# tablepress/3.4/libraries/vendor/PhpSpreadsheet/Calculation/MathTrig/Logarithms.php

TablePress – Tables in WordPress made easy, version 3.4. 103 lines.

- Page: https://pluginprobe.com/plugins/tablepress/3.4/code/libraries/vendor/PhpSpreadsheet/Calculation/MathTrig/Logarithms.php
- Raw: https://pluginprobe.com/plugins/tablepress/3.4/raw/libraries/vendor/PhpSpreadsheet/Calculation/MathTrig/Logarithms.php
- Modified: 2025-08-26T04:06:14+00:00

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```php
<?php

namespace TablePress\PhpOffice\PhpSpreadsheet\Calculation\MathTrig;

use TablePress\PhpOffice\PhpSpreadsheet\Calculation\ArrayEnabled;
use TablePress\PhpOffice\PhpSpreadsheet\Calculation\Exception;

class Logarithms
{
	use ArrayEnabled;

	/**
	 * LOG_BASE.
	 *
	 * Returns the logarithm of a number to a specified base. The default base is 10.
	 *
	 * Excel Function:
	 *        LOG(number[,base])
	 *
	 * @param mixed $number The positive real number for which you want the logarithm
	 *                      Or can be an array of values
	 * @param mixed $base The base of the logarithm. If base is omitted, it is assumed to be 10.
	 *                      Or can be an array of values
	 *
	 * @return array<mixed>|float|string The result, or a string containing an error
	 *         If an array of numbers is passed as an argument, then the returned result will also be an array
	 *            with the same dimensions
	 */
	public static function withBase($number, $base = 10)
	{
		if (is_array($number) || is_array($base)) {
			return self::evaluateArrayArguments([self::class, __FUNCTION__], $number, $base);
		}

		try {
			$number = Helpers::validateNumericNullBool($number);
			Helpers::validatePositive($number);
			$base = Helpers::validateNumericNullBool($base);
			Helpers::validatePositive($base);
		} catch (Exception $e) {
			return $e->getMessage();
		}

		return log($number, $base);
	}

	/**
	 * LOG10.
	 *
	 * Returns the result of builtin function log after validating args.
	 *
	 * @param mixed $number Should be numeric
	 *                      Or can be an array of values
	 *
	 * @return array<mixed>|float|string Rounded number
	 *         If an array of numbers is passed as an argument, then the returned result will also be an array
	 *            with the same dimensions
	 */
	public static function base10($number)
	{
		if (is_array($number)) {
			return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $number);
		}

		try {
			$number = Helpers::validateNumericNullBool($number);
			Helpers::validatePositive($number);
		} catch (Exception $e) {
			return $e->getMessage();
		}

		return log10($number);
	}

	/**
	 * LN.
	 *
	 * Returns the result of builtin function log after validating args.
	 *
	 * @param mixed $number Should be numeric
	 *                      Or can be an array of values
	 *
	 * @return array<mixed>|float|string Rounded number
	 *         If an array of numbers is passed as an argument, then the returned result will also be an array
	 *            with the same dimensions
	 */
	public static function natural($number)
	{
		if (is_array($number)) {
			return self::evaluateSingleArgumentArray([self::class, __FUNCTION__], $number);
		}

		try {
			$number = Helpers::validateNumericNullBool($number);
			Helpers::validatePositive($number);
		} catch (Exception $e) {
			return $e->getMessage();
		}

		return log($number);
	}
}

```