RE: [PHP-DB] Ifs, ands, or buts
> Lets say I wanted to check a bunch of fields to make sure they weren't
> empty. I can check one field by saying:
>
> if ($field1) {
> echo "Field 1 is not empty";
> }
I'd use empty() since certain values would cause your if to evalute to false
http://www.php.net/manual/en/function.empty.php
if(!empty($field1){
> Can't I just say:
>
> if ($field1 and $field2 and $field3 and $field4) {
> echo "All four fields are field in";
> }
Have you tried it?
Once again, I'd use empty()
if(!empty($field1) && !empty($field2) !empty($field3) !empty($field4)){
I like '&&', rather than 'and', but that's just me.
> if ($field1 or $field2 or $field3 or $field4) {
> echo "At least one of the four fields is filled in";
> }
See above but replace '&&' with '||' or 'or'
> Maybe its not the word "and" and "or" but maybe its && or ||
> respectively? That's what I've seen in other languages that let you do
> this. I'm sure there must be a way to do this with PHP, too.
http://www.php.net/manual/en/language.operators.logical.php
Tha manual is your friend, it can answer a lot of your questions. Once
again, I don't see what this has to do with databases.
--
PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] Ifs, ands, or buts
Diana,
Diana Cassady said:
> Another one that should be easy that I am just not finding anywhere in
> the manual.
>
> How do I put an 'and' or an 'or' in an if statement?
>
> I know I could achieve the same results with multiple if statements,
> but that seems so inefficient.
>
> Lets say I wanted to check a bunch of fields to make sure they weren't
> empty. I can check one field by saying:
>
> if ($field1) {
> echo "Field 1 is not empty";
> }
>
> Can't I just say:
>
> if ($field1 and $field2 and $field3 and $field4) {
> echo "All four fields are field in";
> }
>
> Or
>
> if ($field1 or $field2 or $field3 or $field4) {
> echo "At least one of the four fields is filled in";
> }
>
> ?
>
> Maybe its not the word "and" and "or" but maybe its && or ||
You solved it yourself. && means 'AND' , || means 'OR'
> respectively? That's what I've seen in other languages that let you do
> this. I'm sure there must be a way to do this with PHP, too.
>
> Thanks for your help.
>
> Diana
> [EMAIL PROTECTED] "Will Work for Chocolate"
> http://www.vivaladata.com (and its worth every byte!)
>
> --
> PHP Database Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
>
>
--
Once a problem is defined - it is half way solved. (Henry Ford)
--
PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] Ifs, ands, or buts
http://www.php.net/manual/en/language.operators.logical.php -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
