Question

我在PHP中遇到以下致命错误：

致命错误：在第37行的C：\ wamp \ www \ 12.01.2015 Class 01 \ Coffee Website \ Controller \ CoffeeController.php中调用未定义的方法CoffeeModel :: GetCoffeeByType（）

Call Stack
#   Time    Memory  Function    Location
1   0.0030  142264  {main}( )   ..\Coffee.php:0
2   0.0130  162800  CoffeeController->CreateCoffeeTables( ) ..\Coffee.php:15

以上错误的代码如下所示：

function CreateCoffeeTables($types)
{
    $coffeeModel = new CoffeeModel();

    $coffeeArray = $coffeeModel->GetCoffeeByType($types);
    $result = "";

    // Generate a coffeeTable for each coffeeEntity in array
    foreach ($coffeeArray as $key => $coffee) {
        $result = $result .
            "<table class = 'coffeeTable'>
            <tr>
            <th rowspan='6' width= '150px' ><img runat = 'server' src = '$coffee->image'/></th>
            <th width = '75px' >Name: </th>
            <td>$coffee->name</td>
            </tr>

            <tr>
            <th>Type: </th>
            <td>$coffee->type</td>
            </tr>

            <tr>
            <th>Price: </th>
            <td>$coffee->price</td>
            </tr>

            <tr>
            <th>Roast: </th>
            <td>$coffee->roast</td>
            </tr>

             <tr>
            <th>Origin: </th>
            <td>$coffee->country</td>
            </tr>

            <tr>
            <td colspan='2' >$coffee->review</td>
            </tr>

             </table>";
    }
    return $result;
}

在此代码中，存在CoffeeModel类

<?php

require ("Entities/CoffeeEntity.php");

// contains database related code for the coffee type

class CoffeeModel
{

  //  Get all coffee types from the database and return them in an array

function GetCoffeeTypes()

{

 require 'Credentials.php';

 //Open connection and Select database

 mysql_connect($host, $user, $password) or die (mysql_error());

 mysql_select_db($database);

 $result = mysql_query("SELECT DISTINCT type FROM coffee") or die(mysql_error());

 $types = array();


 // Get data from databse

 while($row = mysql_fetch_array($result))

 {

    array_push($types, $row[0]);


 }

// Close connection and return

  mysql_close();

  return $types;  

}
}

// GET coffeeEntity objects from the database and return them in an array.

function GetCoffeeByType($type)

{

require 'Credentials.php';

// Open connection and select database

mysql_connect($host, $user, $password) or die (mysql_error());

 mysql_select_db($database);

 $query = "SELECT * FROM coffee WHERE LIKE '$type'";

 $result = mysql_query($query) or die (mysql_error());

 $coffeeArray = array();

 //GET Data from Database

 while ($row = mysql_fetch_array($result))

 {

    $name = $row[1];

    $type = $row[2];

    $price = $row[3];

    $roast = $row[4];

    $country = $row[5];

    $image = $row[6];

    $review = $row[7];


    // Create Coffee objects and store them in an array

    $coffee = new CoffeeEntity (-1, $name, $type, $price, $roast, $country, $image, $review);

    array_push($coffeeArray, $coffee);

 }

 // CLose connection and return result

 mysql_close();

 return $coffeeArray;


 }

我该如何解决这个问题？

Answer 1

在GetCoffeeTypes()方法之后，您似乎过早关闭了课程：

  return $types;  

}
}
^ here

// GET coffeeEntity objects from the database and return them in an array.

您需要将该右括号移动到文件的末尾，因为现在您要定义一个全局函数而不是类方法。

Answer 2

好的，只关注发布的问题，你的问题是你在第一个方法之后关闭了课程：

}
} <---- this closing bracket is terminating the class

// GET coffeeEntity objects from the database and return them in an array.

function GetCoffeeByType($type)

{

只需将一个括号移动到文件的末尾即可。接下来就是了解班级组织，但这是另一个故事。

调用未定义的方法;怎么修？

2 个答案: