Return the base-10 logarithm of different numbers in PHP

Description

The following code shows how to return the base-10 logarithm of different numbers.

Example

  /*  w w w . j  av  a2s .  com*/
<?php
    echo(log10(2.7183) . "<br>");
    echo(log10(2) . "<br>");
    echo(log10(1) . "<br>");
    echo(log10(0));
?>

The code above generates the following result.