How to remove non-Chinese characters in php

php method to remove non-Chinese characters: first create a PHP sample file; then use the fgets() function to extract each line of data from the txt file; finally use the regular function preg_replace() to remove non-Chinese characters in each line. Can.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to remove non-Chinese characters in php?

php function preg_replace() regular removal of non-Chinese characters

The method of removing non-Chinese characters needs to be used in the project, and the organized data

$file = fopen("hb/j.txt","r+") or exit("Unable to open file!");
while(!feof($file)){
$line=fgets($file);
$pattern = "/[^\x{4E00}-\x{9FFF}]+/u";
echo preg_replace($pattern, '', $line);
echo "<br />";
}
fclose($file);

is taken out from the txt file Each line, and remove non-Chinese characters in each line.

1. Take out a line and use the fgets() function

2. Remove non-Chinese characters using the regular function preg_replace()

3. Regular rules for non-Chinese characters /[^\x{ 4E00}-\x{9FFF}] / , please note that in php, \u**** cannot be used to represent unicode characters, and \x{****}

4.u must be used to represent the modifier

Recommended learning: "PHP Video Tutorial"

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