Solved

Slash between values question

Posted on 2010-08-25
5
347 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:RQuadling
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:RQuadling
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:
RQuadling 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

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Both Easy and Powerful How easy is PHP? http://lmgtfy.com?q=how+easy+is+php (http://lmgtfy.com?q=how+easy+is+php)  Very easy.  It has been described as "a programming language even my grandmother can use." How powerful is PHP?  http://en.wikiped…
Author Note: Since this E-E article was originally written, years ago, formal testing has come into common use in the world of PHP.  PHPUnit (http://en.wikipedia.org/wiki/PHPUnit) and similar technologies have enjoyed wide adoption, making it possib…
The viewer will learn how to count occurrences of each item in an array.
The viewer will learn how to look for a specific file type in a local or remote server directory using PHP.

948 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

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now