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我是自学php语言的。我创建了用于插入数据和在数据库中搜索数据的 PHP 代码。我想使用 MySQL 和 PHP 向数据库中插入和搜索数据。我使用 WAMP 服务器。最后，搜索功能正常工作，但插入功能不起作用。
表格
我的错误
Fatal error: Uncaught exception 'mysqli_sql_exception' with message '
PHP 代码是:
if(isset($_POST['insert'])){
$data = getPosts();
$sql = "INSERT INTO users (id, fname, lname, age) VALUES ('$data[0]','$data[1],'$data[2]','$data[3]')";
$result= mysqli_query($connect,$sql);
if($result){
echo 'Insert is success.....';
}
else{
echo 'Insert is unsuccess';
}
}
function getPosts(){
$posts = array();
$posts[0] = $_POST['id'];
$posts[1] = $_POST['fname'];
$posts[2] = $_POST['lname'];
$posts[3] = $_POST['age'];
return $posts;
}
//Search
if(isset($_POST['search'])){
$data = getPosts();
$search_Query = "SELECT * FROM users WHERE id = $data[0]";
$search_Result = mysqli_query($connect, $search_Query);
if($search_Result)
{
if(mysqli_num_rows($search_Result))
{
while($row = mysqli_fetch_array($search_Result))
{
$id = $row['id'];
$fname = $row['fname'];
$lname = $row['lname'];
$age = $row['age'];
}
}
else{
echo 'No Data for this id';
}
}else{
echo 'Result Error';
}
}
html代码:
<form action="" method="post">
Enter Your Id: <input type="number" name="id" placeholder="Id" value="<?php echo $id;?>"><br><br>
Enter Your First Name: <input type="text" name="fname" placeholder="First Name" value="<?php echo $fname;?>"><br><br>
Enter Your Last Name:<input type="text" name="lname" placeholder="Last Name" value="<?php echo $lname;?>"><br><br>
Enter Your Age:<input type="number" name="age" placeholder="Age" value="<?php echo $age;?>"><br><br>
<div>
<input type = "submit" name="insert" value="Add">
<input type = "submit" name="search" value="Search">
</div>
</form>
谁能帮帮我？感谢所有听众。