find the base 10 logarithm of a number in php

To find the base 10 logarithm of a number in PHP, you can use the log10() function from the PHP Math library.

Here's an example code snippet:

main.php
$num = 100;
$log = log10($num);
echo "The base 10 logarithm of $num is $log";
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4 lines

This will output:

main.php
The base 10 logarithm of 100 is 2
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2 lines

In this example, we first declare a variable $num and set it to 100. We then call the log10() function with $num as its argument and assign the result to $log. Finally, we print out the result using echo.