如何在PHP中替换字符串中的非ASCII字符？ [英] How to replace non-ASCII characters in a string in PHP?

问题描述

我的字符串是这样的

  $ inputText =centralkøkkenetkliniskediætister; 
  

在那个字符串中有像ø和æ即可。这些字符应该被替换。如何在一个正则表达式中提及这些可用于替换的正则表达式？如果您要替换除字母数字以外的其他所有字符然后试试它。

  [^ a-zA-Z0-9] 
  

以下是演示 a>

示例代码：

  $ re =/ ^ a-zA-Z0-9] /; 
 $ str =centralkøkkenetkliniskediætister; 
 $ subst =''; 
 
 $ result = preg_replace（$ re，$ subst，$ str）; 
  

---

更好地使用 [^ \ w \s] 或 [\W\S] ，使其简短，如@ hjpotter92所示。

模式解释：

  [^ \ w \\ \\ s]除以下字符外的任何字符：
（az，AZ，0-9，_），空格（\ n，\ r，\ t，\f和）
 
 [\W\S]任何字符：
非单词字符（除az，AZ，0-9，_之外的所有字符），
非空白字符\\\
，\r，\t，\f和）
  

I need to replace characters in a string which are not represented with a single byte.

My string is like this

$inputText="centralkøkkenet kliniske diætister"; 

In that string there are characters like ø and æ. These characters should be replaced. How do I mention these in a regular expression that I can use for replacement?

解决方案

If you want to replace everything other than alphanumeric and space character then try it.

[^a-zA-Z0-9 ]

Here is demo

Sample code:

$re = "/[^a-zA-Z0-9 ]/";
$str = "centralkøkkenet kliniske diætister";
$subst = '';

$result = preg_replace($re, $subst, $str);

---

Better use [^\w\s] or [\W\S] to make it short and simple as suggested by @hjpotter92 as well in comments.

Pattern explanation:

[^\w\s]                any character except: word characters:
                        (a-z, A-Z, 0-9, _), whitespace (\n, \r, \t,\f, and " ")

[\W\S]                 any character of: 
                         non-word characters (all but a-z, A-Z, 0-9, _), 
                         non-whitespace (all but \n, \r, \t, \f, and " ")

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