PHP Unconference Europe 2015

کلاس SplEnum

Introduction

SplEnum تونایی ایجاد و شبیه‌سازی شی "Enum" در PHP را می‌دهد.

Class synopsis

abstract SplEnum {
/* Methods */
__construct ( void )
}

Table of Contents

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User Contributed Notes 1 note

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6
No Such Alias
4 years ago
Here's a clearer example usage in case anyone else finds the
current documentation confusing (as I did).

<?php
class Fruit extends SplEnum
{
 
// If no value is given during object construction this value is used
 
const __default = 1;
 
// Our enum values
 
const APPLE     = 1;
  const
ORANGE    = 2;
}

$myApple   = new Fruit();
$myOrange  = new Fruit(Fruit::ORANGE);
$fail      = 1;

function
eat(Fruit $aFruit)
{
  if (
Fruit::APPLE == $aFruit) {
    echo
"Eating an apple.\n";
  } elseif (
Fruit::ORANGE == $aFruit) {
    echo
"Eating an orange.\n";
  }
}

eat($myApple);  // Eating an apple.
eat($myOrange); // Eating an orange.

eat($fail); // PHP Catchable fatal error:  Argument 1 passed to eat() must be an instance of Fruit, integer given

?>
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