Job Recruitment Website - Zhaopincom - Why does PHP always judge unsuccessful? Is it the comparison operator or the IF statement?
Why does PHP always judge unsuccessful? Is it the comparison operator or the IF statement?
How can I judge incorrectly? Can you give me an example?
Seeing that the symbol "= =" is used in your program, you can consider whether it is "= =". Because php also has an "= =" operator. Generally, the operator "= =" can be considered to determine whether it is empty.
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