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PHP Manual

# The SplFloat class

(PECL spl_types >= 0.1.0)

## Introdução

The SplFloat class is used to enforce strong typing of the float type.

## Sinopse da classe

SplFloat extends SplType {
/* Constants */
const float __default = 0 ;
/* Métodos herdados */
SplType::__construct ([ mixed `$initial_value` [, bool `$strict` ]] )
}

## Constantes pré-definidas

`SplFloat::__default`

## Exemplos

Exemplo #1 SplFloat usage example

`<?php
$float = new SplFloat(3.154);
$newFloat = new SplFloat(3);
try {
$float = 'Try to cast a string value for fun';
} catch (UnexpectedValueException $uve) {
echo $uve->getMessage() . PHP_EOL;
}
echo $float . PHP_EOL;
echo $newFloat . PHP_EOL;
?>`

O exemplo acima irá imprimir:

    Value not a float
    3.154
    3

SplInt
SplEnum
SPL Types
PHP Manual