为什么我的服务器会出现这些问题？

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我已经在wamp服务器设置端创建了一个文件夹android_connect，并在那里上传了我的php文件。你可以在下面的错误中看到文件路径..文件是： db_config.php

<？php define（' DB_USER'， root）; define（' DB_PASSWORD'， vikrant）; define（' DB_DATABASE'， sys）; define（' DB_SERVER'， 本地实例wampmysqld64）; ？>

db_connect.php

<？php 类 DB_CONNECT { function _construct（）{ $ this-> connect（）; } 函数_destruct（）{ $ this-> close（）; } 函数connect（）{ require_once_DIR _。' / dbconfig.php' ; $ con = mysql_connect（DB_SERVER，DB_USER，DB_PASSWORD）或 die（mysql_error（））; $ db = mysql_select_db（DB_DATABASE）或 die（mysql_error（））或 die（mysql_error） （））; return $ con ; } 函数close（）{ mysql_close（）; } } ？>

get_all_products.php

< ;？php $ response = array（）; require_once_DIR _。' / db_connect.php'; $ db = new DB_CONNECT（）; $ result = mysql_querry（ SELECT * FROM users）或 die（mysql_error（））; if（mysql_num_rows（$ result）> 0）{ $ response [ products ] =阵列（）; while（$ row = mysql_fetch_array（$ result））{ $ product = array（）; $ product [ pid] = $ row [ pid]; $ product [ name] = $ row [ name]; $ product [ price] = $ row [ price]; $ product [ description] = $ row [ description]; $ product [ created_at] = $ row [ created_at]; $ product [ updated_at] = $ row [ updated_at]; array_push（$ response [ products]，$ product）; } $ response [ success] = 1; echo json_encode（$ response）; } else { $ response [ success] = 0; $ response [ message] = 找不到产品。; echo json_encode（$ response）; } ？>

哪个给出了两个错误：

注意：使用未定义的常量require_once_DIR_ - 在C：\ wamp64 \\\android_connect \get_all_products.php中假定为'require_once_DIR_' 3 致命错误：第4行的C：\ wamp64 \ www \\ _android_connect \ get_all_products.php中找不到DB_CONNECT类

delete_products.php

<？php respose = array（）; 是（isset（$ _ POST [' pid']））{ $ pid = $ _ POST [' pid']; require_once_DIR _。' / db_connect.php'; $ db = new DB_CONNECT（）; $ result = mysql_querry（ DELETE FROM products WHERE pid = $ pid）; if （mysql_affected_rows（）> 0）{ $ response [ success] = 1 ; $ response [ message] = 产品已成功删除; echo json_encode（$ response）; } else { $ response [ 成功] = 0 ; $ response [ message] = 未找到产品; echo json_encode（$ response）; } } else { $ response [ success ] = 0 ; $ response [ message] = 缺少必填字段; echo json_encode（$ response）; } ？>

哪个给出错误：

解析错误：语法错误，第2行的C：\ wamp64 \ www \\\ _android_connect \ delete_product.php意外'='

这些是我尝试上传的众多文件中的一部分。请提前帮助并谢谢。 我的尝试： 尝试再次重写代码并重新上传文件。

解决方案

this-> connect（）; } 函数_destruct（）{

this-> close（）; } 函数connect（）{ require_once_DIR _。' / dbconfig.php' ;

con = mysql_connect（DB_SERVER，DB_USER，DB_PASSWORD）或 die（mysql_error（））;

I have created a folder inside the wamp server setup end as "android_connect" and have uploaded my php files there. you can see the file path if you want in the errors below.. the files are : db_config.php

<?php define('DB_USER',"root"); define('DB_PASSWORD',"vikrant"); define('DB_DATABASE',"sys"); define('DB_SERVER',"Local instance wampmysqld64"); ?>

db_connect.php

<?php class DB_CONNECT{ function _construct(){ $this->connect(); } function _destruct(){ $this->close(); } function connect(){ require_once_DIR_.'/dbconfig.php'; $con=mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD) or die(mysql_error()); $db=mysql_select_db(DB_DATABASE) or die(mysql_error()) or die(mysql_error()); return $con; } function close(){ mysql_close(); } } ?>

get_all_products.php

<?php $response=array(); require_once_DIR_.'/db_connect.php'; $db=new DB_CONNECT(); $result=mysql_querry("SELECT * FROM users") or die(mysql_error()); if(mysql_num_rows($result)>0){ $response["products"]=array(); while($row=mysql_fetch_array($result)){ $product=array(); $product["pid"]=$row["pid"]; $product["name"]=$row["name"]; $product["price"]=$row["price"]; $product["description"]=$row["description"]; $product["created_at"]=$row["created_at"]; $product["updated_at"]=$row["updated_at"]; array_push($response["products"],$product); } $response["success"]=1; echo json_encode($response); }else{ $response["success"]=0; $response["message"]="No Product Found."; echo json_encode($response); } ?>

which is giving two errors:

Notice: Use of undefined constant require_once_DIR_ - assumed 'require_once_DIR_' in C:\wamp64\www\android_connect\get_all_products.php on line 3 Fatal error: Class 'DB_CONNECT' not found in C:\wamp64\www\android_connect\get_all_products.php on line 4

delete_products.php

<?php respose = array(); is(isset($_POST['pid'])){ $pid=$_POST['pid']; require_once_DIR_.'/db_connect.php'; $db=new DB_CONNECT(); $result=mysql_querry("DELETE FROM products WHERE pid=$pid"); if (mysql_affected_rows() > 0) { $response["success"] = 1; $response["message"] = "Product successfully deleted"; echo json_encode($response); } else { $response["success"] = 0; $response["message"] = "No product found"; echo json_encode($response); } }else{ $response["success"] = 0; $response["message"] = "Required field(s) is missing"; echo json_encode($response); } ?>

which is giving error:

Parse error: syntax error, unexpected '=' in C:\wamp64\www\android_connect\delete_product.php on line 2

These are some of many files i have tried uploading. Please help and thank you in advance. What I have tried: Tried rewriting the code again and reuploading files.

解决方案

this->connect(); } function _destruct(){

this->close(); } function connect(){ require_once_DIR_.'/dbconfig.php';

con=mysql_connect(DB_SERVER, DB_USER, DB_PASSWORD) or die(mysql_error());