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A key is the name of a variable in an array ($array["key"]) and the index is the position it's at ($array = ["key" => 0], the index would be 0).
Keys and indices are the same if the array is not associative though ($array = [true], the key holding the value true is named 0 and is at index 0).
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Difference between the delete key an the back space?
The backspace key deletes to the left of the cursor, and the delete key deletes to the right of the cursor.
What is the difference between session key and master key?
A session key is a temporary encryption keyused between two principals.A master key is a long-lasting key that isused between a key distribution centre and aprincipal for the purpose of encoding thetransmission of session keys.Typically, the master keys are distributed bynoncryptographic means.
What is the difference between WEP64 and WEP128?
WEP64 uses a 64-bit encryption key, and WEP128 uses a 128-bit key.
What difference between print screen key and print command?
print screen key takes almost a picture of what is currenly on your compuer screen
What is the difference between a G-sharp minor and a G-flat minor key signature?
The key of G-sharp minor has 5 sharps (it's the relative to B major). G-flat minor is a key that only exists in theory, because that key signature would contain 9 flats. The limit on flats or sharps in a key is 7.
