note 82000 modified in function.quoted-printable-decode by vrana
| From: | vrana@php.net | Date: | Wed, 26 Mar 2008 14:52:25 +0000 |
| Subject: | note 82000 modified in function.quoted-printable-decode by vrana | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-137597@lists.php.net to get a copy of this message | ||
<?php
$text = <<<EOF
This function enables you to convert text to a quoted-printable string as well as to create
encoded-words used in email headers (see http://www.faqs.org/rfcs/rfc2047.html).
No line of returned text will be longer than specified. Encoded-words will not contain a newline
character. Special characters are removed.
EOF;
define('QP_LINE_LENGTH', 75);
define('QP_LINE_SEPARATOR', "\r\n");
function quoted_printable_encode($string, $encodedWord = false)
{
if(!preg_match('//u', $string)) {
throw new Exception('Input string is not valid UTF-8');
}
static $wordStart = '=?UTF-8?Q?';
static $wordEnd = '?=';
static $endl = QP_LINE_SEPARATOR;
$lineLength = $encodedWord
? QP_LINE_LENGTH - strlen($wordStart) - strlen($wordEnd)
: QP_LINE_LENGTH;
$string = $encodedWord
? preg_replace('~[\r\n]+~', ' ', $string) // we need encoded word to be single
line
: preg_replace('~\r\n?~', "\n", $string); // normalize line endings
$string = preg_replace('~[\x00-\x08\x0B-\x1F]+~', '', $string); // remove
control characters
$output = $encodedWord ? $wordStart : '';
$charsLeft = $lineLength;
$chr = isset($string{0}) ? $string{0} : null;
$ord = ord($chr);
for ($i = 0; isset($chr); $i++) {
$nextChr = isset($string{$i + 1}) ? $string{$i + 1} : null;
$nextOrd = ord($nextChr);
if (
$ord > 127 or // high byte value
$ord === 95 or // underscore "_"
$ord === 63 && $encodedWord or // "?" in encoded word
$ord === 61 or // equal sign "="
// space or tab in encoded word or at line end
$ord === 32 || $ord === 9 and $encodedWord || !isset($nextOrd) || $nextOrd === 10
) {
$chr = sprintf('=%02X', $ord);
}
if ($ord === 10) { // line feed
$output .= $endl;
$charsLeft = $lineLength;
} elseif (
strlen($chr) < $charsLeft or
strlen($chr) === $charsLeft and $nextOrd === 10 || $encodedWord
) { // add character
$output .= $chr;
$charsLeft-=strlen($chr);
} elseif (isset($nextOrd)) { // another line needed
$output .= $encodedWord
? $wordEnd . $endl . "\t" . $wordStart . $chr
: '=' . $endl . $chr;
$charsLeft = $lineLength - strlen($chr);
}
$chr = $nextChr;
$ord = $nextOrd;
}
return $output . ($encodedWord ? $wordEnd : '');
}
echo quoted_printable_encode($text/*, true*/);
--was--
<?php
$text = <<<EOF
This function enables you to convert text to a quoted-printable string as well as to create
encoded-words used in email headers (see http://www.faqs.org/rfcs/rfc2047.html).
No line of returned text will be longer than specified. Encoded-words will not contain a newline
character. Special characters are removed.
EOF;
define('QP_LINE_LENGTH', 75);
define('QP_LINE_SEPARATOR', "\r\n");
function quoted_printable_encode($string, $encodedWord = false)
{
if(!preg_match('//u', $string)) {
throw new Exception('Input string is not valid UTF-8');
}
static $wordStart = '=?UTF-8?Q?';
static $wordEnd = '?=';
static $endl = QP_LINE_SEPARATOR;
$lineLength = $encodedWord
? QP_LINE_LENGTH - strlen($wordStart) - strlen($wordEnd)
: QP_LINE_LENGTH;
$string = $encodedWord
? preg_replace('~[\r\n]+~', ' ', $string) // we need encoded word to be single
line
: preg_replace('~\r\n?~', "\n", $string); // normalize line endings
$string = preg_replace('~[\x00-\x08\x0B-\x1F]+~', '', $string); // remove
control characters
$output = $encodedWord ? $wordStart : '';
$charsLeft = $lineLength;
$chr = isset($string{0}) ? $string{0} : null;
$ord = ord($chr);
for ($i = 0; isset($chr); $i++) {
$nextChr = isset($string{$i + 1}) ? $string{$i + 1} : null;
$nextOrd = ord($nextChr);
if (
$ord > 127 or // high byte value
$ord === 63 && $encodedWord or // "?" in encoded word
$ord === 61 or // equal sign "="
$ord === 32 || $ord === 9 and // space or tab in encoded word or at line end
$encodedWord || !isset($nextOrd) || $nextOrd === 10
) {
$chr = sprintf('=%02X', $ord);
}
if ($ord === 10) { // line feed
$output .= $endl;
$charsLeft = $lineLength;
} elseif (
strlen($chr) < $charsLeft or
strlen($chr) === $charsLeft and $nextOrd === 10 || $encodedWord
) { // add character
$output .= $chr;
$charsLeft-=strlen($chr);
} elseif (isset($nextOrd)) { // another line needed
$output .= $encodedWord
? $wordEnd . $endl . ' ' . $wordStart . $chr
: '=' . $endl . $chr;
$charsLeft = $lineLength - strlen($chr);
}
$chr = $nextChr;
$ord = $nextOrd;
}
return $output . ($encodedWord ? $wordEnd : '');
}
echo quoted_printable_encode($text/*, true*/);
http://php.net/manual/en/function.quoted-printable-decode.php