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问个unicode编码的有关问题

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Release： 2016-06-13 12:46:07
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问个unicode编码的问题
js里有个函数String.charCodeAt可以把一个字符串指定位置的字符转换成unicode编码，返回一个数字。现在我想把一个网址例如http://bbs.csdn.net/作为一个字符串整体转换成unicode编码，我想用php的函数实现，请问有类似这个js函数功能的php函数么？在网上找了半天发现都是汉字转unicode编码的，我想要的只是一个英文和符号字符转换的即可！

Related labels：
ascii nbsp php unicode
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