Math Log in PHP
In this article I explain the PHP math log function.
Introduction
The PHP math functions handle values within the range of integer and float types. In this article I describe PHP math log function.
PHP log() function
The PHP math log function is used to return the natural logarithm (base E) of a number.
Syntax
Parameters in log function
It takes two parameters; they are:
| Parameter |
Description |
| number |
It specifies a number. |
| base |
The optional logarithmic base to use (defaults to "e" and so to the natural logarithm). |
Example of log function
<?php
$val1=log(2);
$val2=log(0);
$val3=log(1.232);
$val4=log(1);
echo "log value of <b>2</b> is <b>$val1</b> <br />";
echo "log value of <b>0</b> is <b>$val2</b> <br />";
echo "log value of <b>1.232</b> is <b>$val3</b> <br />";
echo "log value of <b>1</b> is <b>$val4</b> <br />";
?>
Note: The code above is used to convert numbers to the natural logarithm (base E) of a number. So in the above example the numbers "2", "0", "1.232" and "1" are converted to the natural logarithm of the number.
Output
