RE: [PHP-DB] Date Subtraction
Manoj, Just a couple of thoughts: First, I know this particular topic has been discussed here recently, so you might want to search the archives for more exhaustive information. Second, if you're using MySQL, check out the functions DATE_ADD() and MOD(). They're MySQL functions, so you'll have to implement them in your query, not the actual PHP code itself. These may or may not give you what you're looking for. You might have to drop the value of some kind of PHP variable into the DATE_ADD() INTERVAL parameter or something though. I looked quickly through the date functions in the PHP documentation and didn't find anything that would really manipulate the date for you (of course I may have missed it). The one thing that I did notice is that the PHP date and time functions return the SERVER date and time to you, not the local time for the user accessing your page. That might not be what you want. As I said before, I might have missed something, but that's what I found out after looking for all of two minutes. Rich -Original Message- From: Manoj Japher [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 21, 2002 2:23 PM To: [EMAIL PROTECTED] Subject: [PHP-DB] Date Subtraction hi, Is there any way I can get previous day's date, like we get current date by using getdate() or date() function. I mean is there some in-built function in PHP which can subtract date to give me yesterday's date. I am currently calculating it using some code, which I have written and it is very tirng and recursive to check for each possible case. If someone has solved this before pls let me know. Thanks, Regards, Manoj 'I have miles to go before I sleep, and promises to keep' -- 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] Date Subtraction
On Thursday 22 August 2002 02:23, Manoj Japher wrote: hi, Is there any way I can get previous day's date, like we get current date by using getdate() or date() function. I mean is there some in-built function in PHP which can subtract date to give me yesterday's date. I am currently calculating it using some code, which I have written and it is very tirng and recursive to check for each possible case. If someone has solved this before pls let me know. mktime() -- Jason Wong - Gremlins Associates - www.gremlins.com.hk Open Source Software Systems Integrators * Web Design Hosting * Internet Intranet Applications Development * /* The person who makes no mistakes does not usually make anything. */ -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP-DB] Date Subtraction
Oh, in MySQL, there's also DATE_SUB(). Forgot to mention that one. Rich -Original Message- From: Hutchins, Richard [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 21, 2002 2:40 PM To: 'Manoj Japher'; [EMAIL PROTECTED] Subject: RE: [PHP-DB] Date Subtraction Manoj, Just a couple of thoughts: First, I know this particular topic has been discussed here recently, so you might want to search the archives for more exhaustive information. Second, if you're using MySQL, check out the functions DATE_ADD() and MOD(). They're MySQL functions, so you'll have to implement them in your query, not the actual PHP code itself. These may or may not give you what you're looking for. You might have to drop the value of some kind of PHP variable into the DATE_ADD() INTERVAL parameter or something though. I looked quickly through the date functions in the PHP documentation and didn't find anything that would really manipulate the date for you (of course I may have missed it). The one thing that I did notice is that the PHP date and time functions return the SERVER date and time to you, not the local time for the user accessing your page. That might not be what you want. As I said before, I might have missed something, but that's what I found out after looking for all of two minutes. Rich -Original Message- From: Manoj Japher [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 21, 2002 2:23 PM To: [EMAIL PROTECTED] Subject: [PHP-DB] Date Subtraction hi, Is there any way I can get previous day's date, like we get current date by using getdate() or date() function. I mean is there some in-built function in PHP which can subtract date to give me yesterday's date. I am currently calculating it using some code, which I have written and it is very tirng and recursive to check for each possible case. If someone has solved this before pls let me know. Thanks, Regards, Manoj 'I have miles to go before I sleep, and promises to keep' -- 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
Re: Re: [PHP-DB] Date Subtraction
hi, hey you are bang on target. It did solve my problem. Thanks a lot, Manoj On Wed, 21 Aug 2002 [EMAIL PROTECTED] wrote : if you really just want yesterday, i use date(Y-m-d, time() - 86400); that way you'll get the correct info, no matter if it spans weeks, months, years etc i realize there could be flaws with this b/c it just subtracts 24hours, but it works Manoj Japher manojjapher@redif To: [EMAIL PROTECTED] fmail.com cc: Subject: [PHP-DB] Date Subtraction 08/21/2002 02:23 PM Please respond to Manoj Japher hi, Is there any way I can get previous day's date, like we get current date by using getdate() or date() function. I mean is there some in-built function in PHP which can subtract date to give me yesterday's date. I am currently calculating it using some code, which I have written and it is very tirng and recursive to check for each possible case. If someone has solved this before pls let me know. Thanks, Regards, Manoj 'I have miles to go before I sleep, and promises to keep' -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php 'I have miles to go before I sleep, and promises to keep' -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP-DB] Date Subtraction
What's more you can do some neat stuff with manipulating the timestamp to create very quick and accurate calendars. For instance for an application I had to build I had need of highlighting weeks on a calendar to change colors every two weeks, but any given day needed to know which color it should show. Since the increment of the timestamp is so predictible you can use the mod operator and do all kinds of neat stuff. Anyway, just another 2 cents worth. Ryan -Original Message- From: Manoj Japher [mailto:[EMAIL PROTECTED]] Sent: Wednesday, August 21, 2002 1:04 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: [PHP-DB] Date Subtraction hi, hey you are bang on target. It did solve my problem. Thanks a lot, Manoj On Wed, 21 Aug 2002 [EMAIL PROTECTED] wrote : if you really just want yesterday, i use date(Y-m-d, time() - 86400); that way you'll get the correct info, no matter if it spans weeks, months, years etc i realize there could be flaws with this b/c it just subtracts 24hours, but it works Manoj Japher manojjapher@redif To: [EMAIL PROTECTED] fmail.com cc: Subject: [PHP-DB] Date Subtraction 08/21/2002 02:23 PM Please respond to Manoj Japher hi, Is there any way I can get previous day's date, like we get current date by using getdate() or date() function. I mean is there some in-built function in PHP which can subtract date to give me yesterday's date. I am currently calculating it using some code, which I have written and it is very tirng and recursive to check for each possible case. If someone has solved this before pls let me know. Thanks, Regards, Manoj 'I have miles to go before I sleep, and promises to keep' -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php 'I have miles to go before I sleep, and promises to keep' -- 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
