我应该制作一个清单程序，让您输入计算机零件以进行跟踪，并且我应该通过xml通过Dependency Injection将接口层和业务层分开。
使用此处的示例作为参考http://www.littleoceanwaves.com/securephp/examples/getc4exfiles.php，我认为我对代码的外观有所了解，并且能够编写大部分代码。
lab.html
<html>
<head>
<title>ABC Computer Parts Inventory</title>
<script src="e42validator.js"></script>
<style type="text/css">
#JS { display:none; }
</style>
<script>
function checkJS() {
document.getElementById('JS').style.display = "inline";
}
</script>
</head>
<body onload="checkJS();">
<h1>Inventory Managment</h1>
<div id="JS">
<form method="post" action="lab_interface.php" onSubmit="return validate_input(this)">
<h2>Please complete ALL fields. Please note the required format of information.</h2>
Enter Product Name (max 20 characters, alphabetic) <input type="text" pattern="[a-zA-Z]*" title="Up to 20 Alphabetic Characters" maxlength="20" name="product_name" id="product_name" required/><br /><br />
Enter Product Code (numeric only) <input type="number" min="1" max="999999" name="product_code" id="product_code" required /><br /><br />
Enter Product price (numeric only) <input type="number" min="1" max="999999" name="product_price" id="product_price" required /><br /><br />
Enter Product Quantity (numeric only) <input type="number" min="1" max="999999" name="product_quantity" id="product_quantity" required /><br /><br />
Enter Product Name (max 20 characters, alphabetic) <input type="text" pattern="[a-zA-Z]*" title="Up to 40 Alphabetic Characters" maxlength="40" name="product_needs" id="product_needs" required/><br /><br />
<input type="submit" value="Click to add product" />
</form>
</div>
<noscript>
<div id="noJS">
<form method="post" action="lab_interface.php">
<h2>Please complete ALL fields. Please note the required format of information.</h2>
Enter Product Name (max 20 characters, alphabetic) <input type="text" pattern="[a-zA-Z]*" title="Up to 20 Alphabetic Characters" maxlength="20" name="product_name" id="product_name" required/><br /><br />
Enter Product Code (numeric only) <input type="number" min="1" max="999999" name="product_code" id="product_code" required /><br /><br />
Enter Product price (numeric only) <input type="number" min="1" max="999999" name="product_price" id="product_price" required /><br /><br />
Enter Product Quantity (numeric only) <input type="number" min="1" max="999999" name="product_quantity" id="product_quantity" required /><br /><br />
Enter Product Name (max 20 characters, alphabetic) <input type="text" pattern="[a-zA-Z]*" title="Up to 40 Alphabetic Characters" maxlength="40" name="product_needs" id="product_needs" required/><br /><br />
<input type="submit" value="Click to add product" />
</form>
</div>
</noscript>
</body>
</html>
lab_interface.php
<?php
function clean_input($value)
{
$value = htmlentities($value);
// Removes any html from the string and turns it into < format
$value = strip_tags($value);
if (get_magic_quotes_gpc())
{
$value = stripslashes($value);
// Gets rid of unwanted slashes
}
$value = htmlentities($value);
// Removes any html from the string and turns it into < format
$bad_chars = array( "{", "}", "(", ")", ";", ":", "<", ">", "/", "$" );
$value = str_ireplace($bad_chars,"",$value);
return $value;
}
function error_check_product_app($lab)
{
list($name_error, $code_error, $price_error, $quantity_error, ) = explode(',', $lab);
print $name_error == 'TRUE' ? 'Name update successful<br/>' : 'Name update not successful<br/>';
print $code_error == 'TRUE' ? 'Breed update successful<br/>' : 'Breed update not successful<br/>';
print $price_error == 'TRUE' ? 'Color update successful<br/>' : 'Color update not successful<br/>';
print $quantity_error == 'TRUE' ? 'Weight update successful<br/>' : 'Weight update not successful<br/>';
print $needs_error == 'TRUE' ? 'Name update successful<br/>' : 'Name update not successful<br/>';
}
function get_product_app_properties($lab)
{
print "product name is " . $lab->get_product_name() . "<br/>";
print "product quantity is " . $lab->get_product_quantity() . " lbs. <br />";
print "product code is " . $lab->get_product_code() . "<br />";
print "product price is " . $lab->get_product_price() . "<br />";
print "product needs " . $lab->get_product_needs() . "<br/>";
}
//----------------Main Section-------------------------------------
if ( file_exists("product__container.php"))
{
Require_once("product__container.php");
}
else
{
print "System Error #1";
exit;
}
if (isset($_POST['product_app']))
{
