PHP: log10() function

Last update on August 19 2022 21:51:15 (UTC/GMT +8 hours)

Description

The log10() function returns the base-10 logarithm of a number.

Version:

(PHP 4 and above)

Syntax:

log10(num)

Parameter:

Name	Description	Required / Optional	Type
num	The argument to process.	Required	Float

Return value

The base-10 logarithm of num.

Value Type: Float.

Example:

<?php
echo(log10(2) . "<br />");
echo(log10(1.234) . "<br />");
echo(log10(0) . "<br />");
echo(log10(1) . "<br />");
?>

Output:

0.301029995664
0.0913151596972
-INF
0

See also

PHP Function Reference

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