On 28 June 2010 15:42, gmail <agbotsu@xxxxxxxxx> wrote: > Hello to you all! > > I'm facing a problem with a scrip that can validate a form witch accept only > as input email address. > > I have seen many scripts on the net and were very interesting but I'm not > able to implement those scripts on my need. > > I'm explaining myself better! > > I have a form to collect a User Input Email address, > > After a script to check the syntax of the user email is correct. > > Then check the mx record if really exist. > > At the end if the user input (email) meets all my requirements the pass it > (store) in a DB. > > Please I'll be grateful to all your possible solutions > > Thanks. > > > > How much detail do you want? Validating email addresses goes from the mundane to the extreme. The rules on the EXACT format of an email address are significant. Reading http://en.wikipedia.org/wiki/E-mail_address#RFC_specification will give you a lot of detail. There are MANY regular expressions available, again, covering some aspects of a "valid" email address. Some cover more than others. http://www.regular-expressions.info/email.html has a good explanation regarding email address validation using regular expressions (and is part of the RegexBuddy documentation). Note the last line ... "So even when following official standards, there are still trade-offs to be made. Don't blindly copy regular expressions from online libraries or discussion forums. Always test them on your own data and with your own applications." As for the MX part, PHP has the getmxrr() function for this task - http://docs.php.net/manual/en/function.getmxrr.php There are also a lot of user notes covering email address validation. Richard. -- ----- Richard Quadling "Standing on the shoulders of some very clever giants!" EE : http://www.experts-exchange.com/M_248814.html EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 ZOPA : http://uk.zopa.com/member/RQuadling -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
