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PHP Manual :: floatval



empty || get_defined_vars || Variable handling Functions || PHP Manual

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

floatvalGet float value of a variable

Description

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.

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



empty || get_defined_vars || Variable handling Functions || PHP Manual
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