How do you make your variables?

Question

1. oneword
2. under_score
3. lowerCaseFirstWord
4. UpperCaseWords
5. UPPERONEWORD
6. UPPER_UNDER_SCORE

Answer 1

The standard one to use for Php variable naming should be 2 and 3, underscore and camelCase.

For Php framework/libs that exist for quite so time like Wordpress, its coding uses underscore. But more and more new Php framework use camelCase to code now.

4 is for class name use.
5 and 6 for constant name use.

Answer 2

1 or 3: camel 🐪 case

Answer 3

generally:
camelCase for methods/variables
CapsCase for classes
ALL_CAPS for constants

Answer 4

In my case, I prefer 2

Answer 5

1 and 3 for variables
5 and 6 for constants

Answer 6

for me it's 3 : clear and compact 😄
forMeItsThreeClearAndCompact