PHP log() - Math Functions
What is log Function?
Explanation
The "log()" function returns the natural logarithm of a number.
log(x,base)
In the above syntax "x" is the number for which to find the natural logarithm, "base" is an optional value.Example:>
Syntax:
log(x,base)
In the above syntax "x" is the number for which to find the natural logarithm, "base" is an optional value.
Example:>
<?php
echo(log(2.7183)."<br />");
echo(log(-1));
?> Result :
1.00000668491
NAN
In the above example the negative value returns NAN value.
<?php
echo(log(2.7183)."<br />");
echo(log(-1));
?>
1.00000668491
NAN
