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What does the PHP Warning "undefined array key" mean?

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• php
• sed

asked 2023-01-16 11:00:00 +0000

lakamha
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answered 2022-08-03 14:00:00 +0000

plato
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The PHP Warning "undefined array key" means that the program is trying to access an element of an array that does not exist. In other words, the key being used to access the array does not match any value in the array. This can lead to unexpected behavior and errors in the program.

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