floatval in PHP

floatval — Get float value of a variable

Syntax:float floatval ( mixed $var )
Gets the float value of var.
Parameters:var
    May be any scalar type. 
        floatval() should not be used on objects, as doing so will emit an E_NOTICE level error and return 1.
Return Values:
The float value of the given variable. 
        Empty arrays return 0, non-empty arrays return 1.
Strings will most likely return 0 although this depends on the leftmost characters of the string. 
        The common rules of float casting apply.

Example #1
<?php
$var = '122.34343The';
$float_value_of_var = floatval($var);
echo $float_value_of_var; // 122.34343
?>

Example #2 floatval() non-numeric leftmost characters Example
<?php
$var = 'The122.34343';
$float_value_of_var = floatval($var);
echo $float_value_of_var; // 0
?>




doubleval — Alias of floatval