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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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