Happy Coders

PHP provides built-in math functions to perform various numerical operations like arithmetic, rounding, random number generation, and trigonometry.
Functions like abs(), pow(), sqrt(), and round() help in basic calculations.
You can also generate random values using rand() or random_int().
Advanced functions include sin(), log(), exp(), and number formatting with number_format().
These are useful in real-world tasks like billing, statistics, games, or calculators.

File Name: math-functions.php

1. Basic Arithmetic

echo abs(-10);        // ➤ 10
echo pow(2, 3);       // ➤ 8 (2^3)
echo sqrt(16);        // ➤ 4
echo max(3, 7, 1);    // ➤ 7
echo min(3, 7, 1);    // ➤ 1

2. Rounding Functions

echo round(3.6);      // ➤ 4
echo floor(3.6);      // ➤ 3
echo ceil(3.2);       // ➤ 4

3. Random Numbers

echo rand();               // ➤ Random number
echo rand(100, 999);       // ➤ Random between 100 and 999

Use random_int(1, 10) for cryptographically secure random numbers (PHP 7+)

4. Trigonometric Functions

echo sin(deg2rad(30));     // ➤ 0.5
echo cos(deg2rad(60));     // ➤ 0.5
echo tan(deg2rad(45));     // ➤ 1

5. Logarithmic and Exponential

echo log(10);        // ➤ Natural log
echo log10(1000);    // ➤ Base-10 log ➝ 3
echo exp(1);         // ➤ e^1 ➝ ~2.718

6. Number Formatting

echo number_format(1234567.89); // ➤ 1,234,567.89
echo number_format(1234.56, 2, '.', ','); // ➤ 1,234.56

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