Updating multiple MySql entrys - php

Question

I've been working on creating an internal site for our company. I haven't had many issues until now. I have been able to retrieve and insert data into my database, but now for some reason when I try to UPDATE an entry, the database can't be selected for some strange reason. I've attached a copy of my code thus far. I don't know what I am missing. Thank you!
This is my code for looking up the information in the database:
<?php
session_start();
$transport = mysqli_connect("localhost", "user", "pw", "db_name");
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
?>
<?php
$raw_date = $_POST['appt_date'];
$date = date("Y-m-d", strtotime($raw_date));
if ($raw_date == '') {
echo "Please go back and pick a date";
exit;
}
$sql = "SELECT * FROM appointments WHERE date = '".$date."' ORDER BY appttime";
$result = mysqli_query($transport, $sql);
$i=0;
echo "<h2 align='center'>Schedule for $raw_date</h2>";
echo "<table border='2' style='width: 100%; margin: auto; border-width: 1px'><tr><th>Resident Name</th><th>APT #</th><th>Appt. Time</th><th>Location Phone</th><th>Location Name</th><th>Address</th><th>City</th><th>Zip</th><th>Bus or Car</th><th>Escort Name</th><th>Transfer</th><th>Comments</th><th>Dparting Times</th></tr>";
echo "<form name='update_times' method='post' action='depart.php'>\n";
while($row = mysqli_fetch_array($result))
{
echo "<input type='hidden' name='id[$i]' value=" . $row['id'] . "";
echo "<tr>";
echo "<td align='center'>" . $row['r_name'] . "</td>";
echo "<td align='center'>" . $row['room'] . "</td>";
echo "<td align='center'>" . date("g:i A", strtotime($row['appttime'])) . "</td>";
echo "<td align='center'>" . $row['apptphone'] . "</td>";
echo "<td align='center'>" . $row['l_name'] . "</td>";
echo "<td align='center'>" . $row['address'] . "</td>";
echo "<td align='center'>" . $row['city'] . "</td>";
echo "<td align='center'>" . $row['zip'] . "</td>";
echo "<td align='center'>" . $row['buscar'] . "</td>";
echo "<td align='center'>" . $row['escort_name'] . "</td>";
echo "<td align='center'>" . $row['transfer'] . "</td>";
echo "<td align='center'>" . $row['comments'] . "</td>";
echo "<td align='center'><input name='out[$i]' style='width: 70px' type='text' value='" . date("g:i A", strtotime($row['depart'])) . "' /></td>";
echo "</tr>";
++$i;
}
echo "<input type='submit' value='Set Depart Times'>";
echo "</form>";
echo "</table>";
$_SESSION['sessionVar'] = $raw_date;
?>
This is the update code:
<?php
session_start();
$transport = mysqli_connect('localhost', 'user', 'pw', 'db_name');
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
?>
<?php
$size = count($_POST['out']);
$i=0;
while ($i < $size)
{
$departing = $_POST['out'][$i];
$departing = date("H:i:s:u",strtotime($departing));
$id = $_POST['id'][$i];
$sql = "UPDATE transport.appointments SET depart = $departing WHERE id = $id";
mysqli_query($transport, $sql) or die ("Error in query: $sql");
echo "Depart times updated!";
++$i;
}
mysql_close($transport);
?>
For some reason the update code doesn't want to select my database. Thank you again!

Answer 1

The MySQL UPDATE syntax is:
UPDATE table_name SET column1=value1,column2=value2,... WHERE some_column=some_value;
It looks like you've tried to reference your database and your table in the UPDATE query: transport.appointments. I might be wrong, but I can't find anything on the internet saying that is valid syntax.
Try just referencing the table:
$sql = "UPDATE appointments SET depart = $departing WHERE id = $id";