php calls classes in different directories
1. First, php puts classes in different directories relative to each other. Store the path in the array, and then use a loop to introduce the class
<?php header('Content-type:text/html;charset=utf-8'); //spl_autoload_register()参数是匿名函数 spl_autoload_register(function($ClassName){ //将不同路径的类文件的路径放入数组中; $arr = array( "./$ClassName.class.php", "./admin/controller/$ClassName.class.php" ); // 循环不同路径的类文件的数组 foreach ($arr as $filename) { if (file_exists($filename)) { require_once($filename); } } });
2. Use the new keyword to create an object and call it
$obj = new Student(); $obj->ShowInfo(); $obj2 = new Fruit(); $obj2->ShowInfo();
Class file: Name it Student.class.php
<?php header('Content-type:text/html;charset=utf-8'); final class Student{ const TILTLE = "3班"; private $name = "李立"; private $age = 20; public function __construct(){ echo "{$this->name}的年龄是{$this->age}<br>"; } public function ShowInfo(){ echo "{$this->name}的班级是".self::TILTLE."<br>"; } }
Class file: Named Fruit.class.php
<?php header('Content-type:text/html;charset=utf-8'); final class Fruit{ const TILTLE = "水果类"; private $name = "苹果"; private $price = '20元/kg'; public function __construct(){ echo "{$this->name}的价格是{$this->price}<br>"; } public function ShowInfo(){ echo "{$this->name}属于".self::TILTLE."<br>"; } }
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