email-validation

问题 I have seen on some sites where the user can simply send a blank e-mail to something like verify@domain.com to have their e-mail verified if they are having trouble getting the verification e-mail. I have a website with PHP/MySQL that I'd like to implement this same functionality, but I haven't done much with e-mail besides sending it so I don't even know where to start to set something like this up. 回答1: Basically if your mailbox is an IMAP you could reference these functions via PHP http:/

问题 I have been asked to implement some email address validation on a web app - I'm sure we've all been there a thousand times... however, this time I have been asked to do an MX Lookup on the domain to see if it accepts emails. Does anyone know of any potential problems with doing this? Is an mx lookup a reliable way of finding out if a domain accepts email? are there any edge cases where a valid email address could fail an MX lookup check? Thanks for your advice! 回答1: are there any edge cases

问题 This question already has answers here : Closed 9 years ago . Possible Duplicates: PHP email validation function Is there a php library for email address validation? I have a contact form on my site but I need a e-mail validation and I don't know how to do it. 回答1: $email = "someone@example.com"; if(!filter_var($email, FILTER_VALIDATE_EMAIL)) { echo "E-mail is not valid"; } else { echo "E-mail is valid"; } This is probably the simplest method. The example I pasted above is from http://www

问题 After a quick research on the Stackoverflow, I wasn't able to find any solution for the multiple email validation using regex (split JS function is not applicable, but some reason back-end of the application waits for a string with emails separated by ; ). Here are the requirements: Emails should be validated using the following rule: [A-Za-z0-9\._%-]+@[A-Za-z0-9\.-]+\.[A-Za-z]{2,4} Regex should accept ; sign as a separator Emails can be written on multiple lines, finishing with ; Regex may

问题 I am trying to "intelligently" pre-fill a form, I want to prefill the firstname and lastname inputs based on a user email address, so for example, jon.doe@email.com RETURNS Jon Doe jon_doe@email.com RETURN Jon Doe jon-doe@email.com RETURNS Jon Doe I have managed to get the string before the @ , var email = letters.substr(0, letters.indexOf('@')); But cant work out how to split() when the separator can be multiple values, I can do this, email.split("_") but how can I split on other email

问题 I am trying to "intelligently" pre-fill a form, I want to prefill the firstname and lastname inputs based on a user email address, so for example, jon.doe@email.com RETURNS Jon Doe jon_doe@email.com RETURN Jon Doe jon-doe@email.com RETURNS Jon Doe I have managed to get the string before the @ , var email = letters.substr(0, letters.indexOf('@')); But cant work out how to split() when the separator can be multiple values, I can do this, email.split("_") but how can I split on other email

问题 How can I check for duplicate email addresses in PHP , with the possibility of Gmail's automated labeler and punctuation in mind? For example, I want these addressed to be detected as duplicates: username@gmail.com user.name@gmail.com username+label@gmail.com user.name+label@gmail.com Despite what Daniel A. White claims: In Gmail, dots at random places before the '@' (and label) can be placed as much as you like. user.name@gmail.com and username@gmail.com are in fact the same user. 回答1:

问题 Can someone show me a sample RegEx for an email address and how to use in in Objective-C? Looking for something that fits: name@place.something 回答1: As featured on: http://github.com/benofsky/DHValidation - (BOOL) validateEmail: (NSString *) candidate { NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTest evaluateWithObject:candidate]; } Or add the http:/

问题 I'm trying to make a Bash script to check if an email address is correct. I have this regular expression: [a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])? Source: http://www.regular-expressions.info/email.html And this is my bash script: regex=[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])? i="test@terra.es" if [[ $i=~$regex

问题 I would like a regular expression that will extract email addresses from a String (using Java regular expressions). That really works. 回答1: Here's the regular expression that really works. I've spent an hour surfing on the web and testing different approaches, and most of them didn't work although Google top-ranked those pages. I want to share with you a working regular expression: [_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,}) Here's the original link: