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Editorial Team
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Asked: 2026-06-09T17:30:54+00:00

I got the application below from this page so that I can test character

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I got the application below from this page so that I can test character encoding on a MySQL database. I have created the database using the query listed on the same page, i.e.:

CREATE TABLE `texts` (
  `id` INT(11) unsigned NOT NULL AUTO_INCREMENT,
  `content` TEXT,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

And entered the details for connecting to my database, which I’m sure are correct. However, for some reason nothing is getting submitted to my database, and when I manually add an entry to the database, I get the following error below ‘Output Test’:

Notice: Undefined index: text in /home/…./php/encoding_test.php on
line 56

I wonder if some can spot what the issue might be?

<?php

error_reporting(E_ALL);
ini_set('display_errors', true);

header('Content-Type: text/html; charset=utf-8');

$pdo = new PDO('mysql:dbname=encoding_test;host=localhost', 'user', 'pass',
               array(PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES utf8'));

if (!empty($_POST['text'])) {
    $stmt = $pdo->prepare('INSERT INTO `texts` (`text`) VALUES (:text)');
    $stmt->execute(array('text' => $_POST['text']));
}

$results = $pdo->query('SELECT * FROM `texts`')->fetchAll(PDO::FETCH_ASSOC);

?>
<!DOCTYPE html>

<html>
<head>
    <title>UTF-8 encoding test</title>
</head>
<body>

<h1>Display test</h1>

<p>
A good day, World!<br>
Schönen Tag, Welt!<br>
Une bonne journée, tout le monde!<br>
يوم جيد، العالم<br>
좋은 일, 세계!<br>
Một ngày tốt lành, thế giới!<br>
こんにちは、世界！<br>
</p>

<h1>Submission test</h1>

<form action="" method="post" accept-charset="utf-8">
    <textarea name="text"></textarea>
    <input type="submit" value="Submit">
</form>

<?php if (!empty($_POST['text'])) : ?>
    <h2>Last received data</h2>
    <pre><?php echo htmlspecialchars($_POST['text'], ENT_NOQUOTES, 'UTF-8'); ?></pre>
<?php endif; ?>

<h1>Output test</h1>

<ul>
    <?php foreach ($results as $result) : ?>
        <li>
            <pre><?php echo htmlspecialchars($result['text'], ENT_NOQUOTES, 'UTF-8'); ?></pre>
        </li>
    <?php endforeach; ?>
</ul>

</body>
</html>
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1 Answer

  1. Editorial Team
    ALTER TABLE `texts` CHANGE `content` `text` TEXT;

    According to your PHP code, you work with table texts as it contains column named text, but in your schema this column has name content
    So you need to rename column content to text by using above query.

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