php编辑用户信息

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我是靠谱客的博主超级篮球，最近开发中收集的这篇文章主要介绍php编辑用户信息，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

<?php # Script 10.3 - edit_user.php
// This page is for editing a user record.
// This page is accessed through view_users.php.

$page_title = 'Edit a User';

echo '<h1>Edit a User</h1>';

// Check for a valid user ID, through GET or POST:
if ( (isset($_GET['id'])) && (is_numeric($_GET['id'])) ) { // From view_users.php
$id = $_GET['id'];
} elseif ( (isset($_POST['id'])) && (is_numeric($_POST['id'])) ) { // Form submission.
$id = $_POST['id'];
} else { // No valid ID, kill the script.
echo '<p class="error">This page has been accessed in error.</p>';

exit();
}

require ('c.php');

// Check if the form has been submitted:
if ($_SERVER['REQUEST_METHOD'] == 'POST') {

$errors = array();

// Check for a first name:
if (empty($_POST['first_name'])) {
$errors[] = 'You forgot to enter your first name.';
} else {
$fn = mysqli_real_escape_string($dbc, trim($_POST['first_name']));
}

// Check for a last name:
if (empty($_POST['last_name'])) {
$errors[] = 'You forgot to enter your last name.';
} else {
$ln = mysqli_real_escape_string($dbc, trim($_POST['last_name']));
}

// Check for an email address:
if (empty($_POST['email'])) {
$errors[] = 'You forgot to enter your email address.';
} else {
$e = mysqli_real_escape_string($dbc, trim($_POST['email']));
}

if (empty($errors)) { // If everything's OK.

// Test for unique email address:
$q = "SELECT user_id FROM user WHERE email='$e' AND user_id != $id";
$r = @mysqli_query($dbc, $q);
if (mysqli_num_rows($r) == 0) {

// Make the query:
$q = "UPDATE user SET first_name='$fn', last_name='$ln', email='$e' WHERE user_id=$id LIMIT 1";
$r = @mysqli_query ($dbc, $q);
if (mysqli_affected_rows($dbc) == 1) { // If it ran OK.

// Print a message:
echo '<p>The user has been edited.</p>';

} else { // If it did not run OK.
echo '<p class="error">The user could not be edited due to a system error. We apologize for any inconvenience.</p>'; // Public message.
echo '<p>' . mysqli_error($dbc) . '<br />Query: ' . $q . '</p>'; // Debugging message.
}

} else { // Already registered.
echo '<p class="error">The email address has already been registered.</p>';
}

} else { // Report the errors.

echo '<p class="error">The following error(s) occurred:<br />';
foreach ($errors as $msg) { // Print each error.
echo " - $msg<br />n";
}
echo '</p><p>Please try again.</p>';

} // End of if (empty($errors)) IF.

} // End of submit conditional.

// Always show the form...

// Retrieve the user's information:
$q = "SELECT first_name, last_name, email FROM user WHERE user_id=$id";
$r = @mysqli_query ($dbc, $q);

if (mysqli_num_rows($r) == 1) { // Valid user ID, show the form.

// Get the user's information:
$row = mysqli_fetch_array ($r, MYSQLI_NUM);

// Create the form:
echo '<form action="edit_user.php" method="post">
<p>First Name: <input type="text" name="first_name" size="15" maxlength="15" value="' . $row[0] . '" /></p>
<p>Last Name: <input type="text" name="last_name" size="15" maxlength="30" value="' . $row[1] . '" /></p>
<p>Email Address: <input type="text" name="email" size="20" maxlength="60" value="' . $row[2] . '" /> </p>
<p><input type="submit" name="submit" value="Submit" /></p>
<input type="hidden" name="id" value="' . $id . '" />
</form>';

} else { // Not a valid user ID.
echo '<p class="error">This page has been accessed in error.</p>';
}

mysqli_close($dbc);

?>