I often see strlen used. Are these 2 tests equivalent for all values of $str?
is_string($str) && 0 !== strlen($str)
is_string($str) && '' !== $str
I often see strlen used. Are these 2 tests equivalent for all values of
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I often see strlen used. Are these 2 tests equivalent for all values of $str?
is_string($str) && 0 !== strlen($str)
is_string($str) && '' !== $str
Yes, those two statements are logically equivalent. My preferred ways to skin this cat:
…though
empty('0')istrue(sigh, PHP…), so this is probably even better:See also: Checking if the string is empty and Is there a difference between $str == '' and strlen($str) == 0 in PHP?