Is it possible to input a character and get the unicode value back? for example, i can put ⽇ in html to output "⽇", is it possible to give that character as an argument to a function and get the number as an output without building a unicode table?Is it possible to input a character and get the
阅读背景：
我能得到一个字符的unicode值，或者用php来表示相反的值吗?
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