(PHP 4 >= 4.2.0, PHP 5)
floatval — Get float value of a variable
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.
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 floatval() Example
<?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
?>