How to use regular replacement to fix Chinese in PHP

Use PHP's "preg_replace() function combined with regular expressions to replace fixed Chinese strings. The operation method is: 1. Create a PHP sample file; 2. Define a string containing Chinese characters." $string"; 3. Define the regular expression to be replaced "$pattern = '/fixed Chinese/u'"; 4. Use the "preg_replace()" function to replace the matched part with the specified content; 5. echo output The replaced result is enough.

Operating system for this tutorial: Windows 10 system, php8.1.3 version, Dell G3 computer.

Use PHP The preg_replace() function combines regular expressions to replace fixed Chinese strings. Here is an example showing how to use regular expressions to replace fixed Chinese strings:

$string = "这是一段包含中文的字符串，我想将其中的“固定中文”替换为其他内容。固定中文是指不会改变的中文片段。";
$pattern = '/固定中文/u'; // 使用 "/u" 修饰符来匹配 Unicode 字符串
$replacement = "替换后的内容";
result=pregreplace(result = preg_replace(result=pregreplace(pattern, replacement,replacement, replacement,string);
echo $result;

In the above example, we have A string containing Chinese $string. We want to replace the fixed string "fixed Chinese" in it and replace it with other content. We use the /fixed Chinese/u regular expression as the pattern and use the preg_replace() function Replace the matched part with the specified content.

It should be noted that in the regular expression mode, we use the /u modifier to match Unicode strings. This ensures that the regular expression can be correct Process Chinese characters.

By calling the preg_replace() function, passing the regular expression pattern, the content to be replaced and the string to be searched, the function will return the replaced result. In the above example, we store the result In the $result variable, and use echo to output.

You can modify the regular expression pattern and replacement content according to your specific needs to achieve the effect you want.

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