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/
http/
guitar.1/
libraries/
phputf8/
- drwxr-xr-x
|
Viewing file:  ord.php (2.33 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
<?php
/**
* @package utf8
* @subpackage strings
*/
//---------------------------------------------------------------
/**
* UTF-8 aware alternative to ord
* Returns the unicode ordinal for a character
* @param string UTF-8 encoded character
* @return int unicode ordinal for the character
* @see http://www.php.net/ord
* @see http://www.php.net/manual/en/function.ord.php#46267
*/
function utf8_ord($chr) {
$ord0 = ord($chr);
if ( $ord0 >= 0 && $ord0 <= 127 ) {
return $ord0;
}
if ( !isset($chr{1}) ) {
trigger_error('Short sequence - at least 2 bytes expected, only 1 seen');
return FALSE;
}
$ord1 = ord($chr{1});
if ( $ord0 >= 192 && $ord0 <= 223 ) {
return ( $ord0 - 192 ) * 64
+ ( $ord1 - 128 );
}
if ( !isset($chr{2}) ) {
trigger_error('Short sequence - at least 3 bytes expected, only 2 seen');
return FALSE;
}
$ord2 = ord($chr{2});
if ( $ord0 >= 224 && $ord0 <= 239 ) {
return ($ord0-224)*4096
+ ($ord1-128)*64
+ ($ord2-128);
}
if ( !isset($chr{3}) ) {
trigger_error('Short sequence - at least 4 bytes expected, only 3 seen');
return FALSE;
}
$ord3 = ord($chr{3});
if ($ord0>=240 && $ord0<=247) {
return ($ord0-240)*262144
+ ($ord1-128)*4096
+ ($ord2-128)*64
+ ($ord3-128);
}
if ( !isset($chr{4}) ) {
trigger_error('Short sequence - at least 5 bytes expected, only 4 seen');
return FALSE;
}
$ord4 = ord($chr{4});
if ($ord0>=248 && $ord0<=251) {
return ($ord0-248)*16777216
+ ($ord1-128)*262144
+ ($ord2-128)*4096
+ ($ord3-128)*64
+ ($ord4-128);
}
if ( !isset($chr{5}) ) {
trigger_error('Short sequence - at least 6 bytes expected, only 5 seen');
return FALSE;
}
if ($ord0>=252 && $ord0<=253) {
return ($ord0-252) * 1073741824
+ ($ord1-128)*16777216
+ ($ord2-128)*262144
+ ($ord3-128)*4096
+ ($ord4-128)*64
+ (ord($chr{5})-128);
}
if ( $ord0 >= 254 && $ord0 <= 255 ) {
trigger_error('Invalid UTF-8 with surrogate ordinal '.$ord0);
return FALSE;
}
}
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