{"id":14974,"date":"2021-09-19T08:58:27","date_gmt":"2021-09-19T08:58:27","guid":{"rendered":"https:\/\/freehost.page\/?p=14974"},"modified":"2021-09-19T08:58:27","modified_gmt":"2021-09-19T08:58:27","slug":"php-ky-tu-la-ho-ten-v12","status":"publish","type":"post","link":"https:\/\/kiencang.net\/php-ky-tu-la-ho-ten-v12\/","title":{"rendered":"H\u00e0m PHP ph\u00e1t hi\u1ec7n c\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong h\u1ecd t\u00ean ng\u01b0\u1eddi Vi\u1ec7t Nam (v1.2)"},"content":{"rendered":"\n<p>C\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong m\u1eabu h\u01a1n 230 ng\u00e0n h\u1ecd t\u00ean m\u00e0 t\u00f4i c\u00f3 kh\u00f4ng nhi\u1ec1u, v\u00ec d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o \u0111\u00e3 kh\u00e1 chu\u1ea9n ch\u1ec9nh r\u1ed3i. Trong m\u1eabu t\u1ef7 l\u1ec7 ch\u01b0a \u0111\u1ebfn 0,1% d\u1eef li\u1ec7u d\u1ea1ng n\u00e0y.<\/p>\n\n\n\n<p>K\u00fd t\u1ef1 l\u1ea1 l\u00e0 c\u00e1c k\u00fd t\u1ef1 ngo\u00e0i c\u00e1c ch\u1eef c\u00e1i. T\u1ea1m th\u1eddi kh\u00f4ng ph\u00e2n bi\u1ec7t t\u00ean n\u01b0\u1edbc ngo\u00e0i, t\u00ean lai (t\u1ee9c l\u00e0 ch\u1ea5p nh\u1eadn c\u00e1c k\u00fd t\u1ef1 f, j, w, z &#8211; ph\u1ea7n n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c l\u1ecdc \u1edf h\u00e0m kh\u00e1c).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>C\u00e1c k\u00fd t\u1ef1 l\u1ea1 n\u00e0y ph\u1ea7n l\u1edbn l\u00e0 d\u1ea1ng ch\u1ee7 \u0111\u1ed9ng, t\u1ee9c l\u00e0 ng\u01b0\u1eddi nh\u1eadp li\u1ec7u \u00fd th\u1ee9c \u0111\u01b0\u1ee3c vi\u1ec7c n\u00e0y. M\u1ee5c \u0111\u00edch bao g\u1ed3m:<\/p>\n\n\n\n<ul><li>Ch\u00fa th\u00edch th\u00eam cho t\u00ean: v\u00ed d\u1ee5 c\u00e1c h\u1ecd t\u00ean tr\u00f9ng nhau trong danh s\u00e1ch m\u1ed9t l\u1edbp, nh\u00f3m \u0111\u01b0\u1ee3c ch\u00fa th\u00edch th\u00eam nh\u01b0 <code>(1)<\/code>, <code>(2)<\/code>, <code>(A)<\/code>, <code>(B)<\/code>, ho\u1eb7c c\u00e1c ch\u00fa th\u00edch kh\u00e1c nh\u01b0 <code>(HN)<\/code>, <code>(KT)<\/code>, <code>(SG)<\/code>, <code>*<\/code><\/li><li>L\u00e0 d\u1ea1ng vi\u1ebft t\u1eaft v\u1edbi nh\u1eefng h\u1ecd t\u00ean d\u00e0i, \u0111i\u1ec3n h\u00ecnh \u0111\u01b0\u1ee3c d\u00f9ng cho h\u1ecd ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 nguy\u1ec5n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c vi\u1ebft t\u1eaft th\u00e0nh <code>ng.<\/code> ho\u1eb7c <code>ng~<\/code> ho\u1eb7c <code>ng<\/code>, s\u1ed1 l\u01b0\u1ee3ng n\u00e0y chi\u1ebfm h\u01a1n 2\/3 nguy\u00ean nh\u00e2n k\u00fd t\u1ef1 b\u1ea5t th\u01b0\u1eddng trong t\u00ean;<\/li><li>M\u1ed9t d\u1ea1ng vi\u1ebft t\u1eaft kh\u00e1c l\u00e0 <code>T.