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>";
}
}For more PHP related knowledge, please visit PHP Chinese website!
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