By /

Comparison Operators in PHP

Purpose
  • Comparison operators are used to compare two values.
  • They return a boolean value (either true or false) based on the comparison result.
Common Assignment Operators:
  1. == (Loose Equality): Checks if two values are equal, but may perform type coercion (e.g., ‘5’ == 5 will return true).
  2. === (Strict Equality): Checks if two values are equal in both value and type.
    • $x = 5;
       $y = '5';
       var_dump($x == $y); // true (loose equality)
       var_dump($x === $y); // false (strict equality)
  3. != (Not Equal): Checks if two values are not equal (loose equality).  
  4. !== (Strict Not Equal): Checks if two values are not equal in both value and type.
  5. > (Greater Than): Checks if the left-hand operand is greater than the right-hand operand. 
  6. < (Less Than): Checks if the left-hand operand is less than the right-hand operand. 
  7. >= (Greater Than or Equal To): Checks if the left-hand operand is greater than or equal to the right-hand operand.
  8. <= (Less Than or Equal To): Checks if the left-hand operand is less than or equal to the right-hand operand.
Example:
$a = 10;
$b = 5;

var_dump($a > $b); // true
var_dump($a < $b); // false
var_dump($a >= $b); // true
var_dump($a <= $b); // false
Key Points
  • Comparison operators are essential for making decisions in your JavaScript code (e.g., in if statements and loops).
  • Always use strict equality (===) when possible to avoid unexpected behavior due to type coercion.
Scroll to Top