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Email Validator

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Submitted on: 10/1/2002 2:07:03 AM
By: Bhushan.  
Level: Beginner
User Rating: Unrated
Compatibility:PHP 3.0

Users have accessed this code 7066 times.
 

(About the author)
 
     Email Validator check to see if an email address is in the proper format or not.
 
code:
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Terms of Agreement:   
By using this code, you agree to the following terms...   
1) You may use this code in your own programs (and may compile it into a program and distribute it in compiled format for languages that allow it) freely and with no charge.   
2) You MAY NOT redistribute this code (for example to a web site) without written permission from the original author. Failure to do so is a violation of copyright laws.   
3) You may link to this code from another website, but ONLY if it is not wrapped in a frame. 
4) You will abide by any additional copyright restrictions which the author may have placed in the code or code's description.

    //**************************************
    //     
    // Name: Email Validator
    // Description:Email Validator check to 
    //     see if an email address is in the proper
    //     format or not.
    // By: Bhushan.
    //
    //This code is copyrighted and has    // limited warranties.Please see http://
    //     www.Planet-Source-Code.com/vb/scripts/Sh
    //     owCode.asp?txtCodeId=758&lngWId;=8    //for details.    //**************************************
    //     
    
    <?php
    function emailsyntax_is_valid($email) {
    list($local, $domain) = explode("@", $email);
    $pattern_local = '^([0-9a-z]*([-|_]?[0-9a-z]+)*)(([-|_]?)\.([-|_]?)[0-9a-z]*([-|_]?[0-9a-z]+)+)*([-|_]?)$';
    $pattern_domain = '^([0-9a-z]+([-]?[0-9a-z]+)*)(([-]?)\.([-]?)[0-9a-z]*([-]?[0-9a-z]+)+)*\.[a-z]{2,4}$';
    $match_local = eregi($pattern_local, $local);
    $match_domain = eregi($pattern_domain, $domain);
    if ($match_local && $match_domain) {
    return 1;
    } else {
    return 0;
    }
    }
    ?>
    Use the function like this :
    if (emailsyntax_is_valid($email)) {
    echo "Ok";
    } else {
    echo "Error";
    }


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Other User Comments
10/4/2002 2:59:47 PM:Dracarys
Well, you could make it connect to the 
SMTP server of the user and make a VRFY 
command. That would be better, becaue 
it would not only check, whether it is 
correct, but too, if it exists. :D
Keep the Planet clean! If this comment was disrespectful, please report it:
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1/26/2003 4:41:51 PM:
email2
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