PHP Tutorial

🔢 PHP Math

PHP provides powerful built-in mathematical functions that allow you to perform basic to advanced math operations easily.

📘 Basic Arithmetic Operators

PHP supports all standard arithmetic operations:

• + Addition
• - Subtraction
• * Multiplication
• / Division
• % Modulus (Remainder)

<?php
  $a = 15;
  $b = 4;

  echo $a + $b; // 19
  echo $a - $b; // 11
  echo $a * $b; // 60
  echo $a / $b; // 3.75
  echo $a % $b; // 3
?>
  

📚 Common Math Functions in PHP

• abs(x) – Returns the absolute (positive) value
• round(x) – Rounds a number
• ceil(x) – Rounds up
• floor(x) – Rounds down
• sqrt(x) – Returns the square root
• pow(x, y) – Raises x to the power y
• max(x, y...) – Returns the highest value
• min(x, y...) – Returns the lowest value
• rand(min, max) – Returns a random number

🔍 Example:

<?php
  echo abs(-20);       // 20
  echo round(3.4);     // 3
  echo ceil(3.4);      // 4
  echo floor(3.9);     // 3
  echo sqrt(16);       // 4
  echo pow(2, 3);      // 8
  echo max(4, 7, 1);   // 7
  echo min(4, 7, 1);   // 1
  echo rand(10, 99);   // Random number between 10–99
?>
  

✅ Summary:

• Basic arithmetic: +, -, *, /, %
• Useful functions: round(), abs(), sqrt(), rand(), etc.
• Perfect for calculations, games, and data processing