php - fatal error : Call to undefined function getRecords() in C:\xampp\htdocs\Employees. php 第 101 行

标签 php mysql function

我已阅读有关此错误的信息，但似乎没有一个答案适用于我的具体问题。我的代码有三个目的。我正在创建一个填充数据库的表单。然后在同一页面上，我希望能够使用第二种形式搜索数据库并使用第三种形式删除记录。我正在一次一个地解决这些问题，因此我在下面发布的代码不完整，但表格都在那里。如果您想知道为什么有删除表单而没有删除代码。 :-P。任何人都可以看到我的函数 buildQuery 做错了什么吗？我相信这是 getRecords 问题的关键。或者不是？

<html>
<body>

<?php error_reporting (E_ALL ^ E_NOTICE);
$keyword = $_GET['keyword']; ?>

<?php
$con = mysql_connect("localhost", "employees", "employeepw");
if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }

if (mysql_query("CREATE DATABASE IF NOT EXISTS employees",$con))
  {
  echo "Database created";
  }
else
  {
  echo "Error creating database: " . mysql_error();
  }

mysql_select_db("employees", $con);
$sql = "CREATE TABLE employeeinfo
(
personID int NOT NULL AUTO_INCREMENT,
PRIMARY KEY(personID),
FirstName varchar(15),
LastName varchar(15),
Phone varchar(15),
Email varchar(15),
Department varchar(15),
Position varchar(15),
)";

mysql_query("INSERT INTO employeeinfo (FirstName, LastName, Phone, Email, Department, Position)
VALUES ('firstname', 'lastname', 'phone', 'email', 'department', 'position')");

mysql_query($sql,$con);

        function buildQuery() {

        $keyword = $_GET['keyword'];

        $sql = "SELECT * from employeeinfo WHERE
                (
                firstname LIKE '%$keyword%'
                OR
                lastname LIKE '%$keyword%'
                OR
                phone LIKE '%$keyword%'
                OR
                email LIKE '%$keyword%'
                OR
                department LIKE '%$keyword%'
                OR
                position LIKE '%$keyword%'
                )";

        return $sql;

        mysql_close($con);

        } ?>

        <form action="Employees.php" method=get>
        <fieldset>
        <legend>Submit Employee Info</legend>
        Firstname: <input type="text" name="firstname" />
        Lastname: <input type="text" name="lastname" />
        Phone: <input type="text" name="phone" />
        Email: <input type="text" name="email" />
        Department: <input type="text" name="department" />
        Position: <input type="text" name="position" />
        <input type=submit name=submit value=Submit />
        </fieldset>
        </form>

        <form action="Employees.php" method=get>
        <fieldset>
        <legend>Search Employee Info</legend>
        <label for="keyword">Enter Keyword</label>
        <input id="keyword" name="keyword" value="<?php echo "$keyword"; ?>" />
        <input type=submit name=submit value=Search />
        </fieldset>
        </form>

        <form action="Employees.php" method=get>
        <fieldset>
        <legend>Delete Employee Info</legend>
        <label for="keyword">Enter Keyword</label>
        <input id="keyword" name="keyword" value="<?php echo "$keyword"; ?>" />
        <input type=submit name=submit value=Delete />
        </fieldset>
        </form>

        <?

                $query = buildQuery();

                $records = getRecords($query); //error is in this line

                while($row = mysql_fetch_array($records)){ ?>

        <table>

        <tbody>
        <table border='1'>

        <tr>
        <td><?= $row['firstname']; ?></td>
        <td><?= $row['lastname']; ?></td>
        <td><?= $row['phone']; ?></td>
        <td><?= $row['email']; ?></td>
        <td><?= $row['department']; ?></td>
        <td><?= $row['position']; ?></td>
        <td><a href="Employees.php">Return to Search</a></td>
        </tr>

        <? }

        ?>

</tbody>

</table>

</body>
</html>

最佳答案

PHP 无法找到您的 getRecords() 函数。您是否包含了定义此函数的文件？

编辑:

您应该真正考虑保护您发布的数据，以及一般代码的清洁度。最好直接使用 mysql 提供的函数，而不是将它们包装在仅适用于一种情况的函数中。

而且:为什么你每次都要构建整个员工信息表，或者至少检查它是否存在？这应该是你做过一次，然后就忘记的事情。然后删除该代码，因为它很困惑。

在投入之前，您应该考虑一下这一切在逻辑上应该如何运作。这基本上是一个员工管理系统？看起来您希望能够:添加新员工、搜索员工、编辑员工和删除员工。这是一个基本的实现，它缺少添加员工的功能。我还没有对此进行测试，但我希望它能为您指明正确的方向:

