我正在研究一个简单的 PHP 脚本，它将用户详细信息存储在 MySQL 数据库中。只要查询与姓氏（预定义）匹配，我就可以运行查询并让它返回各个记录。一旦我有了记录，我希望能够在每条记录旁边回显一个打印按钮，以便用户可以单独打印每条记录。
该代码是几个代码片段的混搭，并且运行良好，除了“打印用户数据”部分。我不是 PHP 的新手，但我也知道足以浏览脚本。这是我到目前为止所得到的。
<?php
//capture search term and remove spaces at its both ends if the is any
$searchTerm = trim($_GET['keyname']);
//check whether the name parsed is empty
if($searchTerm == "")
{
echo "Enter name you are searching for.";
exit();
}
//database connection info
$host = "localhost"; //server
$db = "users"; //database name
$user = "root"; //dabases user name
$pwd = "password1"; //password
//connecting to server and creating link to database
$link = mysqli_connect($host, $user, $pwd, $db);
//MYSQL search statement
$query = "SELECT * FROM details WHERE lastname LIKE '%$searchTerm%'";
$results = mysqli_query($link, $query);
/* check whether there were matching records in the table
by counting the number of results returned */
if(mysqli_num_rows($results) >= 1)
{
$output = "";
while($row = mysqli_fetch_array($results))
{
echo "<tr valign=bottom>";
echo "<td bgcolor=#ffffff background='img/dots.gif' colspan=6><img src=img/blank.gif width=1 height=1></td>";
echo "</tr>";
echo "<tr valign=center>";
echo "<td class=tabval><img src=img/blank.gif width=10 height=20></td>";
echo "<td class=tabval><b>".htmlspecialchars($row['firstname'])."</b> </td>";
echo "<td class=tabval>".htmlspecialchars($row['lastname'])." </td>";
echo "<td class=tabval>".htmlspecialchars($row['address'])."</td> ";
echo "<td class=tabval>".htmlspecialchars($row['phone'])." </td>";
echo "<button type=\"button\" class=\"formbutton\" onclick=\"printpage('" . $lastname . "'); \">Print User Data</button>";
echo "<td class=tabval></td>";
echo "</tr>";
$i++;
}
echo "<tr valign=bottom>";
echo "<td bgcolor=#fb7922 colspan=6><img src=img/blank.gif width=1 height=8></td>";
echo "</tr>";
echo $output;
}
else
echo "There was no matching record for the name " . $searchTerm;
?>
<br />
<a href="javascript:history.go(-1)">Done</a>