php - Match alpha letters and accented alpha letters -



php - Match alpha letters and accented alpha letters -

i'm looking regex code pattern:

must contain @ to the lowest degree 1 of next , match whole string.

can contain alpha letters (a-z a-z) ...

and accented alpha letters (á ä à etc).

i'm using preg_match('/^([\p{l}]*)$/iu', $input), \p{l} matches unicode letters, including chinese. want allow english language alphabet letters accented variants of them.

so johndoe, fübar, lòrem, fírstnäme, Çákë valid inputs, because contain @ to the lowest degree 1 alpha letter and/or accented alpha letters, , whole string matches.

i suggest compact regex:

(?i)(?:(?![×Þß÷þø])[a-zÀ-ÿ])+

see demo.

this regex takes advantage of fact accented letters want seem live in unicode character range À ÿ (see table), add together character class. the À-ÿ has few unwanted characters. unlike engines, pcre (php's regex engine) not back upwards character class subtraction, mimic negative lookahead (?![×Þß÷þø]) be aware characters such à can expressed several unicode code points (the à grapheme, or a grave accent). match non-combined graphemes. catching variations hard.

in code:

$regex = "~(?i)(?:(?![×Þß÷þø])[a-zÀ-ÿ])+~u"; $hit = preg_match($regex,$subject,$match);

php regex unicode

Comments

Post a Comment

Popular posts from this blog

ruby on rails - Devise Logout Error in RoR -

ruby on rails - Devise Logout Error in RoR - while using devise in ror, encountering unusual error when trying log out url different root url. displays me : actioncontroller::invalidauthenticitytoken in devise::sessionscontroller#destroy" for illustration if rooting path after log in '/structure', , seek log out '/general' error, while logging out '/structure' fine. any help highly appreciated. ruby-on-rails ruby devise
Read more

c# - Create a Notification Object (Email or Page) At Run Time -- Dependency Injection or Factory -

c# - Create a Notification Object (Email or Page) At Run Time -- Dependency Injection or Factory - i have code emails me notification when happens. trying add together page , also remove dependency on email. for reference; have name of notification want send stored string in database. @ runtime have list of people , string representation of want receive. i thought dependency injection ninject, kernel bindings got big , seemed hacking together. then thought simple factory, activator.createinstance(email/page) inotifcation, don't know how handle differing constructor parameters (unless utilize common, complex property, employee, has info need). so far have this: public interface inotification { void sendmessage(); } public class email: inotification { private readonly string _toemailaddress; private string body { { homecoming "email"; } } private static string smtphost { ...
Read more

model view controller - MVC Rails Planning -

model view controller - MVC Rails Planning - i'm starting rails , i'm building app stores films info, user can watch film , give grade on web application. i have coded cinema model, controller , views. now, have 2 questions: should need create model , controller grading? in case, should create or should wait , create first users model , controller? yes, on model , controller grades. that'd feasible way maintain track of who's graded what. it's create first, i'd start users, since grades depend on both films , users. ruby-on-rails model-view-controller
Read more