+mynum+ 两边的+是干嘛的？

Answer 1

+mynum+ What is the + on both sides for? -PHP Chinese website Q&A-+mynum+ What is the + on both sides for? -PHP Chinese website Q&A

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Answer 2

“+”不只代表加法，还可以连接两个字符串。这里代表连接前后的两个字符串。