我对 PHP 和 HTML 真的很陌生。按提交按钮后，我尝试使用 Users MySQL 表中已有的数据填充字段（这有效）。我还想将通过 SELECT 获得的相同数据插入到另一个名为 scan 的 SQL 表中。
<?php
// php code to search data in mysql database and set it in input text
if(isset($_POST['search']))
{
// id to search
$user_id = $_POST['user_id'];
// connect to mysql
$connect = mysqli_connect("127.0.0.1", "root", "root","demodb");
// mysql search query
$query = "SELECT * FROM Users WHERE user_id = $user_id LIMIT 1";
$query = "INSERT INTO scan (user_id, osha, firstname, lastname, company, trade, email, picture) SELECT user_id, osha, firstname, lastname, company, trade, email, picture FROM Users WHERE user_id = $user_id LIMIT 1";
$result = mysqli_query($connect, $query);
// if id exist
// show data in inputsi
if(mysqli_num_rows($result) > 0)
{
while ($row = mysqli_fetch_array($result))
{
$osha = $row['osha'];
$firstname = $row['firstname'];
$lastname = $row['lastname'];
$company = $row['company'];
$trade = $row['trade'];
}
}
// if the id not exist
// show a message and clear inputs
else {
echo "Undifined ID";
$osha = "";
$firstname = "";
$lastname = "";
$company = "";
$trade = "";
}
mysqli_free_result($result);
mysqli_close($connect);
}
// in the first time inputs are empty
else{
$osha = "";
$firstname = "";
$lastname = "";
$company = "";
$trade = "";
}
?>
<!DOCTYPE html>
<html>
<head>
<title> PHP FIND DATA </title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<form action="barcode.php" method="post">
Id:<input type="text" name="user_id"><br><br>
Osha #:<input type="text" name="osha" value="<?php echo $osha;?>"><br><br>
First Name:<input type="text" name="firstname" value="<?php echo $firstname;?>"><br>
<br>
Last Name:<input type="text" name="lastname" value="<?php echo $lastname;?>"><br><br>
Company:<input type="text" name="company" value="<?php echo $company;?>"><br><br>
Trade:<input type="text" name="trade" value="<?php echo $trade;?>"><br><br>
<input type="submit" name="search" value="Find">
</form>
</body>
</html>
但似乎我当时只能在 PHP 中运行一个查询。我尝试集成 mysqli_multi_query 但不断收到以下错误“mysqli_num_rows() 期望参数 1 为 mysqli_result”。
如何运行这两个查询并同时使用数据填充字段。
添加表定义
用户表
| Users | CREATE TABLE `Users` (
`user_id` int(6) unsigned NOT NULL AUTO_INCREMENT,
`osha` int(50) DEFAULT NULL,
`firstname` varchar(30) NOT NULL,
`lastname` varchar(30) NOT NULL,
`company` varchar(50) DEFAULT NULL,
`trade` varchar(50) DEFAULT NULL,
`email` varchar(50) DEFAULT NULL,
`picture` varchar(50) DEFAULT NULL,
`reg_date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB AUTO_INCREMENT=98819 DEFAULT CHARSET=latin1 |
扫描表
| scan | CREATE TABLE `scan` (
`user_id` int(6) unsigned NOT NULL DEFAULT '0',
`osha` int(50) DEFAULT NULL,
`firstname` varchar(30) NOT NULL,
`lastname` varchar(30) NOT NULL,
`company` varchar(50) DEFAULT NULL,
`trade` varchar(50) DEFAULT NULL,
`email` varchar(50) DEFAULT NULL,
`picture` varchar(50) DEFAULT NULL,
`reg_date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
