dominicsayers / isemail
Checks an email address against the following RFCs: 3696, 1123, 4291, 5321, 5322
Installs: 112 073
Dependents: 3
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Stars: 296
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Forks: 44
Open Issues: 9
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Last update: 2025-03-15 21:15:28 UTC
README
Copyright 2008-2016 Dominic Sayers dominic@sayers.cc
BSD License (https://www.opensource.org/licenses/bsd-license.php)
How to use is_email()
- Add the downloaded file is_email.php to your project
- In your scripts use it like this:
require_once 'is_email.php'; if (is_email($email)) echo "$email is a valid email address";
- If you want to return detailed diagnostic error codes then you can ask is_email to do so. Something like this should work:
require_once 'is_email.php'; $email = 'dominic@sayers.cc'; $result = is_email($email, true, true); if ($result === ISEMAIL_VALID) { echo "$email is a valid email address"; } else if ($result < ISEMAIL_THRESHOLD) { echo "Warning! $email has unusual features (result code $result)"; } else { echo "$email is not a valid email address (result code $result)"; }
- Example scripts are in the extras folder
Version history
Date | Component | Version | Notes |
---|---|---|---|
2016-12-07 | (all) | 3.0.7 | Semantic version numbering |
2016-12-05 | (all) | 3.06 | Changed all http links to https. Updated my links. Updated copyright. Clarified license |
2013-11-29 | tests.xml | 3.05 | Changed Test #71 from ISEMAIL_RFC5321 to ISEMAIL_DEPREC |
2013-11-29 | meta.xml | 3.05 | Changed category of ISEMAIL_RFC5321_IPV6DEPRECATED to ISEMAIL_DEPREC |
2011-07-14 | tests.xml | 3.04 | Changed my link to https://isemail.info |
2011-05-23 | tests.xml | 3.02 | tests.php: Argument no longer passed by reference (deprecated). Test#32: Changed domain to c--n.com because g--a.com no longer has an MX record. |
2010-11-15 | meta.xml | 3.03 | Clarified definition of Valid for numpties |
2010-10-18 | tests.xml | 3.0 | New schema designed to enhance fault identification. |
2010-10-18 | is_email.php | 3.0 | Forensic categorization of email validity |