错误在另一个命名空间中自动加载名称空间

Question

我尝试从 c_index.php调用 m_newEmployee时会遇到以下错误。

我尝试了：

$employee = new AppmodelnewEmployee;

，但这在m_newEmployee中引起了另一个奇怪的错误。

当我这样做时，函数getEmployees()不能用于创建任何对象。

c_index.php

<?php
namespace appcontroller;
use appmodel;
require_once "../task/vendor/autoload.php";
  /**
   *
   */
  class c_index
  {
      function loadEmployees()
      {
         $employee = new m_newEmployee;
         echo $employee->getEmployees();
      }

  }

 ?>

m_newemployee.php

<?php
namespace appmodel;
require_once "../task/vendor/autoload.php";
/**
 *
 */
class m_newEmployee
{
    function createTable()
    {
        $database = new m_database;
        $conn = $database->connect();
        // sql to create table
        $sql = "CREATE TABLE IF NOT EXISTS employees (
        id INT(6) UNSIGNED AUTO_INCREMENT PRIMARY KEY,
        employee VARCHAR(255) NOT NULL,
        created TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
        )";
        if ($conn->query($sql) === TRUE) {
            //echo "Table MyGuests created successfully";
        } else {
            echo "Error creating table: " . $conn->error;
        }
        $conn->close();
    }

  function createEmployee($employee)
  {
      $this->createTable();
       $sql = "INSERT INTO `employees`( `employee`) VALUES ('$employee')";
       if ($conn->query($sql) === TRUE) {
           $result = true;
           return $result;
       } else {
           echo "Error inserting  " . $conn->error;
       }
  }

  function getEmployees()
  {
      $database = new m_database;
      $conn = $database->connect();
      $sql = "SELECT * FROM `employees`";
      if ($result = $conn->query($sql) === TRUE) {
            //Initialize array variable
            $dbdata = array();
          //Fetch into associative array
            while ( $row = $result->fetch_assoc())  {
            $dbdata[]=$row;
            }
          //Print array in JSON format
           return json_encode($dbdata);
      }
      else {
          echo "Error inserting  " . $conn->error;
      }
    }
  }

composer.json

{
  "autoload":{
    "psr-4":{
      "":"app",
       "App\":"app"
    }
}
}

致命错误：未被发现的错误：c： xampp htdocs task task app controller contex.php中找不到类" m_newemployee"。php(14(：app controller c_index-> loademployees((＃1 {main}在c： xampp htdocs task task task app app contranter controlter c_index.php中，第16行16

>

Answer 1

导入命名空间(use appmodel;(并不意味着您可以直接使用该名称空间中的模型。您需要指定命名空间(使用导入的简短名称(：

namespace appcontroller;
use appmodel;
// ...
$employee = new modelm_newEmployee();

或直接导入模型：

namespace appcontroller;
use appmodelm_newEmployee;
// ...
$employee = new m_newEmployee();