<\/code> d\u00e0nh cho <code>Th\u1ecb<\/code> nh\u01b0ng t\u00f4i kh\u00f4ng s\u1eeda v\u00ec s\u1ed1 l\u01b0\u1ee3ng qu\u00e1 \u00edt;<\/li><\/ul>\n\n\n\n<p>Ph\u00e2n t\u00edch th\u00eam v\u1ec1 <a href=\"https:\/\/kiencang.net\/cu-phap-co-ban-regex\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u00fa ph\u00e1p regex (bi\u1ec3u th\u1ee9c ch\u00ednh quy)<\/a> \u0111\u1ec3 b\u1eaft l\u1ed7i c\u00e1c h\u1ecd t\u00ean c\u00f3 ch\u00fa th\u00edch:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(&#91;123]|(\\(.*\\))|(\\&#91;.*\\])|\\*|\\s\\-*\\s*&#91;abcABC])$<\/code><\/pre>\n\n\n\n<ul><li>D\u1ea5u <code>$<\/code> l\u00e0 \u0111\u1ec3 b\u1eaft bu\u1ed9c c\u00e1c k\u00fd t\u1ef1 n\u00e0y ph\u1ea3i n\u1eb1m cu\u1ed1i th\u00ec m\u1edbi t\u00ednh;<\/li><li>D\u1ea5u <code>|<\/code> ngh\u0129a l\u00e0 ho\u1eb7c, t\u1ee9c l\u00e0 tr\u00f9ng v\u1edbi m\u1ed9t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u00e0 b\u1eaft l\u1ed7i;<\/li><li><code>\\123<\/code> ngh\u0129a l\u00e0 s\u1ed1 t\u1eeb 1 ho\u1eb7c 2 ho\u1eb7c 3 th\u00ec b\u1eaft;<\/li><li><code>\\(.*\\)<\/code> ngh\u0129a l\u00e0 c\u1ee9 c\u00f3 d\u1ea5u <code>()<\/code> \u1edf cu\u1ed1i, \u1edf trong c\u00f3 b\u1ea5t k\u1ef3 k\u00fd t\u1ef1 n\u00e0o c\u0169ng b\u1eaft, v\u00ed d\u1ee5 (1), (A) l\u00e0 \u0111\u1ec1u b\u1eaft;<\/li><li><code>\\[.*\\]<\/code> c\u0169ng t\u01b0\u01a1ng t\u1ef1, c\u1ee9 c\u00f3 d\u1ea5u [] \u1edf cu\u1ed1i, \u1edf trong c\u00f3 b\u1ea5t k\u1ef3 k\u00fd t\u1ef1 n\u00e0o c\u0169ng b\u1eaft, v\u00ed d\u1ee5 [1], [A] l\u00e0 \u0111\u1ec1u b\u1eaft;<\/li><li><code>\\*<\/code> d\u1ea5u * sau d\u1ea5u \\ ngh\u0129a l\u00e0 d\u1ea5u * th\u00f4ng th\u01b0\u1eddng, c\u00e2u l\u1ec7nh n\u00e0y h\u00e0m ngh\u0129a c\u00f3 d\u1ea5u * \u1edf cu\u1ed1i t\u00ean l\u00e0 b\u1eaft;<\/li><li><code>\\s-*\\s*[abcABC]<\/code> th\u00ec \\s \u0111\u1ea1i di\u1ec7n cho kho\u1ea3ng tr\u1eafng, * ngh\u0129a l\u00e0 c\u00f3 c\u0169ng \u0111\u01b0\u1ee3c, kh\u00f4ng c\u00f3 c\u0169ng \u0111\u01b0\u1ee3c, n\u00f3 s\u1ebd b\u1eaft c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3u nh\u01b0 <code>L\u00ea Ph\u01b0\u01a1ng Th\u1ea3o A<\/code>, <code>L\u00ea Ph\u01b0\u01a1ng Th\u1ea3o - B<\/code><\/li><\/ul>\n\n\n\n<p>Regex h\u01a1i kh\u00f3 hi\u1ec3u, nh\u01b0ng ch\u1ec9 l\u00e0 l\u00fac \u0111\u1ea7u, n\u1ebfu c\u00e1c b\u1ea1n quen d\u1ea7n s\u1ebd th\u1ea5y n\u00f3 r\u1ea5t hay, v\u00ec n\u00f3 gi\u00fap cho ch\u00fang ta \u0111\u1ee1 ph\u1ea3i vi\u1ebft c\u00e1c c\u00e2u l\u1ec7nh d\u00e0i d\u00f2ng, m\u1ea5t th\u1eddi gian trong khi hi\u1ec7u qu\u1ea3 c\u00f3 th\u1ec3 k\u00e9m h\u01a1n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>Nhi\u1ec7m v\u1ee5 c\u1ee7a m\u00e3 n\u00e0y l\u00e0 x\u00f3a b\u1ecf c\u00e1c k\u00fd t\u1ef1 b\u1ea5t th\u01b0\u1eddng \u1edf cu\u1ed1i t\u1eeb, v\u00e0 ch\u1ec9nh s\u1eeda t\u1eeb vi\u1ebft t\u1eaft c\u00f3 \u0111\u1ed9 tin c\u1eady cao d\u00e0nh cho h\u1ecd nguy\u1ec5n.