    <?php
/* Employees.php */

include('dbfactory.php');
include('header.php');



if(isset($_GET['do']) && (!empty($_GET['do']))){

    switch($_GET['do']){

        case 'search':
            //The form action is appended with a query string, so we can handle multiple cases in process.php
            ?>
                <form action="process.php?do=runsearch" method="POST">
                <fieldset>
                <legend>Search Employee Info</legend>
                <label for="keyword">Enter Keyword</label>
                <input id="keyword" name="keyword" value="" />
                <input type="submit" name="submit" value="Search" />
                </fieldset>
                </form>
            <?php


        break;

        case 'edit':
            //Make sure that the employee id has been set!
            if(isset($_GET['eid']) && (!empty($_GET['eid']))){

                //Get the DB connection
                $db = ConnectionFactory::getFactory()->getConnection();

                //Set up the query with a ? placeholder
                $sql = "Select * from employeeinfo WHERE personid = ? LIMIT 1";

                $stmt = $db->prepare($sql); 
                    //Bind the question mark with the Employee ID, as an Integer ONLY
                    $stmt->bindParam(1, $_GET['eid'], PDO::PARAM_INT);

                    $stmt->execute();


                /* Get an array of the result */
                $result = $stmt->fetch(PDO::FETCH_ASSOC);

                /* Make an array of friendly names associated with the mysql fields */
                if(count($result) > 0){
                    //Set up friendly names:
                    $fnames = array('firstname' => 'First Name',
                                'lastname' => 'Last Name',
                                'phone' => 'Phone Number',
                                'email' => 'Email Address',
                                'department' => 'Department',
                                'position' => 'Position');

                    /* Start the form, and make a hidden field with the employee id we want to edit.*/
                    ?>
                    <form action="process.php?do=saveedits" method="POST">
                    <input type="hidden" name="personid" value="<?=$result['personid']?>" />
                    <?php

                    /* Unset the person id, because we already used it */
                    unset($result['personid']);

                    //*Fill the fields with values from the database, if a friendly name is found, it will be used as the label*/
                    foreach($result as $key => $value){
                        ?>
                        <label for="<?=$key?>"><?=(isset($fnames["$key"]) ? $fnames["$key"] : $key)?></label>
                        <input id="<?=$key?>" name="<?=$key?>" value="<?=$value?>" />
                        <br>
                        <?php                       
                    }

                    ?>
                    <input type="submit" value="Modify Employee" >
                    </form>
                    <?php



                }
                else{
                    /* Couldnt find that employee in the DB */
                    ?>
                    <h2>Error, Employee Not Found</h2>
                    <?php
                    }
            }

        break;

        case 'new':
            //Make sure that the employee id has been set!

                /* Make an array of friendly names associated with the mysql fields */

                    //Set up friendly names:
                    $fnames = array('firstname' => 'First Name',
                                'lastname' => 'Last Name',
                                'phone' => 'Phone Number',
                                'email' => 'Email Address',
                                'department' => 'Department',
                                'position' => 'Position');

                    /* Start the form, and make a hidden field with the employee id we want to edit.*/
                    ?>
                    <form action="process.php?do=savenew" method="POST">    
                    <?php

                    //*Fill the fields with values from the database, if a friendly name is found, it will be used as the label*/
                    foreach($fnames as $key => $value){
                        ?>
                        <label for="<?=$key?>"><?=$value?></label>
                        <input id="<?=$key?>" name="<?=$key?>" />
                        <br>
                        <?php   

                    }

                    ?>
                    <input type="submit" value="Create New Employee" >
                    </form>
                    <?php


        break;


        case 'delete':

            if(isset($_GET['eid']) && (!empty($_GET['eid']))){
            $db = ConnectionFactory::getFactory()->getConnection();

                    /* Make sure this person exists, and get their info */
                    $sql = "Select * from employeeinfo WHERE personid = ?";

                    $stmt = $db->prepare($sql); 
                        /* Same as above */
                        $stmt->bindParam(1, $_GET['eid'], PDO::PARAM_INT);

                        $stmt->execute();



                    $result = $stmt->fetch(PDO::FETCH_ASSOC);

                    if(count($result) > 0){
                    /* Ask to confirm the delete */
                        ?>
                        <h2>Are you sure you want to delete <?=$result['firstname']?> <?=$result['lastname']?>'s Records?</h2>
                        <a href="process.php?do=confirmdelete&eid=<?=$result['personid']?>">Yes, Confirm Delete!</a>
                        <?php
                    }
                    else{
                        ?>
                        <h2>Error, Employee Not Found</h2>
                        <?php
                        }

            }
            break;



    }
}
else{
//List employees



$db = ConnectionFactory::getFactory()->getConnection();


                    $sql = "SELECT * from employeeinfo";

