Question

您好我收到此错误错误：SQL语法中有错误;查看与您的MySQL服务器版本对应的手册，以便在第1行的“管理员”附近使用正确的语法

这是我的新消息脚本new.php，这是其中包含错误的

  <?php
if(isset($_GET['new'])){

if(isset($_POST['submit'])){

$name = $_POST['name'];
$sub = $_POST['sub'];
$msg = $_POST['msg'];

$user3 = "SELECT * FROM `users` WHERE `username` = ".$name." ";
$result6 = mysqli_query($conn,$user3);
$row6 = mysqli_fetch_row($result6);
if (!$row6['id']) {
    printf("Error: %s\n", mysqli_error($conn));
    exit();
}

$username2 = $row6['id'];

$id = $_SESSION['id'];

if(!$name OR !$sub OR !$msg){
echo "please enter all feilds";
}
else{


$sql = " INSERT INTO `inbox`(`id`, `too`, `from`, `message`, `unread`, `Subject`) VALUES (NULL, '$username2', '$id', '$msg','0', '$sub')
";
}
if ($conn->query($sql) === TRUE) {
    echo "Message Sent!";
} else {
  echo "Error: " . $sql . "<br>" . $conn->error;
}


}
?>
<div class="dark-matter">
  <form action="" method="POST">

          Username:<br />
          <input type="text"  placeholder="Enter username" name="name"><br />



          Subject:<br/>
          <input type="text"  placeholder="Enter Subject" name="sub"><br/>

          Message:<br />
          <textarea name="msg" cols="40" rows="5" ... ></textarea><br />

          <input type="submit" class="button" name="submit" value="submit">

</div>
<?php
}
?>

尝试从数据库中选择时出现MySQL和PHP错误

0 个答案: