Php - regular expression to check if the string has chinese chars

Question

I have the string $str and I want to check if it`s content has Chinese chars or not (true/false)

$str = "赕就可消垻,只有当所有方块都被消垻时才可以过关";

can you please help me?

Thanks! Adrian

What character set is this in? UTF-8 or one of the local ones? — Pekka, Feb 07 '11 at 15:55
possible duplicate of [Detect chinese (multibyte) character in the string](http://stackoverflow.com/questions/1550950/detect-chinese-multibyte-character-in-the-string) — Pekka, Feb 07 '11 at 15:59
Check if the text simply contains some Chinese characters (with other non-Chinese characters)? or is comprised entirely of Chinese characters? — Mark Baker, Feb 07 '11 at 16:02
@Mark Baker the string can be Chinese with English for example — Adrian, Feb 07 '11 at 16:10
In that case, use mario's solution, and don't forget to accept his answer — Mark Baker, Feb 07 '11 at 16:23

mario · Accepted Answer · 2011-02-07T16:06:37.263

70

You could use a unicode character class http://www.regular-expressions.info/unicode.html

preg_match("/\p{Han}+/u", $utf8_str);

This just checks for the presence of at least one chinese character. You might want to expand on this if you want to match the complete string.

edited Feb 07 '11 at 16:06

answered Feb 07 '11 at 15:59

mario

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Great answer. Didn't know you could identify unicode via regex! – Peter Feb 07 '11 at 16:01
@Peter: It's a bit recent. Depends on the version, but a Unicode-compatible `PCRE_VERSION` should be bundled since PHP4. – mario Feb 07 '11 at 16:03
IIRC, this also depends on the PCRE library on the server having Unicode handling enabled. But it should be present on most modern servers. – Pekka Feb 07 '11 at 16:49
@Pekka: Ah nice, instant upgrade!, it's indeed a shared library. (Probably depends on the build parameters. PHP 5.3.3 still bundles an outdated libpcre version 7.8 from 2008.) – mario Feb 07 '11 at 16:57
This answer is terrific. Chapeau. – Jamie Hollern Sep 19 '17 at 09:37
Tried it with this string and it doesn't catch it: 人中之龍,Yakuza 3,SEGA,PS4,重製版,《人中之龍 3》PS4 重製版釋出全新預告及遊戲截圖,影音相關,Game LIFE 遊戲情報 At least some of these characters appear to be Chinese according to the online dictionaries – alimack Aug 24 '18 at 10:43

score 3 · Answer 2 · edited Aug 30 '14 at 13:22

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@mario answer is right!

For Chinese chars use this regex: /[\x{4e00}-\x{9fa5}]+/u

And Don't forget the u modifier!!!

About u modifier reference

TKS to mario

edited Aug 30 '14 at 13:22

Darshan Lila

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answered Aug 30 '14 at 12:57

eaglewu

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Newton Singh · Answer 3 · 2019-01-15T06:43:42.840

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preg_match("/^\p{Han}{2,10}+$/u", $str);

Use /^\p{Han}{2,10}+$/u regex which allows Chinese character only.

It allows chinese character only &
It allows Minimum 2 character &
It allows maximum 10 character

You can change minimum and maximum character by changing {2,10} as per your need.

\p & /u are very important to add please don't avoid to add it.

edited Jan 15 '19 at 06:43

answered Nov 22 '17 at 06:59

Newton Singh

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score 1 · Answer 4 · edited May 23 '17 at 12:34

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This link to a previous question on identifying simplified or traditional Chinese might give you some ideas... you don't actually specify which you mean, and I don't know Chinese well enough to recognise the difference

edited May 23 '17 at 12:34

Community

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answered Feb 07 '11 at 16:04

Mark Baker

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Hey, this is a great idea and has less dependencies than an Unicode Regex. +1 – Pekka Feb 07 '11 at 16:49
@Pekka - I have to confess, I was surprised it actually worked (even if it did need a bit of help from bobince with the actual charsets).... just one of those theories that I'd never had a chance to try in practise. – Mark Baker Feb 07 '11 at 16:54

Php - regular expression to check if the string has chinese chars

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