts the second operand from the first.

 - Multiplication (*): Multiplies two operands.

 - Division (/): Divides the first operand by the second.

 - Modulus (%): Returns the remainder of the division.

 - Increment (++) and Decrement (--): Increases or decreases the value of an 

operand by 1.

```php

<?php

 $a = 10;

 $b = 5;

 // Arithmetic operators

 $sum = $a + $b; // 10 + 5 = 15

 $difference = $a - $b; // 10 - 5 = 5

 $product = $a * $b; // 10 * 5 = 50

 $quotient = $a / $b; // 10 / 5 = 2

 $remainder = $a % $b; // 10 % 5 = 0

 // Increment and decrement operators

 $a++; // $a is now 11

 $b--; // $b is now 4

 echo "Sum: " . $sum . "\n";

 echo "Difference: " . $difference . "\n";

 echo "Product: " . $product . "\n";

 echo "Quotient: " . $quotient . "\n";

 echo "Remainder: " . $remainder . "\n";

 echo "Incremented a: " . $a . "\n";

 echo "Decremented b: " . $b . "\n";

?>

```

2. Assignment Operators:

 - Assignment (=): Assigns a value to a variable.

 - Compound assignment operators (e.g., +=, -=, *=, /=): Perform an operation 

and assign the result to the variable.

```php

<?php

 $x = 10;

 $y = 5;

 // Assignment operator

 $result = $x + $y; // $result is assigned the value 15

 // Compound assignment operator

 $x += $y; // Equivalent to $x = $x + $y; (15)

 $y *= 2; // Equivalent to $y = $y * 2; (10)

 echo "Result: " . $result . "\n";

 echo "Updated x: " . $x . "\n";

 echo "Updated y: " . $y . "\n";

?>

```

3. Comparison Operators:

 - Equal to (==): Checks if two values are equal.

 - Identical to (===): Checks if two values are equal and of the same type.

 - Not equal to (!= or <>): Checks if two values are not equal.

 - Not identical to (!==): Checks if two values are not equal or not of the same 

type.

 - Greater than (>): Checks if the first value is greater than the second.

 - Less than (<): Checks if the first value is less than the second.

 - Greater than or equal to (>=): Checks if the first value is greater than or 

equal to the second.

 - Less than or equal to (<=): Checks if the first value is less than or equal to 

the second.

```php

<?php

 $a = 10;

 $b = 5;

 // Comparison operators