Source Code Pro字体 easyphp
命名空间:隔离类和函数,php5.3以后
//test5.php
php namespace Test5;//命名空间必须是程序脚本的第一条语句,除了declare function test(){ echo __FILE__; }
//test6.php
php namespace Test6; function test(){ echo __FILE__; }
require 'test5.php';
require 'test6.php';
Test5\test();
Test6\test();
类自动载入:php5.2以后
spl_autoload_register('autoload1');
Test5::test();
Test6::test();
function autoload1($class){
require __DIR__.'//m.sbmmt.com/m/'.$class.'.php';
}
PSR-0规范:
开发符合PSR-0规范的基础框架
spl标准库:
PHP链式操作:
php namespace Baobab; class Database{ function where($where){ return $this; } function order($order) { return $this; } function limit($limit){ return $this; } } ?>
//index.php
$db = new Baobab\Database();
$db->where('id = 1')->order('order by id')->limit(1);
魔术方法:
object.php
php namespace Baobab; class Object{ protected $array = array(); function __set($key, $value){ $this->array[$key] = $value; } function __get($key){ //echo __METHOD__; return $this->array[$key]; } function __call($func, $param){ //var_dump($func,$param); return 'magic function'; } static function __callstatic($func, $param) { //var_dump($func, $param); return 'magic static function'; } function __toString(){ return __CLASS__; } function __invoke($param) { return var_dump($param); } }
index.php
$obj = new baobab\Object(); $obj->title = 'hello'; echo $obj->title; echo $obj->test1('hello', 123); echo $obj::test1('hello1', 1234); echo $obj; echo $obj('test1');
1、三种基本设计模式
Factory.php
php namespace Baobab; class Factory{ static function createDatabase(){ $db = new Database(); return $db; } }
index.php
$db = Baobab\Factory::createDatabase();
$db1 = Baobab\Factory::createDatabase();
$db->limit($limit);
Database.php
php namespace Baobab; class Database{ protected static $db; private function __construct(){ } static function getInstance(){ if (self::$db){ return self::$db; }else{ //self是指向类本身,也就是self是不指向任何已经实例化的对象(::域运算符号) self::$db = new self(); return self::$db; } }
index.php
$db = Baobab\Database::getInstance();
Register.php
php namespace Baobab; class Register{ protected static $objects; static function set($alias, $object){ self::$objects[$alias] = $object; } static function _unset($alias) { unset(self::$objects[$alias]); } static function get($name) { return self::$objects[$name]; } }
//将db注册到注册树上 Register::set('db1', $db);
index.php
$db = Baobab\Register::get('db1');
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