Comments on snippet: 'Check for valid email address'

Jotape said on 8/31/11

Wed, 31 Aug 2011 09:51:16 GMT

http://www.snipplr.com/view/58338/validate-email-and-domain/

MikeNGarrett said on 2/18/11

Fri, 18 Feb 2011 06:18:20 GMT

filter_var($email, FILTER_VALIDATE_EMAIL); This either returns the email or false.

asdasDan said on 1/5/11

Wed, 05 Jan 2011 16:47:39 GMT

As many have noted, using custom regular expressions isn't necessary when filter_var options are available. +1 to housecor as well.

alyssonweb said on 12/16/10

Thu, 16 Dec 2010 09:24:42 GMT

http://snipplr.com/view/45716/check-for-valid-email-address-rfc/

alyssonweb said on 12/14/10

Tue, 14 Dec 2010 20:00:28 GMT

there is no reason to use if/else statement you can simply return preg_match(); http://snipplr.com/view/45702/check-for-valid-email-address-rfc/

Scriptor said on 12/14/10

Tue, 14 Dec 2010 14:03:16 GMT

@NaRzY - that code is nearly 3 years old.

NaRzY said on 11/4/10

Thu, 04 Nov 2010 15:27:40 GMT

if(!filter_var($email, FILTER_VALIDATE_EMAIL)) { // Error message here }

NaRzY said on 11/4/10

Thu, 04 Nov 2010 15:26:04 GMT

Way too much of an overkill. You should be using PHP's filter_var. Example below:

housecor said on 10/26/10

Tue, 26 Oct 2010 13:45:35 GMT

The code is unnecessarily verbose. There's no need to explicitly return true/false with an if/else. This body will suffice: return (preg_match("/[a-zA-Z0-9_-.+]+@[a-zA-Z0-9-]+.[a-zA-Z]+/", $email) > 0);

Calvista said on 9/16/10

Thu, 16 Sep 2010 16:10:01 GMT

+1 for @jfherring

jfherring said on 6/19/10

Sat, 19 Jun 2010 09:17:35 GMT

http://www.snipplr.com/view/10897/valid-email-address-filter/

darksider said on 4/30/10

Fri, 30 Apr 2010 20:45:35 GMT

apart from the little typos/errors noted by the others, this is a great snippet. Short, Sweet, and very useful. thanks and good work, dude - keep it up!! -darksider-

Masis said on 2/9/10

Tue, 09 Feb 2010 10:44:48 GMT

You can try the next: function check_email_address($email) { // First, we check that there's one @ symbol, // and that the lengths are right. if (!ereg("^[^@]{1,64}@[^@]{1,255}$", $email)) { // Email invalid because wrong number of characters // in one section or wrong number of @ symbols. return false; } // Split it into sections to make life easier $email_array = explode("@", $email); $local_array = explode(".", $email_array[0]); for ($i = 0; $i < sizeof($local_array); $i++) { if (!ereg("^(([A-Za-z0-9!#$%&'*+/=?^_`{|}~-][A-Za-z0-9!#$%& ↪'*+/=?^_`{|}~\.-]{0,63})|(\"[^(\\|\")]{0,62}\"))$", $local_array[$i])) { return false; } } // Check if domain is IP. If not, // it should be valid domain name if (!ereg("^\[?[0-9\.]+\]?$", $email_array[1])) { $domain_array = explode(".", $email_array[1]); if (sizeof($domain_array) < 2) { return false; // Not enough parts to domain } for ($i = 0; $i < sizeof($domain_array); $i++) { if (!ereg("^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])| ↪([A-Za-z0-9]+))$", $domain_array[$i])) { return false; } } } return true; } Also you can search for demo email php form and look a right code

ginoplusio said on 12/27/09

Sun, 27 Dec 2009 06:09:12 GMT

Here is another SMTP mail validation function in php: http://snipplr.com/view/25505/validate-emails-with-smtp-and-php/