                    $stmt = $db->prepare($sql); 
                    $res = $stmt->execute();


                    /* Make a table with the results and headings */
                    if($res){
                        ?>
                            <table>
                            <tr>
                            <td>First Name</td>
                            <td>Last Name</td>
                            <td>Email</td>
                            <td>Phone</td>
                            <td>Department</td>
                            <td>Position</td>
                            <td>Actions</td>
                            </tr>
                        <?php
                    while($result = $stmt->fetch(PDO::FETCH_ASSOC)){
                        ?>
                            <tr>
                            <td><?=$result['firstname']?></td>
                            <td><?=$result['lastname']?></td>
                            <td><?=$result['email']?></td>
                            <td><?=$result['phone']?></td>
                            <td><?=$result['department']?></td>
                            <td><?=$result['position']?></td>
                            <td><a href="employees.php?do=edit&eid=<?=$result['personid']?>">Edit</a>&nbsp;&nbsp;
                                <a href="employees.php?do=delete&eid=<?=$result['personid']?>">Del</a>
                            </td>
                            </tr>
                        <?php
                        }                   
                        ?>
                            </table>
                        <?php           

                        }


}

include('footer.php');
/* End Employees.php */
?>

进程.php:

<?php
/* Process.php */


// Bind the parameter


include('dbfactory.php');
include('header.php');


if(isset($_GET['do']) && (!empty($_GET['do']))){

    switch($_GET['do']){

        case 'runsearch':

                if((isset($_POST['keyword'])) && (!empty($_POST['keyword']))){

                /* You have to put the % signs in beforehand with PDO */
                    $keyword = "%".$_POST['keyword']."%";

                    $db = ConnectionFactory::getFactory()->getConnection();


                    $sql = "SELECT * from employeeinfo WHERE 
                    firstname LIKE ? 
                    OR
                    lastname LIKE ? 
                    OR
                    phone LIKE ? 
                    OR
                    email LIKE ? 
                    OR
                    department LIKE ? 
                    OR
                    position LIKE ?";

                    $stmt = $db->prepare($sql); 

                    /* There are 6 placeholders, so we need to loop 6 times, binding the new placeholder each time */
                    for($i=1; $i<=6; $i++){
                        $stmt->bindParam($i, $keyword, PDO::PARAM_STR);
                    }                   
                    $res = $stmt->execute();


                    /* Make a table with the results and headings */
                    if($stmt->rowCount() > 0){
                        ?>
                            <table>
                            <tr>
                            <td>First Name</td>
                            <td>Last Name</td>
                            <td>Email</td>
                            <td>Phone</td>
                            <td>Department</td>
                            <td>Position</td>
                            <td>Actions</td>
                            </tr>
                        <?php

                    while($result = $stmt->fetch(PDO::FETCH_ASSOC)){
                        ?>
                            <tr>
                            <td><?=$result['firstname']?></td>
                            <td><?=$result['lastname']?></td>
                            <td><?=$result['email']?></td>
                            <td><?=$result['phone']?></td>
                            <td><?=$result['department']?></td>
                            <td><?=$result['position']?></td>
                            <td><a href="employees.php?do=edit&eid=<?=$result['personid']?>">Edit</a>&nbsp;&nbsp;
                                <a href="employees.php?do=delete&eid=<?=$result['personid']?>">Del</a>
                            </td>
                            </tr>
                        <?php
                        }                   
                        ?>
                            </table>
                        <?php           

                    }
                    else{
                    ?><h2>No Results Found!<?php
                    }

                }
                else{
                ?><h2>No Keyword Set!<?php
                }



        break;

        case 'saveedits':       

            /* Array of the fields we expect to be Posted */
            $required = array('personid' => 'Employee Id',
                                'firstname' => 'First Name',
                                'lastname' => 'Last Name',
                                'phone' => 'Phone Number',
                                'email' => 'Email Address',
                                'department' => 'Department',
                                'position' => 'Position');

            /* Make sure all the fields have been posted */
            $good = true;
            foreach($required as $field => $value){
                if(!isset($_POST[$field]))
                    $good = false;      
            }   

            if($good){

                $db = ConnectionFactory::getFactory()->getConnection();
                /* Have to temporarily store the personid in a temp variable, and remove it from the array */
                $pid = $_POST['personid'];
                unset($_POST['personid']);
                $posted = $_POST;

                /* Change this : firstname to : `firstname`=:firstname, etc, etc  Runs over the whole arraay */
                $params = join(", ", array_map(
                function($col) { 
                return "`".preg_replace("/`/u","``",$col)."`=".":".preg_replace("/[`\s]/u","",$col);}, 
                array_keys($posted)));

                /* Put the personid back into the posted array, so we can use it again. */
                $posted['personid'] = $pid;

