Today, we will discuss the log() function in PHP. This function is used to calculate the natural logarithm of a number.

What is the log() Function?

The log() function in PHP is a built-in function that is used to calculate the natural logarithm of a number. The natural logarithm of a number is the logarithm to the base of the mathematical constant e, which is approximately equal to 2.718. The log() function takes a number as input and returns its natural logarithm.

How to Use the log() Function

Using the log() function in PHP is very simple. Here is an example of how to use the function:

$number = 10;

// Calculate the natural logarithm of the number using the log() function
$result = log($number);

// Output the result
echo $result;

In this example, we set a variable to a number. We then call the log() function with the variable as a parameter to calculate its natural logarithm. Finally, we store the result in another variable and output it to the screen.


The log() function in PHP is a useful tool for any PHP developer working with logarithmic functions. By using this function, you can calculate the natural logarithm of a number, which can be useful in a variety of applications. We hope that this guide has been helpful in understanding how to use the log() function in your PHP code.

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