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log10

Name

log10 — Calculates the base 10 logarithm of a number.

Synopsis

float log10(num); float num: Number from which to derive the base 10 logarithm

Returns

Base 10 logarithm of a number

Description

log10() returns the base 10 logarithm of the number given by num .

Version

PHP 3, PHP 4

Example

Example 678. Calculate the base 10 logarithm

echo "The base 10 logarithm of 10 is ", log10(10);

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