Script Vcard

Bonjour tout le monde!

j'ai récupéré le script suivant qui permettrait de créer des fichiers au format Vcard. J'ai du mal à saisir le fonctionnement...Qq'un pourrait t-il m'aider à comprendre, mon but étant d'utiliser des données que je récupère dans une bdd pour créer ce fichier Vcard de contact.

MERCI BEAUCOUP!!

CODE :

<?

function encode($string) {
 return escape(quoted_printable_encode($string));
}

function escape($string) {
 return str_replace(";","\;",$string);
}

// taken from PHP documentation comments
function quoted_printable_encode($input, $line_max = 76) {
 $hex = array('0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F');
 $lines = preg_split("/(?:\r\n|\r|\n)/", $input);
 $eol = "\r\n";
 $linebreak = "=0D=0A";
 $escape = "=";
 $output = "";

 for ($j=0;$j<count($lines);$j++) {
  $line = $lines[$j];
  $linlen = strlen($line);
  $newline = "";
  for($i = 0; $i < $linlen; $i++) {
   $c = substr($line, $i, 1);
   $dec = ord($c);
   if ( ($dec == 32) && ($i == ($linlen - 1)) ) { // convert space at eol only
    $c = "=20";
   } elseif ( ($dec == 61) || ($dec < 32 ) || ($dec > 126) ) { // always encode "\t", which is *not* required
    $h2 = floor($dec/16); $h1 = floor($dec%16);
    $c = $escape.$hex["$h2"].$hex["$h1"];
   }
   if ( (strlen($newline) + strlen($c)) >= $line_max ) { // CRLF is not counted
    $output .= $newline.$escape.$eol; // soft line break; " =\r\n" is okay
    $newline = "    ";
   }
   $newline .= $c;
  } // end of for
  $output .= $newline;
  if ($j<count($lines)-1) $output .= $linebreak;
 }
 return trim($output);
}

class vCard {
 var $properties;
 var $filename;
 
 function setPhoneNumber($number, $type="") {
 // type may be PREF | WORK | HOME | VOICE | FAX | MSG | CELL | PAGER | BBS | CAR | MODEM | ISDN | VIDEO or any senseful combination, e.g. "PREF;WORK;VOICE"
  $key = "TEL";
  if ($type!="") $key .= ";".$type;
  $key.= ";ENCODING=QUOTED-PRINTABLE";
  $this->properties[$key] = quoted_printable_encode($number);
 }
 
 // UNTESTED !!!
 function setPhoto($type, $photo) { // $type = "GIF" | "JPEG"
  $this->properties["PHOTO;TYPE=$type;ENCODING=BASE64"] = base64_encode($photo);
 }
 
 function setFormattedName($name) {
  $this->properties["FN"] = quoted_printable_encode($name);
 }
 
 function setName($family="", $first="", $additional="", $prefix="", $suffix="") {
  $this->properties["N"] = "$family;$first;$additional;$prefix;$suffix";
  $this->filename = "$first%20$family.vcf";
  if ($this->properties["FN"]=="") $this->setFormattedName(trim("$prefix $first $additional $family $suffix"));
 }
 
 function setBirthday($date) { // $date format is YYYY-MM-DD
  $this->properties["BDAY"] = $date;
 }
 
 function setAddress($postoffice="", $extended="", $street="", $city="", $region="", $zip="", $country="", $type="HOME;POSTAL") {
 // $type may be DOM | INTL | POSTAL | PARCEL | HOME | WORK or any combination of these: e.g. "WORK;PARCEL;POSTAL"
  $key = "ADR";
  if ($type!="") $key.= ";$type";
  $key.= ";ENCODING=QUOTED-PRINTABLE";
  $this->properties[$key] = encode($name).";".encode($extended).";".encode($street).";".encode($city).";".encode($region).";".encode($zip).";".encode($country);
  
  if ($this->properties["LABEL;$type;ENCODING=QUOTED-PRINTABLE"] == "") {
   //$this->setLabel($postoffice, $extended, $street, $city, $region, $zip, $country, $type);
  }
 }
 
 function setLabel($postoffice="", $extended="", $street="", $city="", $region="", $zip="", $country="", $type="HOME;POSTAL") {
  $label = "";
  if ($postoffice!="") $label.= "$postoffice\r\n";
  if ($extended!="") $label.= "$extended\r\n";
  if ($street!="") $label.= "$street\r\n";
  if ($zip!="") $label.= "$zip ";
  if ($city!="") $label.= "$city\r\n";
  if ($region!="") $label.= "$region\r\n";
  if ($country!="") $country.= "$country\r\n";
  
  $this->properties["LABEL;$type;ENCODING=QUOTED-PRINTABLE"] = quoted_printable_encode($label);
 }
 
 function setEmail($address) {
  $this->properties["EMAIL;INTERNET"] = $address;
 }
 
 function setNote($note) {
  $this->properties["NOTE;ENCODING=QUOTED-PRINTABLE"] = quoted_printable_encode($note);
 }
 
 function setURL($url, $type="") {
 // $type may be WORK | HOME
  $key = "URL";
  if ($type!="") $key.= ";$type";
  $this->properties[$key] = $url;
 }
 
 function getVCard() {
  $text = "BEGIN:VCARD\r\n";
  $text.= "VERSION:2.1\r\n";
  foreach($this->properties as $key => $value) {
   $text.= "$key:$value\r\n";
  }
  $text.= "REV:".date("Y-m-d")."T".date("H:i:s")."Z\r\n";
  $text.= "MAILER:PHP vCard class by Kai Blankenhorn\r\n";
  $text.= "END:VCARD\r\n";
  return $text;
 }
 
 function getFileName() {
  return $this->filename;
 }
}

//  USAGE EXAMPLE

$v = new vCard();

$v->setPhoneNumber("+49 23 456789", "PREF;HOME;VOICE");
$v->setName("Mustermann", "Thomas", "", "Herr");
$v->setBirthday("1960-07-31");
$v->setAddress("", "", "Musterstrasse 20", "Musterstadt", "", "98765", "Deutschland");
$v->setEmail("thomas.mustermann@thomas-mustermann.de");
$v->setNote("You can take some notes here.\r\nMultiple lines are supported via \\r\\n.");
$v->setURL(" [ Lien ]", "WORK");

$output = $v->getVCard();
$filename = $v->getFileName();

Header("Content-Disposition: attachment; filename=$filename");
Header("Content-Length: ".strlen($output));
Header("Connection: close");
Header("Content-Type: text/x-vCard; name=$filename");

echo $output;
?>