RE: [PHP] if statement help
On 03 November 2005 15:26, Brent Baisley wrote: You only need one if. The parenthesis will evaluation order. if( ( !empty( $var1 ) || ( !empty( $var2 ) !empty( $var3 ) ) || $var1 == something ) However, the $var1==something test is redundant in this, since if that is true the !empty($var1) test will also be true and the rest of the test will not be evaluated. Cheers! Mike - Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning Information Services, JG125, James Graham Building, Leeds Metropolitan University, Headingley Campus, LEEDS, LS6 3QS, United Kingdom Email: [EMAIL PROTECTED] Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] if statement help
I am trying to determine if it is worth my time to attempt a if
statement similar to the following. I am asking because I have not
found any references to something like this:
if( ( !empty( $var1 ) ) || ( if( !empty( $var2 ) ) ( !empty( $var3 )
) ) || ( $var1 == something ) ) {
// do something fancy
}
--
Jason Gerfen
My girlfriend threated to
leave me if I went boarding...
I will miss her.
~ DIATRIBE aka FBITKK
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Re: [PHP] if statement help
You only need one if. The parenthesis will evaluation order.
if( ( !empty( $var1 ) || ( !empty( $var2 ) !empty( $var3 ) ) ||
$var1 == something )
On Nov 3, 2005, at 10:13 AM, Jason Gerfen wrote:
I am trying to determine if it is worth my time to attempt a if
statement similar to the following. I am asking because I have not
found any references to something like this:
if( ( !empty( $var1 ) ) || ( if( !empty( $var2 ) ) ( !empty
( $var3 ) ) ) || ( $var1 == something ) ) {
// do something fancy
}
--
Jason Gerfen
My girlfriend threated to
leave me if I went boarding...
I will miss her.
~ DIATRIBE aka FBITKK
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
Brent Baisley
Systems Architect
Landover Associates, Inc.
Search Advisory Services for Advanced Technology Environments
p: 212.759.6400/800.759.0577
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[PHP] sql statement help needed
hello, i've had to change some of my tables to accomodate some greater flexibility in the application that uses it and because of this i need to go through and update all the records. i've done one table by hand and it had about 100 records and took about 20 minutes. but this next table has about 550 records and i really don't feel like doing this all by hand. i'm using MySQL Control Center to do this editing so i'd like to know if there's a single SQL statement i could use to update all the rows. here is a simple representation: products: (pay no attention to the poor choice in column names. this is a retrofitting and will be fixed in later versions.) +--+---+ | id | sequential_id | +--+---+ | PRDX-41 | 1 | | ABCX-01 | 2 | | FF00-11 | 3 | \/\/\/\/\/\/\/\/ | ETC0-99 | 500 | +--+---+ the 'prod_sequential_id' column was added later to the products_categories table. products_categories: +-+-+++ | id | prod_id | prod_sequential_id | cat_id | +-+-+++ | 1 | PRDX-41 | 0 | 41 | | 2 | PRDX-41 | 0 | 15 | | 3 | ABCX-01 | 0 | 13 | | 4 | FF00-11 | 0 | 89 | \/\/\/\/\/\/\/\/ | 610 | ETC0-99 | 0 | 41 | +-+-+++ so... as you can see, prod_sequential_id has all 0's in its column. it should contain the value of products.sequential_id WHERE products_categories.prod_id = products.id. the problem is that i'm not sure how to do this all in one statement (or if it's even possible): (i know the following does not work, but it's basically the logic i think i need.) UPDATE products_categories AS pc, products AS p SET pc.prod_sequential_id = p.id WHERE pc.prod_id = p.id; thanks for your help. chris. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] sql statement help needed
- Original Message - From: Chris W. Parker [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, July 01, 2004 3:33 AM Subject: [PHP] sql statement help needed hello, i've had to change some of my tables to accomodate some greater flexibility in the application that uses it and because of this i need to go through and update all the records. i've done one table by hand and it had about 100 records and took about 20 minutes. but this next table has about 550 records and i really don't feel like doing this all by hand. i'm using MySQL Control Center to do this editing so i'd like to know if there's a single SQL statement i could use to update all the rows. here is a simple representation: products: (pay no attention to the poor choice in column names. this is a retrofitting and will be fixed in later versions.) +--+---+ | id | sequential_id | +--+---+ | PRDX-41 | 1 | | ABCX-01 | 2 | | FF00-11 | 3 | \/\/\/\/\/\/\/\/ | ETC0-99 | 500 | +--+---+ the 'prod_sequential_id' column was added later to the products_categories table. products_categories: +-+-+++ | id | prod_id | prod_sequential_id | cat_id | +-+-+++ | 1 | PRDX-41 | 0 | 41 | | 2 | PRDX-41 | 0 | 15 | | 3 | ABCX-01 | 0 | 13 | | 4 | FF00-11 | 0 | 89 | \/\/\/\/\/\/\/\/ | 610 | ETC0-99 | 0 | 41 | +-+-+++ so... as you can see, prod_sequential_id has all 0's in its column. it should contain the value of products.sequential_id WHERE products_categories.prod_id = products.id. the problem is that i'm not sure how to do this all in one statement (or if it's even possible): (i know the following does not work, but it's basically the logic i think i need.) UPDATE products_categories AS pc, products AS p SET pc.prod_sequential_id = p.id WHERE pc.prod_id = p.id; why can't you do like this. UPDATE products_categories set prod_sequential_id = prod_id in one go. Thanks Binay thanks for your help. chris. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
