Textarea中的每一行都是数据库中的一个新值 - Textarea each line is a new value in the db

Textarea each line is a new value in the db

我想知道如何使用文本区，以便使每一行在我的数据库中的新值。

例如，我把这个放到文本区域:

1
2
3

然后每个值(1,2,3)将作为不同的值出现。我该如何继续这样做呢?

下面是我正在做的:

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
$sql = "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('John', 'Doe', 'john@example.com')";
if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();
?>

假设你的文本是:

1'r'n
2'r'n
3'r'n

您可以根据回车符('r)，换行符('n)字符分隔行结束符(在Windows中)。或者只使用New Line，因为Linux将只使用New Line作为EOL。

http://php.net/manual/en/function.explode.php

比如说你从表单中获取了以下数据:

"John'r'nDoe'r'njohn@example.com'r'n"

我们使用explode()将其分成一个数组:

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
$parts = explode("'n", $_POST['myTextBox']);
$sql = $conn->prepare("INSERT INTO MyGuests (firstname, lastname, email) VALUES (?, ?, ?)");
$sql->bind_param($sql, 'sss', $parts[0], $parts[1], $parts[2]);
if ($sql->execute() === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: . $conn->error;
}
$conn->close();
?>

这是相当危险的，因为您几乎无法控制表单输入。我会把它们分成3个独特的文本框。我还将在提交表单之前和之后(当PHP摄取数据时)验证输入。