Email-Adresse auf Gültigkeit prüfen?

adolpho · 3. Dezember 2010

Hallo,

ich bin gerade beim Video-Workshop 96 - anwendung-is-mail.

Frage: Wie kann ich die Email-Adresse vor dem Absenden auf Gültigkeit prüfen?

:wink: Lg. Adolpho

Sören · 3. Dezember 2010

Ich kenne 2 Möglichkeiten:

Entweder mit Filtern (FILTER_VALIDATE_ EMAIL)
Oder mit regulären Ausdrücken. Eine Lösung: http://regexp-evaluator.de/tut…ail-adressen-extrahieren/

Wobei die erstere Methode einfacher und kürzer ist.

Es gibt aber bestimmt auch noch andere Möglichkeiteb.

adolpho · 3. Dezember 2010

Sorry,
mein Fehler.
Ich meinte eigentlich, ob es eine Möglichkeit gibt, die Emailadresse vor dem Absenden auf ihre Existenz zu überprüfen.
Lg.
:wink: Adolpho

Sören · 3. Dezember 2010

Nicht das ich wüsste.

maulepan · 5. Dezember 2010

javascipt request!

lauras · 5. Dezember 2010

Ne andere Möglichkeit ist immer, so eine Art Aktivierungsmail zu verschicken. Bevor derjenige nicht auf den Link in der Mail geklickt hat, wird was auch immer du machen willst nicht bestätigt und es kann nichts mehr von der IP-Adresse abgesendet werden..

LG

adolpho · 5. Dezember 2010

Hallo lauras,
anscheinend gibt es doch eine Möglichkeit ein Email auf ihre Existenz zu überprüfen.

Folgenden Code habe ich im Internet gefunden:

PHP

<span class="syntaxdefault"><?php<br />function CheckEmail</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$email</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">{</span><span class="syntaxdefault">    list</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$user</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> $domain</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> split</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"@"</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> $email</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 2</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">    getmxrr</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$domain</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> $mxlist</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">     $return </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> array</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">false</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"No email."</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">     foreach</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$mxlist as $mx</span><span class="syntaxkeyword">)<br /></span><span class="syntaxdefault">     </span><span class="syntaxkeyword">{<br /></span><span class="syntaxdefault">       $fp </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> fsockopen</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$mx</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 25</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> $errno</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> $errstr</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 20</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">     if</span><span class="syntaxkeyword">(!</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> continue</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">     socket_set_blocking</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> false</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">      $s </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> 0</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">      $c </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> 0</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">      $out </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxstring">""</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">      do </span><span class="syntaxkeyword">{<br /></span><span class="syntaxdefault">        $out </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> fgets</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 2500</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">      if</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">ereg</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"^220"</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> $out</span><span class="syntaxkeyword">))</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">{<br /></span><span class="syntaxdefault">        $s </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> 0</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">        $out </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> </span><span class="syntaxstring">""</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">        $c</span><span class="syntaxkeyword">++;<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">}</span><span class="syntaxdefault"> else<br />        </span><span class="syntaxkeyword">{<br /></span><span class="syntaxdefault">          if</span><span class="syntaxkeyword">((</span><span class="syntaxdefault">$c</span><span class="syntaxkeyword">></span><span class="syntaxdefault">0</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">&&</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$out</span><span class="syntaxkeyword">==</span><span class="syntaxstring">""</span><span class="syntaxkeyword">))</span><span class="syntaxdefault"> break</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">           else $s</span><span class="syntaxkeyword">++;<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">        if</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$s</span><span class="syntaxkeyword">==</span><span class="syntaxdefault">9999</span><span class="syntaxkeyword">)</span><span class="syntaxdefault"> break</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">        while</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$out</span><span class="syntaxkeyword">==</span><span class="syntaxstring">""</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        socket_set_blocking</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> true</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        fputs</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"HELO\n"</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        $out </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> fgets</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 3000</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        fputs</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"MAIL FROM: user@news-user.com\n"</span><span class="syntaxdefault"> </span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        $out </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> fgets</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 3000</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        fputs</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"RCPT TO: $email\n"</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        $out </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> fgets</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> 3000</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        if</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">ereg</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"^250"</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> $out</span><span class="syntaxkeyword">))<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">{<br /></span><span class="syntaxdefault">          $return </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> array</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">true</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">$out</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">}</span><span class="syntaxdefault"> else<br />        </span><span class="syntaxkeyword">{<br /></span><span class="syntaxdefault">          $return </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> array</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">false</span><span class="syntaxkeyword">,</span><span class="syntaxdefault">$out</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">        fputs</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">,</span><span class="syntaxdefault"> </span><span class="syntaxstring">"quit\n"</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        fclose</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$fp</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        if</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$return</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">])</span><span class="syntaxdefault"> break</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">        return $return</span><span class="syntaxkeyword">;<br /></span><span class="syntaxdefault">        </span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">        $ret </span><span class="syntaxkeyword">=</span><span class="syntaxdefault"> CheckEMail</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"user@news-user.com"</span><span class="syntaxkeyword">);<br /></span><span class="syntaxdefault">        echo</span><span class="syntaxkeyword">(</span><span class="syntaxdefault">$ret</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">0</span><span class="syntaxkeyword">].</span><span class="syntaxstring">" "</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">$ret</span><span class="syntaxkeyword">[</span><span class="syntaxdefault">1</span><span class="syntaxkeyword">]);<br /><br /></span><span class="syntaxdefault">?></span>

Dieser Code ist in Arbeit.

Lg.
:wink: adolpho

feinshdens · 7. Dezember 2010

adolpho

coole sache!
funktionierts?

Gruß
peter

Sören · 7. Dezember 2010

Probiers aus

Also es fehlt schonmal ein Anführungszeichen:

PHP

<span class="syntaxdefault"><br />$ret </span><span class="syntaxkeyword">= </span><span class="syntaxdefault">CheckEMail</span><span class="syntaxkeyword">(</span><span class="syntaxstring">"user@news-user.com);<br /></span>

(Ganz am Ende, danach ist alles rot)

Email-Adresse auf Gültigkeit prüfen?

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