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I’m wondering, in PHP, I’ve seen people use both these cases:
if($var === TRUE)
if($var === true)
is there an actual difference between them or a coding standard/format to be used in boolean value?
There’s no difference at all. From the docs:
According to PSR-2, as stated by both Laxus and Paul Bain in their comments, the standard is to write them in lower case.