title: php multi variable with more variables as string
body: <p>Im trying to create a multi variable with other variables.<br/>
  The problem i can´t use an array, because i would send the content over mail and there is allowed only strings.<br/>
  The code (cant find the error):</p>
  
  <pre><code>$mailtext  = "Name".$name.$trenner."\n" 
                .= "Straße".$strase.$trenner."\n" 
                .= "Postleitzahl".$plz.$trenner."\n"
                .= "Ort".$ort.$trenner."\n"
                .= "Telefon".$telefon.$trenner."\n"
                .= "Mehrwertsteuer".$mwst.$trenner."\n"
                .= "IVA".$iva.$trenner."\n"
                .= "Produkt".$produkt.$trenner."\n"
                .= "Anmerkung".$text.$trenner."\n";
  </code></pre>