                $stmt = $db->prepare("UPDATE `employeeinfo` SET {$params} WHERE `personid`=:personid"); 
                /* Use the whole post array to execute looks like: field => value */
                $stmt->execute($posted);

                if($stmt->rowCount() > 0){
                    ?><h2>Employee Updated!</h2><?php
                }
                else{
                    ?><h2>Error! Could Not Update Employee!</h2><?php
                }
            }
            else{
            print_r($_POST);
            print_r($required);
                ?><h2>Form Error! Required fields not set!</h2><?php
            }


        break;

        case 'savenew':     

            /* Array of the fields we expect to be Posted */
            $required = array('firstname' => 'First Name',
                                'lastname' => 'Last Name',
                                'phone' => 'Phone Number',
                                'email' => 'Email Address',
                                'department' => 'Department',
                                'position' => 'Position');

            /* Make sure all the fields have been posted */
            $good = true;
            foreach($required as $field => $value){
                if(!isset($_POST[$field]))
                    $good = false;      
            }   

            if($good){

                $db = ConnectionFactory::getFactory()->getConnection();
                /* Have to temporarily store the personid in a temp variable, and remove it from the array */   
                $posted = $_POST;



                    $columns = join(",", array_map(
                    function($col) { return "`".preg_replace("/`/u","``",$col)."`";}, 
                    array_keys($posted)));

                    $params = join(",", array_map(
                    function($col) { return ":".preg_replace("/[`\s]/u","",$col);},
                    array_keys($posted)));


                    $query = "INSERT INTO `employeeinfo` ({$columns}) VALUES ({$params})";

                    $stmt = $db->prepare($query);   
                    $stmt->execute($posted);

                if($stmt->rowCount() > 0){
                    ?><h2>Employee Created!</h2><?php
                }
                else{
                    ?><h2>Error! Could Not Create Employee!</h2><?php
                    print_r($stmt->errorInfo());
                }
            }
            else{
                ?><h2>Form Error! Required fields not set!</h2><?php
            }


        break;

        /* Pretty Self Explanatory */
        case 'confirmdelete':

                if(isset($_GET['eid']) && (!empty($_GET['eid']))){

                $db = ConnectionFactory::getFactory()->getConnection();


                    $sql = "Delete from `employeeinfo` WHERE personid = ?";


                    $stmt = $db->prepare($sql); 

                        $stmt->bindParam(1, $_GET['eid'], PDO::PARAM_INT);

                        $stmt->execute();

                        if($stmt->rowCount() > 0){
                        ?><h2>Employee Deleted!</h2><?php
                        }
                        else{
                        ?><h2>Error! Could Not Delete Employee!<br></h2><?php
                        print_r($stmt->errorInfo());
                        }
                }
                else{
                ?><h2>Error! No Employee By That Id!</h2><?php
                }

        break;


    }
}
else{
//Error nothing to do!
}

/* End process.php: */
?>

Dbfactory.php:

/* dbfactory.php: */
   <?php
Class ConnectionFactory
{
    private static $factory;
    public static function getFactory()
    {
        if (!self::$factory)
            self::$factory = new ConnectionFactory;
        return self::$factory;
    }

    private $db;

    public function getConnection() {
        if (!isset($db)){

           try{
           //Make sure to fill out these values
            $db = new PDO('mysql:dbname=YOURDATABASENAME;host=YOURDATABASEADDRESS', 'USERNAME', 'PASSWORD');
            return $db;
            }
            catch(PDOException $e) {  
            echo 'DB Error: '. $e->getMessage();
            }

        }
    }
}
 ?>
/* End dbfactory.php: */

标题.php:

/* Header.php: */



<html>
<head>
<style type="text/css">

td{
border:1px solid;
border-radius:3px;
padding:4px;
}
</style>
</head>
<body>
<a href="employees.php">Manage Employees</a>  -  <a href="employees.php?do=search">Search Employees</a>  -  <a href="employees.php?do=new">Add Employee</a>
<br>
<br>

/* End header.php */

页脚.php:

   /*footer.php */

</body>
</html>

/* End footer.php */

这仍然是基本的，这种事情应该实现到 php 类中。 这是使用 PDO，因此如果您的数据库详细信息发生变化，您只需更改 dbfactory.php，然后就完成了。

如果我可以回去改变开始学习 PHP 的一件事，那就是学习 PDO，而不是像您正在使用的那样已弃用的 mysql 查询函数。

这绝不是一个完美的实现，就像我说的，它应该全部分类，并且逻辑与表示分离；但这是一个开始!

祝你学习愉快!

关于php - fatal error : Call to undefined function getRecords() in C:\xampp\htdocs\Employees. php 第 101 行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7882852/

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