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PHP port of Matt Wrights FormMail.pl WWW form to e-mail gateway

PHP port of Matt Wrights FormMail.pl WWW form to e-mail gateway

<?php 

// parse the form and create the content string which we will send 
function parse_form($array) { 
    // build reserved keyword array 
   $reserved_keys[] =  "require"; 
   $reserved_keys[] =  "email"; 
   $reserved_keys[] =  "recipient"; 
   $reserved_keys[] =  "subject"; 
    // $reserved_keys[] = "subject"; 
   $reserved_keys[] =  "bgcolor"; 
   $reserved_keys[] =  "text_color"; 
   $reserved_keys[] =  "link_color"; 
   $reserved_keys[] =  "vlink_color"; 
   $reserved_keys[] =  "alink_color"; 
   $reserved_keys[] =  "title"; 
   $reserved_keys[] =  "missing_fields_redirect"; 
   $reserved_keys[] =  "env_report"; 
   if (count($array)) { 
      while (list($key, $val) = each($array)) { 
          // exclude reserved keywords 
         $reserved_violation = 0; 
         for ($ri=0; $ri<count($reserved_keys); $ri++) { 
            if ($key == $reserved_keys[$ri]) { 
               $reserved_violation = 1; 
            } 
         } 
          // prepare content 
         if ($reserved_violation != 1) 
            $content .=  "\t$key: $val\n<br>"; 
      } 
   } 
   return $content; 
} 

// mail the content we figure out in the following steps 
function mail_it($content, $subject, $email, $recipient) { 
        mail($recipient, $subject, $content,  "From: $email\r\nReply-To: email\r\nX-Mailer: DT_formmail"); 
} 

// take in the body building arguments and build the body tag for page display 
function build_body($title, $bgcolor, $text_color, $link_color, $vlink_color, $alink_color) { 
   if ($title) 
      echo  "<title>$title</title>"; 
   if (!$bgcolor) 
      $bgcolor =  "#FFFFFF"; 
   if (!$text_color) 
      $text_color =  "#000000"; 
   if (!$link_color) 
      $link_color =  "#0000FF"; 
   if (!$vlink_color) 
      $vlink_color =  "#FF0000"; 
   if (!$alink_color) 
      $alink_color =  "#000088"; 
   if ($background) 
      $background =  "background=\"$background\""; 
   echo 
"<body bgcolor=\"$bgcolor\" text=\"$text_color\" link=\"$link_color\" vlink=\"$vlink_color\" alink=\"$alink_color\" $background>\n\n"; 

} 

// our mighty error function.. 
function print_error($reason,$type = 0) { 
   build_body($title, $bgcolor, $text_color, $link_color, $vlink_color, $alink_color); 
    // for missing required data 
   if ($type ==  "missing") { 
      ?> 
      The form was not submitted for the following reasons:<p> 
     <ul> <? 
     echo $reason. "\n"; 
     ?></ul> 
     Please use your browser's back button to return to the form and try again. <? 
   } else {  // every other error 
      ?> 
      The form was not submitted because of the following reasons:<p> 
       <? 
   } 
   echo  "<br><br>\n"; 
   exit; 
} 

// check for a recipient email address and check the validity of it 
if (!eregi( "^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,3}$", $recipient)) { 
   print_error( "<b>I NEED VALID RECIPIENT EMAIL ADDRESS TO CONTINUE</b>"); 
} 

// handle the required fields 
if ($require) { 
    // seperate at the commas 
   $require = ereg_replace(  " +",  "", $require); 
   $required = split( ",",$require); 
   for ($i=0;$i<count($required);$i++) { 
      $string = trim($required[$i]); 
       // check if they exsist 
      if((!(${$string})) || (!(${$string}))) { 
          // if the missing_fields_redirect option is on: redirect them 
         if ($missing_fields_redirect) { 
            header ( "Location: $missing_fields_redirect"); 
            exit; 
         } 
         $require; 
         $missing_field_list .=  "<b>Missing: $required[$i]</b><br>\n"; 
      } 
   } 
    // send error to our mighty error function 
   if ($missing_field_list) 
      print_error($missing_field_list, "missing"); 
} 

// check the email fields for validity 
if (($email) || ($EMAIL)) { 
   $email = trim($email); 
   if ($EMAIL) 
      $email = trim($EMAIL); 
   if (!eregi( "^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,3}$", $email)) { 
      print_error( "your <b>email address</b> is invalid"); 
   } 
   $EMAIL = $email; 
} 

// check zipcodes for validity 
if (($ZIP_CODE) || ($zip_code)) { 
   $zip_code = trim($zip_code); 
   if ($ZIP_CODE) 
      $zip_code = trim($ZIP_CODE); 
   if (!ereg( "(^[0-9]{5})-([0-9]{4}$)", $zip_code)) { 
      if (!ereg( "(^[0-9]{5})", $zip_code)) { 
         print_error( "your <b>zip code</b> is invalid"); 
      } 
   } 
} 

// check phone for validity 
if (($PHONE_NO) || ($phone_no)) { 
   $phone_no = trim($phone_no); 
   if ($PHONE_NO) 
      $phone_no = trim($PHONE_NO); 
   if (!ereg( "(^(.*)[0-9]{3})(.*)([0-9]{3})(.*)([0-9]{4}$)", $phone_no)) { 
      print_error( "your <b>phone number</b> is invalid"); 
   } 
} 


// check phone for validity 
if (($FAX_NO) || ($fax_no)) { 
   $fax_no = trim($fax_no); 
   if ($FAX_NO) 
      $fax_no = trim($FAX_NO); 
   if (!ereg( "(^(.*)[0-9]{3})(.*)([0-9]{3})(.*)([0-9]{4}$)", $fax_no)) { 
      print_error( "your <b>fax number</b> is invalid"); 
   } 
} 

// prepare the content 
$content = parse_form($HTTP_POST_VARS); 

// if the env_report option is on: get eviromental variables 
if ($env_report) { 
   $env_report = ereg_replace(  " +",  "", $env_report); 
   $env_reports = split( ",",$env_report); 
   $content .=  "------ eviromental variables ------"; 
   for ($i=0;$i<count($env_reports);$i++) { 
      $string = trim($env_reports[$i]); 
      if ($env_reports[$i] ==  "REMOTE_HOST") 
         $content .=  "REMOTE HOST: ".$REMOTE_HOST. "\n"; 
      else if ($env_reports[$i] ==  "REMOTE_USER") 
         $content .=  "REMOTE USER: ". $REMOTE_USER. "\n"; 
      else if ($env_reports[$i] ==  "REMOTE_ADDR") 
         $content .=  "REMOTE ADDR: ". $REMOTE_ADDR. "\n"; 
      else if ($env_reports[$i] ==  "HTTP_USER_AGENT") 
         $content .=  "BROWSER: ". $HTTP_USER_AGENT. "\n"; 
   } 
} 


// if the subject option is not set: set the default 
if (!$subject) 
   $subject =  "Form submission"; 

// send it off 
mail_it($content, $subject, $email, $recipient); 

// if the redirect option is set: redirect them 
if ($redirect) { 
   header ( "Location: $redirect"); 
   exit; 
} else { 
   print  "Thank you for your submission\n"; 
} 

?>
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