International PHP Conference 2015

The SplEnum class

(PECL spl_types >= 0.1.0)

Introduzione

SplEnum gives the ability to emulate and create enumeration objects natively in PHP.

Sommario dellla classe

SplEnum extends SplType {
/* Constants */
const NULL __default = null ;
/* Metodi */
public array getConstList ([ bool $include_default = false ] )
/* Metodi ereditati */
SplType::__construct ([ mixed $initial_value [, bool $strict ]] )
}

Costanti predefinite

SplEnum::__default

Esempi

Example #1 SplEnum usage example

<?php
class Month extends SplEnum {
    const 
__default self::January;
    
    const 
January 1;
    const 
February 2;
    const 
March 3;
    const 
April 4;
    const 
May 5;
    const 
June 6;
    const 
July 7;
    const 
August 8;
    const 
September 9;
    const 
October 10;
    const 
November 11;
    const 
December 12;
}

echo new 
Month(Month::June) . PHP_EOL;

try {
    new 
Month(13);
} catch (
UnexpectedValueException $uve) {
    echo 
$uve->getMessage() . PHP_EOL;
}
?>

Il precedente esempio visualizzerĂ :

6
Value not a const in enum Month

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