PHP Manual: Get float value of a variable

float floatval(mixed $value)

Gets the float value of value.

value: May be any scalar type. floatval should not be used on objects, as doing so will emit an E_WARNING 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.

Version	Description
8.0.0	The error level when converting from object was changed from `E_NOTICE` to `E_WARNING`.

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
?>

floatval