troubleshooting Question
I do not understand a while that came from database table rows
asked on <!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Add a Task</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<?php # Script 8.7 - add_task.php #3 (in this chapter)
// This page adds tasks to the tasks table using PDO.
// Try to connect to the database:
try {
$postTask=$_POST['task'];
// Create the object:
$pdo = new PDO('mysql:dbname=test;host=localhost', 'username', 'password');
// Check for a form submission:
if (($_SERVER['REQUEST_METHOD'] == 'POST') && !empty($_POST['task'])) {
// Minimal validation:
if (isset($_POST['parent_id']) &&
filter_var($_POST['parent_id'], FILTER_VALIDATE_INT, array('min_range' => 1)) ) {
$parent_id = $_POST['parent_id'];
} else {
$parent_id = 0;
}
// Add the task to the database:
$q = 'INSERT INTO tasks (parent_id, task) VALUES (:parent_id, :task)';
$stmt = $pdo->prepare($q);
// Confirm the results:
if ($stmt->execute(array(':parent_id' => $parent_id, ':task' => $_POST['task']))) {
echo '<p>The task has been added!</p>';
} else {
echo '<p>The task could not be added!</p>';
}
} // End of submission IF.
// Start the form:
echo '<form action="add_task.php" method="post">
<fieldset>
<legend>Add a Task</legend>
<p>Task: <input name="task" type="text" size="60" maxlength="100"></p>
<p>Parent Task: <select name="parent_id"><option value="0">None</option>';
// Run the query:
$q = 'SELECT task_id, task FROM tasks WHERE date_completed="0000-00-00 00:00:00" ORDER BY date_added ASC';
$r = $pdo->query($q);
// Set the fetch mode:
$r->setFetchMode(PDO::FETCH_NUM);
// Show the results:
while ($row = $r->fetch()) {
echo "<option value=\"$row[0]\">$row[1]</option>\n";
}
// Complete the form:
echo '</select></p>
<input name="submit" type="submit" value="Add This Task">
</fieldset>
</form>';
// Unset the object:
unset($pdo);
} catch (PDOException $e) { // Report the error!
echo '<p class="error">An error occurred: ' . $e->getMessage() . '</p>';
}
?>
</body>
</html>
I still do not understand THIS while statement
I have investigated while on php.net and w3schools
but I do not understand a while that came from database table rows
Learn from the best
Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.
Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 4 Answers and 8 Comments.
Try for 7 days”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.
Our community of experts have been thoroughly vetted for their expertise and industry experience.
The Most Valuable Expert award recognizes technology experts who passionately share their knowledge with the community, demonstrate the core values of this platform, and go the extra mile in all aspects of their contributions. This award is based off of nominations by EE users and experts. Multiple MVEs may be awarded each year.
This award recognizes an author who contributes the highest volume of original works or content. Recipients of this award produce extremely valuable content that prioritizes accuracy, relevancy, and professionalism.