如何比较和输出拉丁字符？

问题描述

我有一个国家/地区数组，其中有一个拉丁字符Å：

  $ country [af] =阿富汗; 
 $ country [ax] =ÅlandIslands; 
 $ country [al] =阿尔巴尼亚; 
  

在循环访问此数组并执行国家/地区名称的第一个字符比较时，拉丁字符。

  foreach（$ country as $ cc => $ name）
 {
 if（$ name [0] ==Å）
 {
 echomatched; 
} 
 else 
 {
 echo $ name [0]; 
} 
} 
  

我得到的结果是：A A

为什么拉丁字符成为 ，如何进行正确的比较并输出拉丁字符？

添加注意：http头和html文档已经被指定为UTF-8格式。

添加注释2：如果我只是回显 $ name 而不是 $ name [0] ，我可以在Åland群岛获得Å。使用 substr（$ name，0，1）与 $ name [0]

解决方案

将您的脚本更改为此。 unicode编码字不能与正常的字符串函数爆炸。您必须使用多字节函数。

  foreach（$ country as $ cc => $ name）
 {
 if（mb_substr（$ name，0,1，UTF-8）==Å）
 {
 echomatched; 
} 
 else 
 {
 echo mb_substr（$ name，0,1，UTF-8）; 
} 
} 
  

I have an array of countries with one having a Latin character "Å":

$country["af"] = "Afghanistan";
$country["ax"] = "Åland Islands";
$country["al"] = "Albania";

While looping through this array and performing a comparison of the first character of the country name, I cannot match the Latin character.

foreach($country as $cc => $name)
{
 if($name[0] == "Å")
 {
  echo "matched";
 }
 else
 {
  echo $name[0];
 }
}

The result I got is: A�A

Why does the Latin character Å became � and how do I perform a proper comparison and output the Latin character Å?

Add Note: The http header and the html document have already been specified as UTF-8 format.

Add Note2: If I just echo $name instead of $name[0], I am able to get the Å in Åland Islands. Using substr($name, 0, 1) has the same effect as $name[0], which gives me �.

解决方案

Change your script to this. The unicode encoding words cannot explode with normal string functions. You have to use multibyte functions.

foreach($country as $cc => $name)
{
     if(mb_substr($name,0,1,"UTF-8") == "Å")
     {
      echo "matched";
     }
     else
     {
      echo mb_substr($name,0,1,"UTF-8");
     }
}

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