BCMath Arbitrary Precision Mathematics

<?php
$num1 = 0; // (string) 0 => '0'
$num2 = -0.000005; // (string) -0.000005 => '-5.05E-6'
echo bcadd($num1, $num2, 6); // => '0.000000'

setlocale(LC_NUMERIC, 'de_DE'); // uses a decimal comma
$num2 = 1.2; // (string) 1.2 => '1,2'
echo bcsub($num1, $num2, 1); // => '0.0'
?>

• Installing/Configuring
  • Installation
  • Runtime Configuration
• BC Math Functions
  • bcadd — Add two arbitrary precision numbers
  • bcceil — Round up arbitrary precision number
  • bccomp — Compare two arbitrary precision numbers
  • bcdiv — Divide two arbitrary precision numbers
  • bcdivmod — Get the quotient and modulus of an arbitrary precision number
  • bcfloor — Round down arbitrary precision number
  • bcmod — Get modulus of an arbitrary precision number
  • bcmul — Multiply two arbitrary precision numbers
  • bcpow — Raise an arbitrary precision number to another
  • bcpowmod — Raise an arbitrary precision number to another, reduced by a specified modulus
  • bcround — Round arbitrary precision number
  • bcscale — Set or get default scale parameter for all bc math functions
  • bcsqrt — Get the square root of an arbitrary precision number
  • bcsub — Subtract one arbitrary precision number from another
• BcMath\Number — The BcMath\Number class
  • BcMath\Number::add — Adds an arbitrary precision number
  • BcMath\Number::ceil — Rounds up an arbitrary precision number
  • BcMath\Number::compare — Compares two arbitrary precision numbers
  • BcMath\Number::__construct — Creates a BcMath\Number object
  • BcMath\Number::div — Divides by an arbitrary precision number
  • BcMath\Number::divmod — Gets the quotient and modulus of an arbitrary precision number
  • BcMath\Number::floor — Rounds down an arbitrary precision number
  • BcMath\Number::mod — Gets the modulus of an arbitrary precision number
  • BcMath\Number::mul — Multiplies an arbitrary precision number
  • BcMath\Number::pow — Raises an arbitrary precision number
  • BcMath\Number::powmod — Raises an arbitrary precision number, reduced by a specified modulus
  • BcMath\Number::round — Rounds an arbitrary precision number
  • BcMath\Number::__serialize — Serializes a BcMath\Number object
  • BcMath\Number::sqrt — Gets the square root of an arbitrary precision number
  • BcMath\Number::sub — Subtracts an arbitrary precision number
  • BcMath\Number::__toString — Converts BcMath\Number to string
  • BcMath\Number::__unserialize — Deserializes a data parameter into a BcMath\Number object