public static function change_encoding($data, $input, $output)
{
$input = SimplePie_Misc::encoding($input);
$output = SimplePie_Misc::encoding($output);
if ($input === 'US-ASCII') {
static $non_ascii_octects = '';
if (!$non_ascii_octects) {
for ($i = 0x80; $i <= 0xff; $i++) {
$non_ascii_octects .= chr($i);
}
}
$data = substr($data, 0, strcspn($data, $non_ascii_octects));
}
if ($input === 'windows-1252' && $output === 'UTF-8') {
return SimplePie_Misc::windows_1252_to_utf8($data);
} elseif (function_exists('mb_convert_encoding') && ($return = SimplePie_Misc::change_encoding_mbstring($data, $input, $output))) {
return $return;
} elseif (function_exists('iconv') && ($return = SimplePie_Misc::change_encoding_iconv($data, $input, $output))) {
return $return;
} else {
return false;
}
}
/**
* Change a string from one encoding to another
*
* @param string $data Raw data in $input encoding
* @param string $input Encoding of $data
* @param string $output Encoding you want
* @return string|boolean False if we can't convert it
*/
public static function change_encoding($data, $input, $output)
{
$input = SimplePie_Misc::encoding($input);
$output = SimplePie_Misc::encoding($output);
// We fail to fail on non US-ASCII bytes
if ($input === 'US-ASCII') {
static $non_ascii_octects = '';
if (!$non_ascii_octects) {
for ($i = 0x80; $i <= 0xff; $i++) {
$non_ascii_octects .= chr($i);
}
}
$data = substr($data, 0, strcspn($data, $non_ascii_octects));
}
// This is first, as behaviour of this is completely predictable
if ($input === 'windows-1252' && $output === 'UTF-8') {
return SimplePie_Misc::windows_1252_to_utf8($data);
} elseif (function_exists('mb_convert_encoding') && ($return = SimplePie_Misc::change_encoding_mbstring($data, $input, $output))) {
return $return;
} elseif (function_exists('iconv') && ($return = SimplePie_Misc::change_encoding_iconv($data, $input, $output))) {
return $return;
} else {
return false;
}
}
/**
* Change a string from one encoding to another
*
* @param string $data Raw data in $input encoding
* @param string $input Encoding of $data
* @param string $output Encoding you want
* @return string|boolean False if we can't convert it
*/
public static function change_encoding($data, $input, $output)
{
$input = SimplePie_Misc::encoding($input);
$output = SimplePie_Misc::encoding($output);
// We fail to fail on non US-ASCII bytes
if ($input === 'US-ASCII')
{
static $non_ascii_octects = '';
if (!$non_ascii_octects)
{
for ($i = 0x80; $i <= 0xFF; $i++)
{
$non_ascii_octects .= chr($i);
}
}
$data = substr($data, 0, strcspn($data, $non_ascii_octects));
}
// This is first, as behaviour of this is completely predictable
if ($input === 'windows-1252' && $output === 'UTF-8')
{
return SimplePie_Misc::windows_1252_to_utf8($data);
}
// This is second, as behaviour of this varies only with PHP version (the middle part of this expression checks the encoding is supported).
elseif (function_exists('mb_convert_encoding') && ($return = SimplePie_Misc::change_encoding_mbstring($data, $input, $output)))
{
return $return;
}
// This is last, as behaviour of this varies with OS userland and PHP version
elseif (function_exists('iconv') && ($return = SimplePie_Misc::change_encoding_iconv($data, $input, $output)))
{
return $return;
}
// If we can't do anything, just fail
else
{
return false;
}
}