Nákupní košík
/**
* Encodes string to requested format.
* Returns an empty string on failure.
* @param string $str The text to encode
* @param string $encoding The encoding to use; one of 'base64', '7bit', '8bit', 'binary', 'quoted-printable'
* @access public
* @return string
*/
public function EncodeString ($str, $encoding = 'base64') {
$encoded = '';
switch(strtolower($encoding)) {
case 'base64':
$encoded = chunk_split(base64_encode($str), 76, $this->LE);
break;
case '7bit':
case '8bit':
$encoded = $this->FixEOL($str);
//Make sure it ends with a line break
if (substr($encoded, -(strlen($this->LE))) != $this->LE)
$encoded .= $this->LE;
break;
case 'binary':
$encoded = $str;
break;
case 'quoted-printable':
$encoded = $this->EncodeQP($str);
break;
default:
$this->SetError($this->Lang('encoding') . $encoding);
break;
}
return $encoded;
}
/**
* Encode a header string to best (shortest) of Q, B, quoted or none.
* @access public
* @return string
*/
public function EncodeHeader($str, $position = 'text') {
$x = 0;
switch (strtolower($position)) {
case 'phrase':
if (!preg_match('/[\200-\377]/', $str)) {
// Can't use addslashes as we don't know what value has magic_quotes_sybase
$encoded = addcslashes($str, "\0..\37\177\\\"");
if (($str == $encoded) && !preg_match('/[^A-Za-z0-9!#$%&\'*+\/=?^_`{|}~ -]/', $str)) {
return ($encoded);
} else {
return ("\"$encoded\"");
}
}
$x = preg_match_all('/[^\040\041\043-\133\135-\176]/', $str, $matches);
break;
case 'comment':
$x = preg_match_all('/[()"]/', $str, $matches);
// Fall-through
case 'text':
default:
$x += preg_match_all('/[\000-\010\013\014\016-\037\177-\377]/', $str, $matches);
break;
}
if ($x == 0) {
return ($str);
}
$maxlen = 75 - 7 - strlen($this->CharSet);
// Try to select the encoding which should produce the shortest output
if (strlen($str)/3 < $x) {
$encoding = 'B';
if (function_exists('mb_strlen') && $this->HasMultiBytes($str)) {
// Use a custom function which correctly encodes and wraps long
// multibyte strings without breaking lines within a character
$encoded = $this->Base64EncodeWrapMB($str);
} else {
$encoded = base64_encode($str);
$maxlen -= $maxlen % 4;
$encoded = trim(chunk_split($encoded, $maxlen, "\n"));
}
} else {
$encoding = 'Q';
$encoded = $this->EncodeQ($str, $position);
$encoded = $this->WrapText($encoded, $maxlen, true);
$encoded = str_replace('='.$this->LE, "\n", trim($encoded));
}
$encoded = preg_replace('/^(.*)$/m', " =?".$this->CharSet."?$encoding?\\1?=", $encoded);
$encoded = trim(str_replace("\n", $this->LE, $encoded));
return $encoded;
}
/**
* Checks if a string contains multibyte characters.
* @access public
* @param string $str multi-byte text to wrap encode
* @return bool
*/
public function HasMultiBytes($str) {
if (function_exists('mb_strlen')) {
return (strlen($str) > mb_strlen($str, $this->CharSet));
} else { // Assume no multibytes (we can't handle without mbstring functions anyway)
return false;
}
}
/**
* Correctly encodes and wraps long multibyte strings for mail headers
* without breaking lines within a character.
* Adapted from a function by paravoid at http://uk.php.net/manual/en/function.mb-encode-mimeheader.php
* @access public
* @param string $str multi-byte text to wrap encode
* @return string
*/
public function Base64EncodeWrapMB($str) {
$start = "=?".$this->CharSet."?B?";
$end = "?=";
$encoded = "";
$mb_length = mb_strlen($str, $this->CharSet);
// Each line must have length <= 75, including $start and $end
$length = 75 - strlen($start) - strlen($end);
// Average multi-byte ratio
$ratio = $mb_length / strlen($str);
// Base64 has a 4:3 ratio
$offset = $avgLength = floor($length * $ratio * .75);
for ($i = 0; $i < $mb_length; $i += $offset) {
$lookBack = 0;
do {
$offset = $avgLength - $lookBack;
$chunk = mb_substr($str, $i, $offset, $this->CharSet);
$chunk = base64_encode($chunk);
$lookBack++;
