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I was trying to use isset but it said that I have to use !== null instead. Should I use != null or !== null. What is the difference?

Edu Grando
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  • That is the wrong duplicate. For the record, you should use the identical operator (`===` or `!==`) whenever possible. – Yes Barry Jun 04 '19 at 00:15
  • https://stackoverflow.com/questions/1139154/is-there-a-difference-between-and-in-php @EduGrando – Pie Jun 04 '19 at 09:33

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