如何通过SQL向数据库添加一系列值？

Question

I need to be able to send a range of Date values to my database. Here is my current working solution for adding a single date at a time:

HTML: EDIT: I updated the HTML form to include the from/to fields instead of a single field.

<form method="post" action="/PHP/update.php">
<table width="400" border="0" cellspacing="1" cellpadding="2">
<tr>
<td width="100">From:</td>
<td><input name="fromdate" type="date" id="fromdate"></td>
</tr>
<tr>
<td width="100">To:</td>
<td><input name="todate" type="date" id="todate"></td>
</tr>
<tr>
<td width="100">Customer Name</td>
<td><input name="name" type="text" id="name"></td>
</tr>
<tr>
<td width="100"> </td>
<td> </td>
</tr>
<tr>
<td width="100"> </td>
<td>
<input name="update" type="submit" id="update" value="Update">
</td>
</tr>
</table>
</form>

PHP:

<?php

header( "refresh:2;url=/protected/update.html" );

if(isset($_POST['update']))
{
$dbhost = 'localhost';
$dbuser = 'USER';
$dbpass = 'PASS';
$conn = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
  die('Could not connect: ' . mysql_error());
}

$date = $_POST['date'];
$name = $_POST['name'];

$sql = "INSERT INTO calendar (date, customer)
VALUES ('$date', '$name')";

mysqli_select_db($conn, 'website_main');
$retval = mysqli_query( $conn, $sql );
if(! $retval )
{
  die('Could not update data: ' . mysqli_error($conn));
}
echo "Updated data successfully,\n";
echo "You will be re-directed shortly.\n";
mysqli_close($conn);
}
else
{
?>
<?php
}
?>

This setup currently allows me to send a single date per click of the update button in the html form.

However I would like to edit the form ( which I can do myself ) to have Dates: From [dd/mm/yyyy] to [dd/mm/yyy]. and then when I hit update, the PHP would be able to fill in the blanks eg if it were 01/01/2016 to 03/01/2016, the PHP would submit to the database 01/01/2016, 02/01/2016 and 03/01/2016.

I am a total PHP noob, and had a lot of issues even trying to get the single date submission working. Any and all help would be appreciated.

EDIT: I should have clarified this to begin with, my apologies. The Database is linked up to a calendar which updates and marks the dates red which are in the database. Because of this, each date MUST have an individual entry in the table. I CANNOT have startDate and endDate as 2 seperate columns in the same entry, due to the way that I have already setup the calendar. Is there any way around this without having to redo the code for my calendar?

Answer 1

In your case I would have preferred using just two dates start_date and end_date and compare every date while retrieving data. Well according to your requirement you can use this code and save comma separated dates.

  while (strtotime($date) <= strtotime($end_date)) {
     echo "$date\n";
     $date = date ("Y-m-d", strtotime("+1 day", strtotime($date)));
 }

However the former one will be the right solution.

Answer 2

You should catch both date parameters and save it in the database. You can do it with:

$todate = $_POST['fromdate'];
$fromdate = $_POST['todate'];

Then you need to add a new column in your table. The new SQL can look like:

$sql = "INSERT INTO calendar (fromdate,todate, customer)
VALUES ('".$fromdate."', '".$todate."', '".$name."')";

With the columns fromdate, todate and customer. If you want to fill in the blank fields you should make a PHP file for the form. Then you have a method to hand over the attributes. Like sending it via GET.

header( "refresh:2;url=/protected/update.php" );

if(isset($_POST['update']))
{
$dbhost = 'localhost';
$dbuser = 'USER';
$dbpass = 'PASS';
$conn = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
  die('Could not connect: ' . mysql_error());
}

$todate = $_POST['fromdate'];
$fromdate = $_POST['todate'];
$name = $_POST['name'];

$sql = "INSERT INTO calendar (fromdate,todate, customer)
VALUES ('".$fromdate."', '".$todate."', '".$name."')";

mysqli_select_db($conn, 'website_main');
$retval = mysqli_query( $conn, $sql );
if(! $retval )
{
  die('Could not update data: ' . mysqli_error($conn));
}
echo "Updated data successfully,\n";
echo "You will be re-directed shortly.\n";
mysqli_close($conn);
}
else
{
?>
<?php
}

Answer 3

Huge thanks to Harish Lalwani for pointing me down the right line for this.

A slight adaption to his suggestion worked a treat and I have managed to create a while loop which increments the date each loop until it reaches the end date.

The working PHP:

<?php

header( "refresh:2;url=/protected/update.html" );

if(isset($_POST['update']))
{
$dbhost = 'localhost';
$dbuser = 'aidan';
$dbpass = 'Bathgate69107965';
$conn = mysqli_connect($dbhost, $dbuser, $dbpass);
if(! $conn )
{
  die('Could not connect: ' . mysql_error());
}

$fromDate = $_POST['fromdate'];
$toDate = $_POST['todate'];
$name = $_POST['name'];

$date = $fromDate;

  while ($date <= $toDate) {

$sql = "INSERT INTO calendar (date, customer)
VALUES ('$date', '$name')";

mysqli_select_db($conn, 'website_main');
$retval = mysqli_query( $conn, $sql );
if(! $retval )
{
  die('Could not update data: ' . mysqli_error($conn));
}
echo "Updated data successfully,\n";

$date = date ("Y-m-d", strtotime("+1 day", strtotime($date)));

}
echo "You will be re-directed shortly.\n";
mysqli_close($conn);
}
else
{
?>
<?php
}
?>