<?php 
    // 复合类型：

        // 数组：array
        $a = array(123,123.456,"我要自学",true);
        $b = [123,123.456,"我要自学",true,];
        var_dump($a);
        echo '<br>';
        var_dump($b);
        echo '<br>';
        echo $a[1];
        echo '<br>';

        // 对象：object
        class zx{
            public $abc = "www.hrkkid.com";
            function fun(){
                echo "欢迎来到PHP课堂";
            }
        };
        $c = new zx();
        var_dump($c);
        echo "<br>";
        echo $c->abc;
        echo "<br>";
        echo $c->fun();
?>