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;

?>

Program 2:

 

<?php

​

// PHP program to illustrate 

// doubleval() function

$var = '47.129mln';

$double_value = doubleval($var);

echo $double_value;

?>

Related Articles:

• PHP | floatval() Function
• PHP | boolval() Function

Reference:https://www.php.net/manual/en/function.doubleval.php