Question

我为这个类创建了这个网页，我需要将两个单独的HTML表单输入连接起来，并将它们插入到MySQL数据库中。具体来说，我要求用户在单独的HTML表单输入中输入他们的名字和姓氏，我必须将这两个输入连接成一个全名，中间有一个空格（或者＆＃34; Bob＆＃34;和＆＃34 ; Ross＆＃34;连接将是＆＃34; BobRoss＆＃34;而不是＆＃34; Bob Ross＆＃34;）。这样做时我不知道从哪里开始。此外，我需要在将数据库插入数据库之前检查数据库中是否已存在全名，但我已经使用名字和姓氏进行了操作，因此不应该这样做硬。

以下是包含表单输入的HTML页面：

<html>
<head>
    <link rel="stylesheet" href="Site.css">
    <?php include("Header.php"); ?>
    </div>
</head>

<body>
    <div id="main">
        <h1>About</h1>

        <form action="Insert.php" method="post">
            <p>First name:</p><input type="text" name="firstname"><br>
            <p>Last name:</p><input type="text" name="lastname"><br>
            <p>Age:</p><input type="text" name="age"><br>

            <input type="submit">
        </form>

        <?php include("Footer.php");?>
    </div> 
</body>
</html>

这是PHP页面，它将数据输入数据库。目前我输入用户的名字，姓氏和年龄，但我需要连接名字和姓氏，并确保它不在数据库中，然后将其插入到数据库，我还没有做到。目前我确保名字是唯一的，我确保姓氏是唯一的，但我不在乎年龄是否独特。

<?php 
$con = mysql_connect("localhost","a7068104_user2","wiseguy1345");
if(!$con) {
    die("could not connect to localhost:" .mysql_error());
}

header("refresh:1.5; url=NamesAction.php");

mysql_select_db("a7068104_world") or die("Cannot connect to database");

$name = mysql_real_escape_string($_POST['firstname']);
$query = "SELECT * FROM names_1 WHERE firstname='$name'";
$result = mysql_query($query);
if(mysql_num_rows($result) > 0 ){
        echo "Your name is already in the database and will not be added again!";
}
else {
        $query = "INSERT INTO names_1 (firstname) VALUES('$name')";
        $result = mysql_query($query);
        if($result) {
            echo "Your first name was successfully added to the database!";
        }
        else{
            echo "Your first name couldn't be added to the database!";
        }
}

$name = mysql_real_escape_string($_POST['lastname']);
$query = "SELECT * FROM names_1 WHERE lastname='$name'";
$result = mysql_query($query);
if(mysql_num_rows($result) > 0 ){
        echo "Your name is already in the database and will not be added again!";
}
else {
        $query = "INSERT INTO names_1 (lastname) VALUES('$name')";
        $result = mysql_query($query);
        if($result) {
            echo "Your first name was successfully added to the database!";
        }
        else{
            echo "Your first name couldn't be added to the database!";
        }
}

$name = mysql_real_escape_string($_POST['age']);
    $query = "INSERT INTO names_1 (age) VALUES('$name')";
    $result = mysql_query($query);
    if($result) {
        echo "Your name was successfully added to the database!";
    }
    else {
        echo "Your name couldn't be added to the database!";
    }

mysql_close($con);
?>

<html>
<head>
    <link rel="stylesheet" href="Site.css">
    <?php include("Header.php"); ?>
    </div>
</head>

<body>
    <div id="main">
        <h1>Names</h1>
        <p>You will be redirected back to the <b>Names</b> page in a moment.</p>
        <?php include("Footer.php");?>
    </div>
</body>
</html>

Answer 1

首先，您不应该使用mysql函数作为此扩展程序从PHP 5.5.0开始已弃用，将来会被删除。我建议使用新的改进的PDO库和PDO准备语句，请参阅here。

至于连接，你可以这样做：

$concatenated_name = $_POST['firstname'] . " " . $_POST['lastname'];

这会将名称与两者之间的空格连接起来。

然后，您可以在查询中使用$concatenated_name。

但是我仍强烈建议您将PDO用于所有功能。

Answer 2

 $fullname = trim($_REQUEST['firstname']).trim($_REQUEST['lastname']);

连接两个HTML输入并将它们插入MySQL数据库

2 个答案: