PHP log10 () function
Examples
Returns the number of different numbers to base 10:
<?php
echo(log10(2.7183) . "<br>");
echo(log10(2) . "<br>");
echo(log10(1) . "<br>");
echo(log10(0));
?>
echo(log10(2.7183) . "<br>");
echo(log10(2) . "<br>");
echo(log10(1) . "<br>");
echo(log10(0));
?>
Running instance »
Definition and Usage
log10 () function returns the logarithm of a number to base 10.
grammar
log10( number );
参数 | 描述 |
---|---|
number | 必需。规定需计算对数的值。 |
technical details
return value: | number logarithm to the base 10. |
---|---|
Return type: | Float |
PHP version: | 4+ |
PHP Math Reference