Solved

Slash between values question

Posted on 2010-08-25
5
350 Views
Last Modified: 2012-05-10
Hello experts!

I have 10 columns in my database called table_nightclub_1, table_nightclub_2, table_nightclub_3, table_nightclub_4 and so on. Datatype = enum('Y', 'N', '').

Y if the table is booked - N if not.

How can I echo '1 / 2 / 3' if table 1, 2 and 3 are booked? And only '1' if table 1 is booked? '8 / 9' if table 8 and 9 are booked.

I can't find a smart way to make a slash between the values:-/ Hope someone can help me!

Thanks in advance!
0
Comment
Question by:sittinDuck
  • 3
  • 2
5 Comments
 
LVL 40

Expert Comment

by:Richard Quadling
ID: 33526654
Try this. Uses closures and array functions.Outputs ...1 / 4 / 7 / 10
<?php
// Assuming data coming from database is in 1 row.
$data = array
	(
	'table_nightclub_1' => 'Y',
	'table_nightclub_2' => 'N',
	'table_nightclub_3' => 'N',
	'table_nightclub_4' => 'Y',
	'table_nightclub_5' => 'N',
	'table_nightclub_6' => 'N',
	'table_nightclub_7' => 'Y',
	'table_nightclub_8' => 'N',
	'table_nightclub_9' => 'N',
	'table_nightclub_10' => 'Y',
	);

echo
	implode // Step 4 : Implode them.
		(
		' / ',
		array_map // Step 3 : Drop the textual part of the keys.
			(
			function($value)
				{
				return substr($value, strlen('table_nightclub_'));
				},
			array_keys // Step 2 : Get the keys from the remaining 'Y's.
				(
				array_filter // Step 1 : Remove 'N's from array.
					(
					$data,
					function($value)
						{
						return 'N' != $value;
						}
					)
				)
			)
		);

Open in new window

0
 
LVL 40

Expert Comment

by:Richard Quadling
ID: 33526674
Another option would be to do it in SQL ...


SELECT
      CASE WHEN table_nightclub_1 = 'Y' THEN '1 / ' ELSE '' END +
      CASE WHEN table_nightclub_2 = 'Y' THEN '2 / ' ELSE '' END +
      CASE WHEN table_nightclub_3 = 'Y' THEN '3 / ' ELSE '' END +
      CASE WHEN table_nightclub_4 = 'Y' THEN '4 / ' ELSE '' END +
      CASE WHEN table_nightclub_5 = 'Y' THEN '5 / ' ELSE '' END +
      CASE WHEN table_nightclub_6 = 'Y' THEN '6 / ' ELSE '' END +
      CASE WHEN table_nightclub_7 = 'Y' THEN '7 / ' ELSE '' END +
      CASE WHEN table_nightclub_8 = 'Y' THEN '8 / ' ELSE '' END +
      CASE WHEN table_nightclub_9 = 'Y' THEN '9 / ' ELSE '' END +
      CASE WHEN table_nightclub_10 = 'Y' THEN '10' ELSE '' END
            AS Booked
FROM
      table

and in PHP

$Booked = trim($data['Booked'], ' /');

sort of thing.
0
 

Author Comment

by:sittinDuck
ID: 33526720
There was an error with the first solution

Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /home/tabelreservation.dk/wwwroot/test.php on line 23
0
 
LVL 40

Accepted Solution

by:
Richard Quadling earned 500 total points
ID: 33526740
You're not on V5.3?

Old style equivalent.
<?php
// Assuming data coming from database is in 1 row.
$data = array
	(
	'table_nightclub_1' => 'Y',
	'table_nightclub_2' => 'N',
	'table_nightclub_3' => 'N',
	'table_nightclub_4' => 'Y',
	'table_nightclub_5' => 'N',
	'table_nightclub_6' => 'N',
	'table_nightclub_7' => 'Y',
	'table_nightclub_8' => 'N',
	'table_nightclub_9' => 'N',
	'table_nightclub_10' => 'Y',
	);

function Step1($value)
	{
	return 'N' != $value;
	}

function Step3($value)
	{
	return substr($value, strlen('table_nightclub_'));
	}

echo
	implode // Step 4 : Implode them.
		(
		' / ',
		array_map // Step 3 : Drop the textual part of the keys.
			(
			'Step3',
			array_keys // Step 2 : Get the keys from the remaining 'Y's.
				(
				array_filter // Step 1 : Remove 'N's from array.
					(
					$data,
					'Step1'
					)
				)
			)
		);

Open in new window

0
 

Author Closing Comment

by:sittinDuck
ID: 33526760
THANK you :-)

Just what I needed!
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Checking CSRF token within a function 36 76
javascript: add id amounts 5 47
error log using ftp 7 41
Showing random records from database 10 37
This article will explain how to display the first page of your Microsoft Word documents (e.g. .doc, .docx, etc...) as images in a web page programatically. I have scoured the web on a way to do this unsuccessfully. The goal is to produce something …
Developers of all skill levels should learn to use current best practices when developing websites. However many developers, new and old, fall into the trap of using deprecated features because this is what so many tutorials and books tell them to u…
The viewer will learn how to create and use a small PHP class to apply a watermark to an image. This video shows the viewer the setup for the PHP watermark as well as important coding language. Continue to Part 2 to learn the core code used in creat…
This tutorial will teach you the core code needed to finalize the addition of a watermark to your image. The viewer will use a small PHP class to learn and create a watermark.

831 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question