if ((isset($_POST['product_name'])) && (isset($_POST['product_code'])) && (isset($_POST['product_price'])) && (isset($_POST['product_quantity'])) && (isset($_POST['product_needs'])))
{
$container = new product_container(clean_input($_POST['product_app']));
$product_name = clean_input($_POST['product_name']);
$product_code = clean_input($_POST['product_code']);
$product_price = clean_input($_POST['product_price']);
$product_quantity = clean_input($_POST['product_quantity']);
$product_needs = clean_input($_POST['product_needs']);
$properties_array = array($product_name,$product_code,$product_price,$product_quantity,$product_needs);
$lab = $container->create_object($properties_array);
if ($lab != FALSE)
{
error_check_product_app($lab);
get_product_app_properties($lab);
}
else
{
print "System Error #2";
}
}
}
?>
product_container.php
<?php
class product_container
{
private $app;
private $product_location;
function __construct($value)
{
if (function_exists('clean_input'))
{
$this->app = $value;
}
else
{
exit;
}
}
public function set_app($value)
{
$this->app = $value;
}
public function get_product_application($search_value)
{
$xmlDoc = new DOMDocument();
if ( file_exists("product_applications.xml") )
{
$xmlDoc->load( 'product_applications.xml' );
$searchNode = $xmlDoc->getElementsByTagName( "type" );
foreach( $searchNode as $searchNode )
{
$valueID = $searchNode->getAttribute('ID');
if($valueID == $search_value)
{
$xmlLocation = $searchNode->getElementsByTagName( "location" );
return $xmlLocation->item(0)->nodeValue;
break;
}
}
}
throw new Exception("System Error: file not found in xml");
}
function create_object($properties_array)
{
$product_loc = $this->get_product_application($this->app);
if(($product_loc == FALSE) || (!file_exists($product_loc)))
{
throw new Exception("System Error: Could not create object");
}
else
{
require_once($product_loc);
$class_array = get_declared_classes();
$last_position = count($class_array) - 1;
$class_name = $class_array[$last_position];
$product_object = new $class_name($properties_array);
return $product_object;
}
}
}
?>
product_application.xml
<?xml version="1.0" encoding="UTF-8"?>
<dog_applications>
<application>
<type ID='product'>
<location>inventory.php</location>
</type>
</application>
</dog_applications>
inventory.php
<?php
class Product {
// ----------------------------------------- Properties -----------------------------------------
private $product_name = "no name";
private $product_code = 0;
private $product_price = 0;
private $product_quantity = 90;
private $product_needs = "no needs";
private $error_message = "??";
// ---------------------------------- Set Methods ----------------------------------------------
function set_product_name($value) {
$error_message = TRUE;
(ctype_alpha($value) && strlen($value) <= 20) ? $this-> product_name = $value: $this-> error_message = FALSE;
return $this-> error_message;
}
function set_product_code($value) {
$error_message = TRUE;
(is_numeric($value) && ($value > 0 && $value <= 999999)) ? $this-> product_code = $value: $this-> error_message = FALSE;
return $this-> error_message;
}
function set_product_price($value) {
$error_message = TRUE;
(is_numeric($value) && ($value > 0 && $value <= 999999)) ? $this-> product_price = $value: $this-> error_message = FALSE;
return $this-> error_message;
}
function set_product_quantity($value) {
$error_message = TRUE;
(is_numeric($value) && ($value > 0 && $value <= 999999)) ? $this-> product_quantity = $value: $this-> error_message = FALSE;
return $this-> error_message;
}
function set_product_needs($value) {
$error_message = TRUE;
(preg_match('/[^a-z_\-0-9]/i', $value) && strlen($value) <= 40) ? $this-> product_needs = $value: $this-> error_message = FALSE;
return $this-> error_message;
}
// ----------------------------------------- Get Methods ------------------------------------------------------------
function get_product_name() {
return $this-> product_name;
}
function get_product_code() {
return $this-> product_code;
}
function get_product_price() {
return $this-> product_price;
}
function get_product_quantity() {
return $this-> product_quantity;
}
function get_product_needs() {
return $this-> product_needs;
}
function get_properties() {
return "$this->product_name,$this->product_code,$this->product_price,$this->product_quantity,$this->product_needs.";
}
}
还有一个验证器javascript文件，但我认为它工作正常，我认为不需要对其进行调整
当我运行程序时，将加载html，并且可以很好地输入信息，但是当我单击“添加产品”时，所有显示的都是空白页。因此，我需要帮助弄清楚要解决的问题，或者即使我正确执行了所有这些操作。记录下来，我知道像这样在lab_interface.php内部调用stock.php可能会更容易
Require_once("inventory.php");
但是我的作业希望我使用依赖注入，因此我不确定是否真的允许这样做。