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floatval

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

floatval — Get float value of a variable

Description

floatval(mixed $value): float

Gets the float value of value.

Parameters

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.

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.

Changelog

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

Examples

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
?>

See Also