Question

我创建了一些表（在MySQL中）：

create table clients
( clientid int unsigned not null auto_increment primary key,
  Name char(50) not null,
  SecondName char(50) not null,
  address char(100) not null,
  City char(30) not null
  Email char(100);

我想通过客户填写他的个人数据，从网页输入数据（姓名，SecondName，地址，城市，电子邮件）到我的数据库NewClientBase中，但是clientid应该由程序生成：

<html>   
<?php    
...
  // short names initialization. Taken from filling external form
  $Name=$_POST['Name'];    
  $SecondName=$_POST['SecondName'];    
  $Address=$_POST['Address'];    
  $City=$_POST['City'];    
  $Email=$_POST['Email'];    
 $clientid=0;    

  if (!$Name || !$SecondName || !$Address || !$City || !$Email) {    
     echo "Not all data completed.<br />"
          ."Return and try again";
     exit;
  }    

  if (!get_magic_quotes_gpc()) {    
    $Name = addslashes($Name);    
    $SecondName = addslashes($SecondName);    
    $Address = addslashes($Address);    
    $City = addslashes($City);    
    $Email = doubleval($Email);    
  }    
  @ $db = new mysqli('localhost', 'root', '********', 'NewClientBase');    

$wynik_sprawdzania= mysqli_query($db, $sprawdzanie);    
$ile_znalezionych=$wynik_sprawdzania->fetch_row();     
$ilosc_pol=$wynik_sprawdzania->field_count;    
.....     
      // a new record with the next number is calculated:

    $clientid=$wynik_sprawdzania->fetch_row()+1;    
....    
and created a new record with this number:        
$zapytanie = "insert into clients values        ('".$clientid."','".$Name."','".$SecondName."', '".$Address."','".$City."',     '".$Email."')";    
  $wynik = $db->query($zapytanie);    
 .....    
 $db->close();     
?>    
</html>

问题是：
if（例如）生成第5条记录并像这样输入数据库

$zapytanie = "insert into clients values (5,'".$Name."','".$SecondName."',     '".$Address."','".$City."', '".$Email."')";    
  $wynik = $db->query($zapytanie);

所有记录都正确插入数据库但如果像这样插入

$zapytanie = "insert into clients values     
('".$clientid."','".$Name."','".$SecondName."', '".$Address."','".$City."',     '".$Email."')";    
  $wynik = $db->query($zapytanie);

（$ clientid No 5是按程序计算的，如上所示）记录未创建。没有＆＃34; .clientid。＆＃34;＆＃39;并且＆＃39;。$ clientid。＆＃39;有谁能够帮我？有解决方案吗？感谢

Answer 1

ClientId定义为Int，而不是字符串。你试着输入字符串。删除$ clientid上的单引号。

$zapytanie = "insert into clients values     
(".$clientid.",'".$Name."','".$SecondName."', '".$Address."','".$City."',     '".$Email."')";    
  $wynik = $db->query($zapytanie);

Answer 2

变量$ clientid应该被视为整数，不应该添加任何引号。

$zapytanie = "insert into clients values     
(".$clientid.",'".$Name."','".$SecondName."', '".$Address."','".$City."',     '".$Email."')";    
  $wynik = $db->query($zapytanie);

希望这有帮助

PHP，MySQL输入数据

2 个答案: