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Why does php strpos not found and need to use ===false to make a judgment?
- 巴扎黑Original
- 2016-11-10 13:21:592161browse
If the corresponding substring is not found in this string, it will return false
If this substring is located at the beginning of the string, it will return 0
In order to distinguish 0 and false, you must use the equality operator === Or! ==
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