php魔术方法
Posted 雨落知音
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了php魔术方法相关的知识,希望对你有一定的参考价值。
<?php // Declare a simple class class TestClass { public $foo; public function __construct($foo) { $this->foo = $foo; } public function __toString() { return $this->foo; } } $class = new TestClass(‘Hello‘); echo $class; // Hello
?>
class CallableClass { function __invoke($x) { var_dump($x); } } $obj = new CallableClass; $obj(5);//5 var_dump(is_callable($obj));//is_callable — 检测参数是否为合法的可调用结构 true
<?php class Connection { protected $link; private $server, $username, $password, $db; public function __construct($server, $username, $password, $db) { $this->server = $server; $this->username = $username; $this->password = $password; $this->db = $db; $this->connect(); } private function connect() { $this->link = mysql_connect($this->server, $this->username, $this->password); mysql_select_db($this->db, $this->link); } public function __sleep() { return array(‘server‘, ‘username‘, ‘password‘, ‘db‘); } public function __wakeup() { $this->connect(); } } ?>
<?php class MethodTest { public function __call($name, $arguments) { // 注意: $name 的值区分大小写 echo "Calling object method ‘$name‘ " . implode(‘, ‘, $arguments). "\n"; } /** PHP 5.3.0之后版本 */ public static function __callStatic($name, $arguments) { // 注意: $name 的值区分大小写 echo "Calling static method ‘$name‘ " . implode(‘, ‘, $arguments). "\n"; } } $obj = new MethodTest; $obj->runTest(‘in object context‘); MethodTest::runTest(‘in static context‘); // PHP 5.3.0之后版本 ?>
以上是关于php魔术方法的主要内容,如果未能解决你的问题,请参考以下文章