【下载文档:  PHP容器类的两种实现方式示例.txt 】

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PHP容器类的两种实现方式示例
本文实例讲述了PHP容器类的两种实现方式。分享给大家供大家参考，具体如下：
通过魔术方法实现
class
class MagicContainer{
private $ele;
function __construct()
{
$this->ele = [];
}
function __set($name, $value)
{
$this->ele[$name] = $value;
}
function __get($name)
{
return $this->ele[$name];
}
function __isset($name)
{
return isset($this->ele[$name]);
}
function __unset($name)
{
if(isset($this->ele[$name])){
unset($this->ele[$name]);
}
}
}
usage
$container = new MagicContainer();
$container->logger = function ($msg){
file_put_contents('info.log',$msg.PHP_EOL,FILE_APPEND);
};
$logger = $container->logger;
$logger('magic container works');
通过ArrayAccess接口实现
class
class ArrayContainer implements ArrayAccess {
private $elements;
public function __construct()
{
$this->elements = [];
}
public function offsetExists($offset){
return isset($this->elements[$offset]);
}
public function offsetGet($offset){
if($this->offsetExists($offset)){
return $this->elements[$offset];
}else{
return false;
}
}
public function offsetSet($offset, $value){
$this->elements[$offset] = $value;
}
public function offsetUnset($offset){
if($this->offsetExists($offset)){
unset($this->elements[$offset]);
}
}
}
usage
$container = new ArrayContainer();
$container['logger'] = function ($msg){
file_put_contents('info.log',$msg.PHP_EOL,FILE_APPEND);
};
$logger = $container['logger'];
$logger('array container works');
Container
class
class Container implements ArrayAccess {
private $elements;
public function __construct()
{
$this->elements = [];
}
public function offsetExists($offset){
return isset($this->elements[$offset]);
}
public function offsetGet($offset){
if($this->offsetExists($offset)){
return $this->elements[$offset];
}else{
return false;
}
}
public function offsetSet($offset, $value){
$this->elements[$offset] = $value;
}
public function offsetUnset($offset){
if($this->offsetExists($offset)){
unset($this->elements[$offset]);
}
}
function __set($name, $value)
{
$this->elements[$name] = $value;
}
function __get($name)
{
return $this->elements[$name];
}
function __isset($name)
{
return isset($this->elements[$name]);
}
function __unset($name)
{
if(isset($this->elements[$name])){
unset($this->elements[$name]);
}
}
}
usage
$container = new Container();
$container['logger'] = function ($msg){
file_put_contents('info.log',$msg.PHP_EOL,FILE_APPEND);
};
$logger = $container->logger;
$logger('container works');
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希望本文所述对大家PHP程序设计有所帮助。