[PHP-DB] supporting multiple databases...
Hiya. I'm writing an application which needs to make SQL queries, and I'd like to give it support for multiple database servers, starting with MySQL and PostgreSQL. I see that other folks have done this with a variety of methods, and I can't see a clear winner. Option 1 - Drop in a set of db-related functions as part of the install procedure. I.e. a file db_func.php is copied from db_func.php-pg or db_func.php-my as part of the install procedure. The functions contained will return equivalent results. This has the advantage of leaving the installed application more streamlined, but it requires better coordination between functions and things that call them; your total number of db functions is multiplied by the number of databases supported. Option 2 - Select function behaviour based on a config variable. That is, the same database functions will run, but there can be if() or switch() statements to control how the db is dealt with. This keeps the function list tighter, but it seems to make for less elegant and probably less maintainable code. Option 3 - Write relatively generic database functions, but control the format of SELECTs and even the db connect functions called from config variables. This seems elegant on the surface, but make for highly obtuse code. Is there a preferred method of handling this issue, or does everybody just roll their own? -- Paul Chvostek [EMAIL PROTECTED] it.canadahttp://www.it.ca/ -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] supporting multiple databases...
On Sun, 2005-01-30 at 14:42 -0500, Paul Chvostek wrote: I'm writing an application which needs to make SQL queries, and I'd like to give it support for multiple database servers, starting with MySQL and PostgreSQL. Take a look here http://www.php.net/dbx and here http://pear.php.net/package/DB . -- Josip Dzolonga, dzolonga at mt dot net dot mk -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] supporting multiple databases...
also look a this class...adodb.php a good article on it is here http://www.databasejournal.com/features/php/article.php/10898_651_1 bastien From: Josip Dzolonga [EMAIL PROTECTED] To: php-db@lists.php.net Subject: Re: [PHP-DB] supporting multiple databases... Date: Sun, 30 Jan 2005 20:49:48 +0100 On Sun, 2005-01-30 at 14:42 -0500, Paul Chvostek wrote: I'm writing an application which needs to make SQL queries, and I'd like to give it support for multiple database servers, starting with MySQL and PostgreSQL. Take a look here http://www.php.net/dbx and here http://pear.php.net/package/DB . -- Josip Dzolonga, dzolonga at mt dot net dot mk -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DB] SQL prob
Anyone that can help me with this one? I want this SQL-statement to retrive only distinct values from the original table column named (not the AS stuff) ( SELECT * , namn_2 AS sec_namn, namn_1 AS one FROM sortiment WHERE namn_1 LIKE 'H%' ) UNION ( SELECT * , UPPER( namn_2 ) AS sec_namn, namn_2 AS one FROM sortiment WHERE namn_2 LIKE 'H%' AND SUBSTRING( namn_2, 1, 1 ) LIKE BINARY 'H' ) ORDER BY one LIMIT 0 , 10 this will return, for example, the following row twice where (in the original table) namn_1 = Humulus lupulus namn_2 = Humle the two rows are identical except for the sec_namn and one created by the query. They are set to: sec_namn one HUMLEHumle HumleHumulus lupulus _bobo wieland _ [EMAIL PROTECTED] _ winamp Not playing anything right now... -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] SQL prob
use DISTINCT? On Sunday 30 January 2005 12:51 pm, Bobo Wieland wrote: Anyone that can help me with this one? I want this SQL-statement to retrive only distinct values from the original table column named (not the AS stuff) ( SELECT * , namn_2 AS sec_namn, namn_1 AS one FROM sortiment WHERE namn_1 LIKE 'H%' ) UNION ( SELECT * , UPPER( namn_2 ) AS sec_namn, namn_2 AS one FROM sortiment WHERE namn_2 LIKE 'H%' AND SUBSTRING( namn_2, 1, 1 ) LIKE BINARY 'H' ) ORDER BY one LIMIT 0 , 10 this will return, for example, the following row twice where (in the original table) namn_1 = Humulus lupulus namn_2 = Humle the two rows are identical except for the sec_namn and one created by the query. They are set to: sec_namn one HUMLEHumle HumleHumulus lupulus _bobo wieland _ [EMAIL PROTECTED] _ winamp Not playing anything right now... -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP-DB] timestamp
thanks I tried strtotime also but getting 1970-01-01 not 2005-01-28. my problem is that the date is given to me in string format i.e.Fri Jan 28 19:53:09 2005. Any other help will be appreciated. with best wishes balwant On Sat, 2005-01-29 at 22:45, Bastien Koert wrote: try $date = date(Y-m-d,strtotime($timestamp)); Best thing to use if you want to do calcs on date/time data is to use the unix time stamp...translates the timestamp into seconds since 01-01-1970...Much simpler to use in sql queries Bastien From: Balwant Singh [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: php-db@lists.php.net Subject: [PHP-DB] timestamp Date: 29 Jan 2005 19:47:35 +0530 i am facing a problem i have timestamp in string format -- Fri Jan 28 19:53:09 2005 now i want to get the date from it. is it possible? pls. help. on using strftime(%D,$timestamp) it is giving 01/01/70. May pls. help me. Also pls. let me know whether calculation can be done in mysql on this string timestamp. pls. inform. with best wishes balwant -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] timestamp
what about something like this? $strdate = Fri Jan 28 19:53:09 2005; // place your date string here $newstr = substr_replace($strdate, '', 11, -5); // removes the time from your date string, bringing it inline with format required by strtotime() $tmstmp = strtotime($newstr); $date = date(Y-m-d,$tmstmp); Cheers, Dianne - Original Message - From: Balwant Singh [EMAIL PROTECTED] To: Bastien Koert [EMAIL PROTECTED] Cc: php-db@lists.php.net Sent: Sunday, January 30, 2005 11:32 PM Subject: RE: [PHP-DB] timestamp thanks I tried strtotime also but getting 1970-01-01 not 2005-01-28. my problem is that the date is given to me in string format i.e.Fri Jan 28 19:53:09 2005. Any other help will be appreciated. with best wishes balwant On Sat, 2005-01-29 at 22:45, Bastien Koert wrote: try $date = date(Y-m-d,strtotime($timestamp)); Best thing to use if you want to do calcs on date/time data is to use the unix time stamp...translates the timestamp into seconds since 01-01-1970...Much simpler to use in sql queries Bastien From: Balwant Singh [EMAIL PROTECTED] Reply-To: [EMAIL PROTECTED] To: php-db@lists.php.net Subject: [PHP-DB] timestamp Date: 29 Jan 2005 19:47:35 +0530 i am facing a problem i have timestamp in string format -- Fri Jan 28 19:53:09 2005 now i want to get the date from it. is it possible? pls. help. on using strftime(%D,$timestamp) it is giving 01/01/70. May pls. help me. Also pls. let me know whether calculation can be done in mysql on this string timestamp. pls. inform. with best wishes balwant -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
