phpHomeworks/designPatternSingleton.php at master · randomrandom/phpHomeworks · GitHub

45 lines (37 loc) · 665 Bytes

<?php

class Database

{

private $name;

private $pool;

function __construct($name_in, $pool_in)

{

$this->name = $name_in;

$this->pool = $pool_in;

}

function query()

{

echo 'The database is performing a query <br />\n';

}

class DatabaseSingleton

{

private static $theDatabase;

private static $pool = new array();

function __construct()

{

echo 'The database is created<br />\n';

}

function getDatabase()

{

if(!self::$theDatabase)

{

self::$theDatabase = new Database("databse", $pool);

}

return self::$theDatabase;

}

function query()

{

self::$theDatabase->query();

}

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