超越數字的界限：PHP BCMath擴展指南

$num1 = "123.45";
$num2 = "67.89";

// 加法
$sum = bcadd($num1, $num2);
echo "Sum: $sum
"; // 输出：191.34

// 减法
$difference = bcsub($num1, $num2);
echo "Difference: $difference
"; // 输出：55.56

// 乘法
$product = bcmul($num1, $num2);
echo "Product: $product
"; // 输出：8353.265

// 除法
$quotient = bcdiv($num1, $num2);
echo "Quotient: $quotient
"; // 输出：1.8156521739130435

// 比较两个数字
$result = bccomp($num1, $num2);
if ($result > 0) {
echo "Num1 is greater than Num2";
} elseif ($result < 0) {
echo "Num1 is less than Num2";
} else {
echo "Num1 is equal to Num2";
}

// 计算数字的幂
$power = bcpow($num1, 2);
echo "Power: $power
"; // 输出：15227.5625

// 计算数字的平方根
$square_root = bcmath_sqrt($num1);
echo "Square Root: $square_root
"; // 输出：11.11111111111111