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Showing results for tags 'boolean'.
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Need some pointers. User (usr), Application (app), and Permission (acs) tables. Need an SQL to ascertain access levels for read, modify, and admin.. A record in asc is NOT guaranteed! in the app table for example if ap_read = 1 then we need not a record in acs to read whatever is there. If however it was 0 we would need a record in asc with read = 1 for that app/usr combo I currently open and query these three separately, and it works, but there has to be a more elegant way. not EXACTLY normalized.. I guess. I hope the question is descriptive enough.
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Hi there, I have a simple question to ask: Say i have a PHP script: <?php var_dump($undeclaredVariable); /* The output is NULL */ if($a==$b) { if($c == $d) { $undeclaredVariable = TRUE; } else { $undeclaredVariable = FALSE; } } if($undeclaredVariable == TRUE) { echo 'the undeclared variable is TRUE'; } if($undeclaredVariable == FALSE) { echo 'the undeclared variable is FALSE'; } ?> Reading the PHP Type Comparison Table: $x = null; boolean if($x) = FALSE Using the code above, I see the "the undeclared variable is FALSE", which is OK since it proves the PHP documentation. But as you can see, if $a !=$b then the $undeclaredVarable will not be declared(defined). Is this an "OK" way to work this out? Or should I find a way to declare the variable whatever the case? Thanks in advance, Christos
