How store multiple language textfield in mysql with php?

问题

I am trying to save multiple textfield by language, and when saving if there is an empty textfield of any language, ignore it but for some error my code does not work correctly and when i click submit only save the first textfield

Database

+----------+------------+---------------+
| email_id | email_lang | email_content |
+----------+------------+---------------+
|          |            |               |
+----------+------------+---------------+

Html

<form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="post">

   <input type="text" value="<?php echo $_GET['id']; ?>" name="email_id" hidden>

   <?php foreach ($languages as $lang): ?>
   <input type="text" value="<?php echo $lang ?>" name="email_lang">
   <textarea type="text" value="1" name="email_content"></textarea>
   <?php endforeach ?>

<button type="submit" name="save">Save</button>
</form>

Php

<?php

if ($_SERVER['REQUEST_METHOD'] == 'POST'){

$sentence = $connect->prepare("INSERT INTO emailtemplates (email_id,email_lang,email_content) VALUES (:email_id, :email_lang, :email_content)");

$email_id = $_POST['email_id'];
$email_lang = $_POST['email_lang'];
$email_content = $_POST['email_content'];

$sentence->execute(array(
        ':email_id' => $email_id,
        ':email_lang' => $email_lang,
        ':email_content' => $email_content
        ));
}

$languages = ['en', 'fr', 'ru'];

require '../views/new.email.view.php';

?>

Expected results

+----------+------------+-----------------+
| email_id | email_lang |  email_content  |
+----------+------------+-----------------+
|        1 | en         | english content |
|        1 | fr         | french content  |
+----------+------------+-----------------+

回答1:

HTML part

Your input fields in the HTML form need to have names which will allow you to identify the language. In HTML you can create field names with square brackets. When PHP receives these values it will treat them as an array. You can define a <textarea> like this:

<textarea name="email_content[fr]">

Then in PHP you can access the value using the following syntax:

$french = $_POST['email_content']['fr'];

Notes:

• HTML <textarea> doesn't have type nor value attributes.
• Instead of adding hidden attribute to the <input> elements, just specify the type="hidden".
• When outputting any dynamic content within HTML you should take care of XSS protection.
• Instead of <?php echo $var ?> you can use the shorter syntax <?=$var ?>

Your complete HTML form might then look something like this:

<form action="<?=htmlspecialchars($_SERVER['PHP_SELF'])?>" method="post">
    <input type="hidden" value="<?=$id?>" name="email_id">

    <?php foreach ($languages as $lang) : ?>
        <textarea value="1" name="email_content[<?=htmlspecialchars($lang)?>]" placeholder="<?=htmlspecialchars($lang)?>" value="<?=htmlspecialchars($lang)?>"></textarea>
    <?php endforeach ?>

    <button type="submit" name="save">Save</button>
</form>

Once the form is received in PHP your $_POST should contain something like this:

array (
  'email_id' => '12',
  'email_content' => 
  array (
    'en' => '',
    'fr' => 'French text',
    'ru' => '',
  ),
  'save' => '',
)

PHP part

To save multiple values in PHP using PDO you need to use a loop. Before the loop, you should prepare the statement and bind parameters. PDO_stmt::bind_param() is rarely used, but in this situation it can make your code cleaner.

$stmt = $pdo->prepare("INSERT INTO emailtemplates (email_id,email_lang,email_content) 
                        VALUES (:email_id, :email_lang, :email_content)");
$stmt->bindParam('email_id', $_POST['email_id']);
$stmt->bindParam('email_lang', $lang);
$stmt->bindParam('email_content', $contents);

foreach ($_POST['email_content'] as $lang => $contents) {
    if ($contents && in_array($lang, $languages, true)) {
        $stmt->execute();
    }
}

If you wish to use the simpler syntax you can use PDO_stmt::execute() to pass the parameters without prior binding.

$stmt = $pdo->prepare("INSERT INTO emailtemplates (email_id,email_lang,email_content) 
                        VALUES (:email_id, :email_lang, :email_content)");

foreach ($_POST['email_content'] as $lang => $contents) {
    if ($contents && in_array($lang, $languages, true)) {
        $stmt->execute([
            'email_id' => $_POST['email_id'],
            'email_lang' => $lang,
            'email_content' => $contents,
        ]);
    }
}

The following line checks if contents were provided and language is in the array of languages you specified.

if ($contents && in_array($lang, $languages, true)) {

来源：https://stackoverflow.com/questions/64910833/how-store-multiple-language-textfield-in-mysql-with-php