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This article mainly introduces the relevant knowledge of "how php acquires only Chinese characters". The editor shows you the operation process through an actual case. The operation method is simple, fast and practical. I hope this article "how to obtain only Chinese characters by php" can help you solve the problem.

In php, you can use preg_match_all () to filter strings with regular expressions to get only Chinese characters; syntax "preg_match_all (" / [\ x {4e00} -\ x {9fff}] + / u "," $str ", $arr), which stores matching characters in the" $arr "array.

Operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In php, you can use the preg_match_all () function to get only Chinese characters.

The preg_match_all () function searches for all the results in the string that match the regular expression.

The preg_match_all () function with the regular expression "/ [\ x {4e00} -\ x {9fff}] + / u" can filter strings to get only Chinese characters.

The matching Chinese characters are stored in an array one by one (specified by the third parameter).

You can then use the join () function to concatenate the resulting value into a string.

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