How can BC-Math be activated or compiled in PHP to use bcdiv()?

To use the `bcdiv()` function in PHP, you need to activate the BC-Math extension. This extension provides arbitrary precision arithmetic functions, including `bcdiv()` for division. To activate BC-Math, you can either compile PHP with the `--enable-bcmath` flag or enable it in your php.ini file by adding `extension=bcmath.so` for Unix-based systems or `extension=php_bcmath.dll` for Windows systems.

// Enable BC-Math extension in php.ini
// For Unix-based systems
// extension=bcmath.so

// For Windows systems
// extension=php_bcmath.dll

// Now you can use bcdiv() function
$div_result = bcdiv('10', '3', 2); // 3.33
echo $div_result;