PageRenderTime 33ms CodeModel.GetById 16ms app.highlight 11ms RepoModel.GetById 1ms app.codeStats 1ms

/libraries/vendor/joomla/string/src/phputf8/ord.php

https://gitlab.com/vitaliylukin91/idea-rating
PHP | 90 lines | 65 code | 13 blank | 12 comment | 19 complexity | b280b3d72dc6d64e685f70585b5b6dca MD5 | raw file
 1<?php
 2/**
 3* @package utf8
 4*/
 5
 6//---------------------------------------------------------------
 7/**
 8* UTF-8 aware alternative to ord
 9* Returns the unicode ordinal for a character
10* @param string UTF-8 encoded character
11* @return int unicode ordinal for the character
12* @see http://www.php.net/ord
13* @see http://www.php.net/manual/en/function.ord.php#46267
14*/
15function utf8_ord($chr) {
16
17    $ord0 = ord($chr);
18
19    if ( $ord0 >= 0 && $ord0 <= 127 ) {
20        return $ord0;
21    }
22
23    if ( !isset($chr{1}) ) {
24        trigger_error('Short sequence - at least 2 bytes expected, only 1 seen');
25        return FALSE;
26    }
27
28    $ord1 = ord($chr{1});
29    if ( $ord0 >= 192 && $ord0 <= 223 ) {
30        return ( $ord0 - 192 ) * 64
31            + ( $ord1 - 128 );
32    }
33
34    if ( !isset($chr{2}) ) {
35        trigger_error('Short sequence - at least 3 bytes expected, only 2 seen');
36        return FALSE;
37    }
38    $ord2 = ord($chr{2});
39    if ( $ord0 >= 224 && $ord0 <= 239 ) {
40        return ($ord0-224)*4096
41            + ($ord1-128)*64
42                + ($ord2-128);
43    }
44
45    if ( !isset($chr{3}) ) {
46        trigger_error('Short sequence - at least 4 bytes expected, only 3 seen');
47        return FALSE;
48    }
49    $ord3 = ord($chr{3});
50    if ($ord0>=240 && $ord0<=247) {
51        return ($ord0-240)*262144
52            + ($ord1-128)*4096
53                + ($ord2-128)*64
54                    + ($ord3-128);
55
56    }
57
58    if ( !isset($chr{4}) ) {
59        trigger_error('Short sequence - at least 5 bytes expected, only 4 seen');
60        return FALSE;
61    }
62    $ord4 = ord($chr{4});
63    if ($ord0>=248 && $ord0<=251) {
64        return ($ord0-248)*16777216
65            + ($ord1-128)*262144
66                + ($ord2-128)*4096
67                    + ($ord3-128)*64
68                        + ($ord4-128);
69    }
70
71    if ( !isset($chr{5}) ) {
72        trigger_error('Short sequence - at least 6 bytes expected, only 5 seen');
73        return FALSE;
74    }
75    if ($ord0>=252 && $ord0<=253) {
76        return ($ord0-252) * 1073741824
77            + ($ord1-128)*16777216
78                + ($ord2-128)*262144
79                    + ($ord3-128)*4096
80                        + ($ord4-128)*64
81                            + (ord($chr{5})-128);
82    }
83
84    if ( $ord0 >= 254 && $ord0 <= 255 ) {
85        trigger_error('Invalid UTF-8 with surrogate ordinal '.$ord0);
86        return FALSE;
87    }
88
89}
90