82 lines
1.5 KiB
PHP
82 lines
1.5 KiB
PHP
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<?php
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/**
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* Registry class to pass global variables between classes.
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*/
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abstract class Registry {
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/**
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* Object registry provides storage for shared objects
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*
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* @var array
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*/
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private static $registry = array();
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/**
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* Adds a new variable to the Registry.
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*
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* @param string $key Name of the variable
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* @param mixed $value Value of the variable
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* @throws Exception
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* @return bool
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*/
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public static function set($key, $value) {
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if (!isset(self::$registry[$key])) {
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self::$registry[$key] = $value;
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return true;
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} else {
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throw new Exception('Unable to set variable `' . $key . '`. It was already set.');
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}
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}
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/**
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* Returns the value of the specified $key in the Registry.
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*
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* @param string $key Name of the variable
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* @return mixed Value of the specified $key
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*/
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public static function get($key)
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{
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if (isset(self::$registry[$key])) {
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return self::$registry[$key];
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}
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return null;
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}
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/**
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* Returns the whole Registry as an array.
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*
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* @return array Whole Registry
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*/
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public static function getAll()
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{
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return self::$registry;
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}
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/**
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* Removes a variable from the Registry.
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*
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* @param string $key Name of the variable
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* @return bool
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*/
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public static function remove($key)
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{
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if (isset(self::$registry[$key])) {
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unset(self::$registry[$key]);
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return true;
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}
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return false;
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}
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/**
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* Removes all variables from the Registry.
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*
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* @return void
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*/
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public static function removeAll()
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{
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self::$registry = array();
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return;
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}
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}
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?>
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