php面向对象编程：构建类

我正在考虑建立我的第一个真正的类，我已经玩了比特和bob，但它的时间来尝试真正的：）

我试图做的是创建一个表单类，它处理我提交的所有表单，检查输入的数据，并返回错误消息或成功消息

这是我的一张表格，（一页上有5张）

任何帮助都将不胜感激

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Luke

我为数据库中的每个表生成一个类；生命太短暂，无法为每个数据库表实际编写该功能

每个字段都有它自己的对象，包含它的值、类型、maxlength等。这些字段也被添加到一个数组中，这样我就可以用它们做一些很酷的事情

每个表类都扩展了一个更大的类，允许我插入、更新、删除和显示为表和表单。。。我可以覆盖任何非标准的函数，尽管这非常罕见

对于遍历大约25000条大小良好的记录，性能开销约为0.001ms

例如，生成文档记录数据表的代码如下所示：

最好的一点是：每一步都可以自动完成：）因此您可以键入$objDocument->，所有的方法和属性都会弹出，包括所有字段对象，这样您就不会拼写错误

如果我有足够的兴趣（选票），我会把所有的东西都放在网上

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不过，当你自己做的时候，这应该是值得深思的

我不会在那个类中直接使用

$\u POST

。这是测试用的毒药。最简单的改进是将post值作为构造函数参数传递。欢迎hek2mglYou提供帮助。。我可以告诉你很多关于如何改进的事情，但我认为你能为自己尝试一些东西是件好事。（+1）要有耐心，继续玩代码，一旦进入“大师级”。：）大多数情况下，“大师级”是通过从你犯的错误中学习而获得的。在这一点上，不要太在意完美。继续玩吧。。太好了！

<form action="include/mform.php" method="post" name="business_listing">
    <input name="biz_name" type="text" value="Business or Place Name" />
    <select name="biz_department">
    <option value="">Business Sector</option>
        <?php
        $query = $user->database->query("SELECT * FROM tbl_sectors");
        while($row=$user->database->fetchArray($query))
        {
            $id = $row['sectorID'];
            $dept = $row['sectorName'];
            echo "<option value='$id'>$dept</option>";
        }?>
    </select>
    <input name="biz_address1" type="text" value="Street Name" />
                                <select name="job_location">
    <option value="">Location</option>
        <?php
        $query = $user->database->query("SELECT * FROM tbl_places");
        while($row=$user->database->fetchArray($query))
        {
            $id = $row['placeID'];
            $dept = $row['placeName'];
            echo "<option value='$id'>$dept</option>";
        }?>
    </select>

    <input name="biz_phone" type="text" value="Contact Number" />
    <input name="businessSubmit" type="submit" value="Submit" />
</form>
</div>

class Mform
{
    private $values = array();  //Holds submitted form field values
    private $errors = array();  //Holds submitted form error messages
    private $num_errors;   //The number of errors in submitted form

    public function __construct()
    {

        if(isset($_POST['businessSubmit']))
        {
            $this->chkBusiness();
        }

        if(isset($_POST['jobSubmit']))
        {
            $this->chkJob();
        }

        if(isset($_POST['accommodationSubmit']))
        {
            $this->chkAccommodation();
        }

        if(isset($_POST['tradeSubmit']))
        {
            $this->chkTrade();
        }

        if(isset($_POST['eventSubmit']))
        {
            $this->chkEvent();
        }

    }

    public function chkBusiness()
    {
        $field = "business";

    }

    public function chkJob()
    {
        return "job";
    }

    public function chkAccommodation()
    {
        return "accommodation";
    }

    public function chkTrade()
    {
        return "trade";
    }

    public function chkEvent()
    {
        return "event";
    }

    /**
    * setValue - Records the value typed into the given
    * form field by the user.
    */
    public function setValue($field, $value)
    {
        $this->values[$field] = $value;
    }

    /**
    * setError - Records new form error given the form
    * field name and the error message attached to it.
    */
    public function setError($field, $errmsg)
    {
        $this->errors[$field] = $errmsg;
        $this->num_errors = count($this->errors);
    }

    /**
    * value - Returns the value attached to the given
    * field, if none exists, the empty string is returned.
    */
    public function value($field)
    {
        if(array_key_exists($field,$this->values))
        {
            return htmlspecialchars(stripslashes($this->values[$field]));
        }
        else
        {
            return "";
        }
    }

    /**
    * error - Returns the error message attached to the
    * given field, if none exists, the empty string is returned.
    */
    public function error($field)
    {
        if(array_key_exists($field,$this->errors))
        {
            return "<font size=\"2\" color=\"#ff0000\">".$this->errors[$field]."</font>";
        }
        else
        {
            return "";
        }
    }

    /* getErrorArray - Returns the array of error messages */
    public function getErrorArray()
    {
        return $this->errors;
    }

}

/* Initialize mform */
$mform = new Mform();

    public function chkBusiness()
{
    $field = "business";
    $name = $_POST['biz_name'];// all need to be sanitized!!
    $dept = $_POST['biz_dept'];
    $address = $_POST['biz_address'];
    $location = $_POST['biz_location'];
    $phone = $_POST['biz_phone'];

    //start checking the input
    if(!$name || strlen($name = trim($name)) == 0)
    {
        $this->mform->setError($field, "* Name not entered");  
    }
    ...
    ...
}

    //Create object
    $objDocument = new cls__CMS_Document();

    //Set the fields you want to display in the datatable
    $objDocument->objID->Active(true);
    $objDocument->objDocument_Name->Active(true);
    $objDocument->objAuthorID->Active(true);        
    $objDocument->objVersion->Active(true);        
    $objDocument->objDate_Created->Active(true);
    $objDocument->objDate_Last_Edited->Active(true);

    //Include a hyperlink from the ID field
    $objDocument->objID->HyperLink('/drilldown.php');
    $objDocument->objID->Post(true);

    //Pass a field through a formatting function
    $objDocument->objAuthorID->OutputFunction('getAuthorFromID');

    $result .= $objDocument->displayTable($sqlConditions);

    unset ($objDocument);