use ' instead of " & use 0/1 instead of FALSE/TRUE

[ghost]

use ' instead of ", this is faster.
use 0/1 instead of FALSE/TRUE.

Change "null" case to Upper. NULL is constant. type

[DerManoMann]

Hmm, http://php.net/manual/en/language.types.null.php states:
"There is only one value of type null, and that is the case-insensitive keyword NULL." If it is case insensitive, it shouldn't make a difference I would think.

[garak]

• the quotes issue is and old legend. Google about it and you'll find that there's no difference.
• 0/1 instead of false/true is just wrong. 0 and 1 are integers, true and false are booleans
• the case for constant is a convention: all constants should be uppercase, except for null, true, and false

[ghost]

||||"0/1 instead of false/true is just wrong. 0 and 1 are integers, true and false are booleans""""""
1- dont see that. First check it! get a benchmark with 0/1 - false/true

""""the case for constant is a convention: all constants should be uppercase, except for null, true, and false""""
2- lol. this is YOUR law??

[garak]

Don't want to flame, but please consider:

• benchmarks are not so useful. It's better to keep a clear, readable, consistent code. Most of cost of a code is related to humans (developers), not to machines (cpu, bandwith, etc.)
• I didn't invent any conventions. Just google it around. Of course, you can use whatever you want in your project, but a public project should follow most accepted conventions as much as possible.