hm2k said on 12/21/09

Mon, 21 Dec 2009 08:31:58 GMT

Try this: [validemail.org](http://validemail.org/ "validemail")

svenito said on 9/30/09

Wed, 30 Sep 2009 07:56:04 GMT

Simplified reg ex for this: /\S+@\S+\.\D+/

bucabay said on 9/3/09

Thu, 03 Sep 2009 09:52:45 GMT

The correct link: To check whether an email address actually exists on the mailserver, use the [PHP SMTP Email Validation][1] class. [1]: http://code.google.com/p/php-smtp-email-validation/ "PHP SMTP Email Validation"

bucabay said on 9/3/09

Thu, 03 Sep 2009 09:51:56 GMT

To check whether an email address actually exists on the mailserver, use the [PHP SMTP Email Validation][1] class. [1] http://code.google.com/p/php-smtp-email-validation/ "PHP SMTP Email Validation"

Unreal said on 2/28/09

Sat, 28 Feb 2009 18:55:54 GMT

From w3schools - http://www.w3schools.com/php/filter_validate_email.asp

dominicsayers said on 2/26/09

Thu, 26 Feb 2009 12:05:21 GMT

http://snipplr.com/view/11616/rfccompliant-email-address-validator/ And check out a head-to-head of free validators here: http://www.dominicsayers.com/isemail/

koncept said on 10/5/08

Sun, 05 Oct 2008 00:56:42 GMT

http://snipplr.com/view/8844/rfc822-compliant-email-address-validator/

liorsp0 said on 4/15/08

Tue, 15 Apr 2008 08:44:14 GMT

g0dbrz said on 3/5/08

Wed, 05 Mar 2008 09:15:22 GMT

guidorossi said on 1/11/08

Fri, 11 Jan 2008 22:06:44 GMT

Simplest way. PHP5 only

http://www.w3schools.com/php/filtervalidateemail.asp

gdonald said on 1/12/07

Fri, 12 Jan 2007 12:54:48 GMT

Doesn't seem to allow PHP tags. Here's another try on those sample scripts:

Here are my sample scripts:

email_bad.php:

errorreporting( EALL );

function isvalidemail( $email ) { if( pregmatch( "/[a-zA-Z0-9-.+]+@[a-zA-Z0-9-]+.[a-zA-Z]+/", $email ) > 0 ) return true; else return false; }

$emails = array( 'br0k3n', 'fred_dred@aol.com', 'fred-dred@aol.com', 'fred.dred@aol.com', 'fred+dred@aol.com' );

foreach( $emails as $email ) { echo $email . ' is' . ( isvalidemail( $email ) ? '' : ' not' ) . " valid\n"; }

email_fixed.php:

errorreporting( EALL );

function isvalidemail( $email ) { return pregmatch( '/[.+a-zA-Z0-9-]+@[a-zA-Z0-9-]+.[a-zA-Z]+/', $email ); }

$emails = array( 'br0k3n', 'fred_dred@aol.com', 'fred-dred@aol.com', 'fred.dred@aol.com', 'fred+dred@aol.com' );

foreach( $emails as $email ) { echo $email . ' is' . ( isvalidemail( $email ) ? '' : ' not' ) . " valid\n"; }

gdonald said on 1/12/07

Fri, 12 Jan 2007 12:53:09 GMT

The regular expression

[a-zA-Z0-9_-.+]+@[a-zA-Z0-9-]+.[a-zA-Z]+

does not compile.

When a dash is used in a character class it indicates a range.

_-. is not a valid range.

A corrected version could be

[.+a-zA-Z0-9_-]+@[a-zA-Z0-9-]+.[a-zA-Z]+

[-a-zA-Z0-9_.+]+@[a-zA-Z0-9-]+.[a-zA-Z]+

When the dash is moved to the beginning or end of the character class it is automatically not part of a range and instead does a literal match on the dash character.

Here are my sample scripts:

email_bad.php: !/usr/bin/php

email_fixed.php: !/usr/bin/php