PHP | doubleval() Function

The doubleval() is an inbuilt function in PHP which is used to get a float value of a variable. This function is an alias of floatval().

Syntax:

doubleval ( $variable_name )

Parameters: This function accepts one parameter $variable_name as shown in above syntax. It is a mandatory parameter. This parameter specifies the name of variable that is to be converted. This parameter can be of mixed type example integer, string, etc.

Return Value: It returns float value of given variable.

Below programs illustrate the use of doubleval() function in PHP:
Program 1:

<?php

// PHP program to illustrate
// doubleval() function
$var = '41.68127E3';
$double_value = doubleval($var);
echo $double_value;
?>

Output:

41681.27

Program 2:

<?php

// PHP program to illustrate
// doubleval() function
$var = '47.129mln';
$double_value = doubleval($var);
echo $double_value;
?>

Output:

47.129

Reference:http://php.net/manual/en/function.doubleval.php