Underlying philosophy behind php type comparisons

Question

So there\'s this page on the php site which shows the result of comparing different values:

http://php.net/manual/en/types.comparisons.php

This is a helpful refe

Answer 1

There is no particular logic, but you can figure out some patterns.

• "empty" values (null, false, 0, empty string and string '0') evaluate to false
• comparison of numeric values is done implicitly converting them to integers until some version (there was a bug when two actually different long numeric strings counted as equal, now it's fixed)
• when working with arrays, there is no difference between integer and numeric indexes, except when you call array_key_exists with explicit strict parameter
• comparing number with string implicitly converts right argument to the type of the left one
• return ($something); implicitly converts $something to string if it is not scalar