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<?php
if (!function_exists('mb_strlen'))
{
// from Typo3
// author Martin Kutschker <[email protected]>
function mb_strlen($str, $encoding="utf-8")
{
if($encoding != "utf-8")
{ return -1; }
$n=0;
for($i=0; isset($str{$i}); $i++)
{
$c = ord($str{$i});
if (!($c & 0x80)) // single-byte (0xxxxxx)
$n++;
elseif (($c & 0xC0) == 0xC0) // multi-byte starting byte (11xxxxxx)
$n++;
}
return $n;
}
}
if (!function_exists('mb_substr'))
{
// from Typo3
// author Martin Kutschker <[email protected]>
function mb_substr($str, $start, $len=null, $encoding="utf-8")
{
if($encoding != "utf-8")
{ return -1; }
$byte_start = utf8_char2byte_pos($str,$start);
if ($byte_start === false)
return false; // $start outside string length
$str = substr($str,$byte_start);
if ($len != null)
{
$byte_end = utf8_char2byte_pos($str,$len);
if ($byte_end === false) // $len outside actual string length
return $str;
else
return substr($str,0,$byte_end);
}
else return $str;
}
function utf8_char2byte_pos($str,$pos)
{
$n = 0; // number of characters found
$p = abs($pos); // number of characters wanted
if ($pos >= 0)
{
$i = 0;
$d = 1;
} else {
$i = strlen($str)-1;
$d = -1;
}
for( ; isset($str{$i}) && $n<$p; $i+=$d)
{
$c = (int)ord($str{$i});
if (!($c & 0x80)) // single-byte (0xxxxxx)
$n++;
elseif (($c & 0xC0) == 0xC0) // multi-byte starting byte (11xxxxxx)
$n++;
}
if (!isset($str{$i}))
return false; // offset beyond string length
if ($pos >= 0)
{
// skip trailing multi-byte data bytes
while ((ord($str{$i}) & 0x80) && !(ord($str{$i}) & 0x40))
{ $i++; }
} else {
// correct offset
$i++;
}
return $i;
}
if (!function_exists('mb_strtolower')) {
function mb_strtolower($msg, $encoding) {
return $msg;
}
}
}
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