php汉字字符串长度和截取

2020-01-10 21:57:26
  1. mb_strlen("你好123",'utf-8');//返回5

  2. strlen("你好");//返回几我也不知道,肯定不是2,但你想要2就用上面的

  3. substr("你好啊",0,1);//返回的是乱码因为你取了一个汉字的一部分

  4. mb_substr("你好啊",0,1,"utf-8");//返回 '你'


第一个阿拉伯数字为-1,就是从末尾来算。

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