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PHP: log10() function

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

View the example in the browser

See also

PHP Function Reference

Previous: lcg_value
Next: log1p



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https://www.w3resource.com/php/function-reference/log10.php