Get float value of a variable

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get_defined_vars
Variable handling Functions
PHP Manual

# floatval

(PHP 4 >= 4.2.0, PHP 5)

floatval — Get 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

- boolval() - Get the boolean value of a variable
- intval() - Get the integer value of a variable
- strval() - Get string value of a variable
- settype() - Set the type of a variable
- Type juggling

empty
get_defined_vars
Variable handling Functions
PHP Manual