PHP log10() Function

The log10() function is predefined php math function. It is used to returns the base-10 logarithm of a number.

Syntax:

Parameter	Description	Required/Optional
Number	Specifies the value to calculate the logarithm.	Required

Note: num is the input number with Base fixed base 10.

Example1

<?php
$num=5;
echo "Your number is: ".$num;
echo "<br>"."By using log10() function your number is : ".log($num);
?>

Output:

Your number is: 5
By using log10() function your number is : 1.6094379124341

Example2

<?php
$num=1.234;
echo "Your number is: ".$num;
echo "<br>"."By using log10() function your number is : ".log($num);
?>

Output:

Your number is: 1.234
By using log10() function your number is : 0.2102609254832

Example3

<?php
$num=1;
echo "Your number is: ".$num;
echo "<br>"."By using log10() function your number is : ".log($num);
?>

Output:

Your number is: 1
By using log10() function your number is : 0

Example4

<?php
$num=0;
echo "Your number is: ".$num;
echo "<br>"."By using log10() function your number is : ".log($num);
?>

Output:

Your number is: 0
By using log10() function your number is : -INF

Example5

<?php
$num=-1;
echo "Your number is: ".$num;
echo "<br>"."By using log10() function your number is : ".log($num);
?>

Output:

Your number is: -1
By using log10() function your number is : NAN

Next TopicPHP Math

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PHP log10() Function

Syntax:

Note: num is the input number with Base fixed base 10.

Example1

Example2

Example3

Example4

Example5

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