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What's the difference between if(!$variable) and if(isset($variable))?

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一个人的身影
一个人的身影 2020-12-06 11:16

What is the difference between if(!$variable) and if(isset($variable))?

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  • 醉梦人生
    醉梦人生 (楼主)
    2020-12-06 12:00

    They are two different statements

    1. in the first you check if a variable is false hence the '!'
    2. here you check if a variable is actually set to some value other then null.

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