Divide two arbitrary precision numbers

# bcdiv

(PHP 4, PHP 5, PHP 7, PHP 8)

bcdiv — Divide two arbitrary precision numbers

### Description

bcdiv(string `$num1`, string `$num2`, ?int `$scale` = `null`): string

Divides `num1` by `num2`.

### Parameters

`num1`

  The dividend, as a string.

`num2`

  The divisor, as a string.

`scale`
  This parameter is used to set the number of digits after the decimal place in the result. If `null`, it will default to the default scale set with bcscale(), or fallback to the value of the `bcmath.scale` INI directive.

### Return Values

Returns the result of the division as a string.

### Errors/Exceptions

This function throws a ValueError in the following cases:

- `num1` or `num2` is not a well-formed BCMath numeric string.
- `scale` is outside the valid range.

This function throws a DivisionByZeroError exception if `num2` is `0`.

### Changelog

Version | Description
--- | ---
8.0.0 | `scale` is now nullable.
8.0.0 | Dividing by `0` now throws a DivisionByZeroError exception instead of returning `null`.

### Examples

Example #1 bcdiv() example

`<?php
echo bcdiv('105', '6.55957', 3); // 16.007
?>`

### See Also

- bcdivmod() - Get the quotient and modulus of an arbitrary precision number
- bcmod() - Get modulus of an arbitrary precision number
- bcmul() - Multiply two arbitrary precision numbers
- BcMath\Number::div() - Divides by an arbitrary precision number

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