<\/p>\n\n\n\n<p>C\u1ea3 hai thao t\u00e1c ch\u1ec9nh s\u1eeda d\u1eef li\u1ec7u n\u00e0y \u0111\u1ec1u r\u1ea5t an to\u00e0n, v\u00e0 gi\u00fap ch\u00fang ta c\u1ea3i thi\u1ec7n m\u1ee9c \u0111\u1ed9 \u0111\u1ed3ng b\u1ed9 c\u1ee7a d\u1eef li\u1ec7u m\u1eabu.<\/p>\n\n\n\n<p>K\u1ebft h\u1ee3p h\u00e0m n\u00e0y v\u1edbi <a href=\"https:\/\/kiencang.net\/php-chuyen-dau-thanh-v12\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u00e0m ch\u1ec9nh s\u1eeda v\u1ecb tr\u00ed d\u1ea5u ti\u1ebfng Vi\u1ec7t<\/a>, <a href=\"https:\/\/kiencang.net\/php-dinh-ho-ten-nguoi\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u00e0m ch\u1ec9nh s\u1eeda d\u00ednh t\u1eeb<\/a> v\u00e0 <a href=\"https:\/\/kiencang.net\/php-vietnamese-hex-converter\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u00e0m chuy\u1ec3n \u0111\u1ed5i m\u00e3 hex<\/a>, ch\u00fang ta s\u1ebd c\u00f3 d\u1eef li\u1ec7u m\u1eabu th\u1ed1ng nh\u1ea5t v\u00e0 \u0111\u1ed3ng \u0111\u1ec1u, \u0111\u1ee7 \u0111\u1ec3 ti\u1ebfn h\u00e0nh th\u1ed1ng k\u00ea.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<p>File n\u00e0y c\u1ea7n require \u0111\u1ebfn c\u00e1c file sau:<\/p>\n\n\n\n<ul><li><a href=\"https:\/\/kiencang.net\/mang-php-nguyen-am-phu-am-v12\/\" target=\"_blank\" rel=\"noreferrer noopener\">File ch\u1ee9a c\u00e1c m\u1ea3ng nguy\u00ean \u00e2m v\u00e0 ph\u1ee5 \u00e2m ti\u1ebfng Vi\u1ec7t<\/a>;<\/li><li><a href=\"https:\/\/kiencang.net\/php-thao-tac-chuoi-tieng-viet-v12\/\" target=\"_blank\" rel=\"noreferrer noopener\">File thao t\u00e1c \u0111\u01a1n gi\u1ea3n chu\u1ed7i ti\u1ebfng Vi\u1ec7t<\/a>;<\/li><li><a href=\"https:\/\/kiencang.net\/php-vietnamese-hex-converter\/\" target=\"_blank\" rel=\"noreferrer noopener\">File chuy\u1ec3n \u0111\u1ed5i m\u00e3 hex cho ti\u1ebfng Vi\u1ec7t<\/a>;<\/li><\/ul>\n\n\n\n<p><strong>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf<\/strong>: c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1eef li\u1ec7u h\u1ecd t\u00ean th\u00f4 ban \u0111\u1ea7u, \u0111\u1ec3 cho <a href=\"https:\/\/hoten.org\/\">k\u1ebft qu\u1ea3 th\u1ed1ng k\u00ea v\u1ec1 h\u1ecd t\u00ean ng\u01b0\u1eddi Vi\u1ec7t Nam<\/a> c\u00f3 ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">H\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng<\/h2>\n\n\n\n<ul><li>\u0110\u1ec3 ki\u1ec3m tra t\u1ea5t h\u1ecd t\u00ean \u0111\u1ea7y \u0111\u1ee7 c\u00f3 k\u00fd t\u1ef1 l\u1ea1 b\u1ea1n d\u00f9ng h\u00e0m <code>vn_filter_unusual_char_big($str)<\/code><\/li><li>H\u00e0m tr\u00ean c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u00f4 h\u00ecnh k\u00fd t\u1ef1 l\u1ea1 trong d\u1eef li\u1ec7u c\u1ee7a b\u1ea1n \u0111\u1ec3 c\u00f3 th\u1ec3 b\u1ed5 sung th\u00eam c\u00e1c h\u00e0m kh\u00e1c n\u1ebfu c\u1ea7n;<\/li><li>Ph\u00e1t hi\u1ec7n c\u00e1c chu\u1ed7i vi\u1ebft t\u1eaft cho nguy\u1ec5n b\u1ea1n d\u00f9ng h\u00e0m <code>vn_abbr_nguyen_check($str)<\/code>, n\u00f3 s\u1ebd b\u1eaft c\u00e1c h\u1ecd t\u00ean nh\u01b0 ng~ \u0111\u1ee9c anh minh, <code>ng~\u0111\u1ee9c anh minh<\/code>, <code>ng. \u0111\u1ee9c anh minh<\/code>, <code>ng.\u0111\u1ee9c anh minh<\/code> v\u00e0 <code>ng \u0111\u1ee9c anh minh<\/code>, c\u00e1c k\u00fd t\u1ef1 b\u1eaft c\u00f3 th\u1ec3 \u1edf trong \u0111\u1ec7m (c\u00f3 m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn t\u00ean ng\u01b0\u1eddi s\u1eed d\u1ee5ng \u0111\u1ec7m l\u00e0 h\u1ecd nguy\u1ec5n, th\u01b0\u1eddng l\u00e0 h\u1ecd m\u1eb9);<\/li><li>Thay th\u1ebf c\u00e1c vi\u1ebft t\u1eaft trong m\u00f4 h\u00ecnh tr\u00ean b\u1eb1ng chu\u1ed7i <code>nguy\u1ec5n<\/code> b\u1ea1n s\u1eed d\u1ee5ng h\u00e0m <code>vn_abbr_nguyen_rep($str)<\/code><\/li><li>Ki\u1ec3m tra ph\u1ea7n cu\u1ed1i c\u1ee7a h\u1ecd t\u00ean c\u00f3 c\u00e1c ch\u00fa th\u00edch nh\u01b0 1, 2, (A), (B), (), [], * b\u1ea1n d\u00f9ng h\u00e0m <code>vn_unu_end_char_check($name)<\/code>, trong \u0111\u00f3 $name l\u00e0 chu\u1ed7i h\u1ecd t\u00ean \u0111\u1ea7y \u0111\u1ee7;<\/li><li>\u0110\u1ec3 x\u00f3a c\u00e1c ph\u1ea7n cu\u1ed1i v\u1edbi c\u00e1c ch\u00fa th\u00edch tr\u00ean b\u1ea1n d\u00f9ng h\u00e0m <code>vn_rmv_unu_end_char($name)<\/code><\/li><\/ul>\n\n\n\n<p>V\u00ed d\u1ee5 v\u1ec1 c\u00fa ph\u00e1p \u0111\u1ec3 s\u1eeda v\u1edbi vi\u1ebft t\u1eaft c\u1ee7a h\u1ecd <code>nguy\u1ec5n<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>if (vn_abbr_nguyen_check($str)) {\n         vn_abbr_nguyen_rep($str);\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">M\u00e3 ho\u00e0n ch\u1ec9nh<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;?php\n\n\/* \n * Filter unusual characters in Vietnamese names v1.2 (final)\n * MIT License\n * Nguyen Duc Anh - freehost.page\n *\/\n\n\/\/\/=============================================================================\n\n\n\/\/ ph\u00e1t hi\u1ec7n t\u1ea5t c\u1ea3 k\u00fd t\u1ef1 l\u1ea1, d\u00e0nh cho m\u1ed9t t\u1eeb\nfunction vn_filter_unusual_char($str) {\n    $rs = 0; \/\/ gi\u1ea3 \u0111\u1ecbnh l\u00e0 kh\u00f4ng b\u1ecb v\u1ea5n \u0111\u1ec1 k\u00fd t\u1ef1 l\u1ea1    \n    \/\/ g\u1ed9p m\u1ea3ng 29 k\u00fd t\u1ef1 v\u00e0 m\u1ea3ng c\u00e1c nguy\u00ean \u00e2m c\u00f3 d\u1ea5u \u0111\u1ec3 ra t\u1ea5t c\u1ea3 c\u00e1c k\u00fd t\u1ef1 \u0111\u01b0\u1ee3c ph\u00e9p d\u00f9ng trong t\u1eeb ti\u1ebfng Vi\u1ec7t\n    $all_lett = vna_all_lett(); \/\/ b\u1ea3ng ch\u1eef c\u00e1i\n    $acc_char = vna_acc_char_array(); \/\/ c\u00e1c nguy\u00ean \u00e2m \u0111\u01a1n c\u00f3 d\u1ea5u\n    $frc = array(\"f\",\"j\",\"w\",\"z\"); \/\/ kh\u00f4ng lo\u1ea1i b\u1ecf c\u00e1c t\u00ean n\u01b0\u1edbc ngo\u00e0i\n    \n    $usual = array_merge($all_lett, $acc_char, $frc); \/\/ g\u1ed9p 3 m\u1ea3ng l\u1ea1i\n\n    $str2 = pop_hex_convert($str); \/\/ chuy\u1ec3n m\u00e3 h\u00f3a v\u00e0 chuy\u1ec3n n\u00f3 v\u1ec1 k\u00fd t\u1ef1 th\u01b0\u1eddng\n    $chars = preg_split('\/\/u', $str2, -1, PREG_SPLIT_NO_EMPTY); \/\/ t\u00e1ch c\u00e1c k\u00fd t\u1ef1 c\u1ee7a t\u00ean vi\u1ebft th\u01b0\u1eddng v\u00e0 \u0111\u01b0a n\u00f3 v\u00e0o m\u1ea3ng\n\n    foreach ($chars as $char) {\n        if (!in_array($char, $usual)) {$rs = 1; break;} \/\/ ph\u00e1t hi\u1ec7n ra k\u00fd t\u1ef1 l\u1ea1\n    }\n\nreturn $rs;    \n}\n\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/ ph\u00e1t hi\u1ec7n t\u1ea5t c\u1ea3 k\u00fd t\u1ef1 l\u1ea1, d\u00e0nh cho m\u1ed9t chu\u1ed7i nhi\u1ec1u t\u1eeb\nfunction vn_filter_unusual_char_big($str) {\n    $rs = 0;  \n    $namex = vn_rmv_wsp($str); \/\/ x\u00f3a b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba\n    $words = mb_split(' ', $namex); \/\/ t\u00e1ch ra th\u00e0nh m\u1ea3ng nhi\u1ec1u t\u1eeb\n    \n    foreach ($words as $word) {\n        $rs = vn_filter_unusual_char($word);\n        if ($rs) {break;}\n    }\n \nreturn $rs;   \n}\n\n\n\/\/\/=============================================================================\n\/\/ ki\u1ec3m tra ph\u1ea7n cu\u1ed1i c\u00f3 c\u00e1c k\u00fd t\u1ef1 nh\u01b0 *, (A), 1, 2 (HN),vv th\u00ec lo\u1ea1i b\u1ecf, d\u00e0nh cho\n\/\/ A, B, C \u1edf cu\u1ed1i c\u0169ng \u0111\u01b0\u1ee3c b\u1eaft\n\/\/ m\u1ed9t c\u1ee5m t\u1eeb h\u1ecd t\u00ean \u0111\u1ea7y \u0111\u1ee7\nfunction vn_unu_end_char_check($name) {\n    $pattern = '\/(&#91;123]|(\\(.*\\))|(\\&#91;.*\\])|\\*|\\s\\-*\\s*&#91;abcABC])$\/'; \/\/ c\u00fa ph\u00e1p c\u1ee7a regex\n    $namex = pop_hex_convert($name); \/\/ chuy\u1ec3n th\u00e0nh m\u00e3 ph\u1ed5 bi\u1ebfn v\u00e0 k\u00fd t\u1ef1 th\u01b0\u1eddng\n    $rs = preg_match($pattern, $namex); \/\/ so kh\u1edbp xem c\u00f3 hay kh\u00f4ng\n\nreturn $rs;     \n}\n\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/Lo\u1ea1i b\u1ecf ph\u1ea7n cu\u1ed1i c\u00f3 c\u00e1c k\u00fd t\u1ef1 nh\u01b0 *, (A), 1, 2 (HN),vv, d\u00e0nh cho m\u1ed9t c\u1ee5m t\u1eeb h\u1ecd t\u00ean \u0111\u1ea7y \u0111\u1ee7\n\/\/A, B, C \u1edf cu\u1ed1i c\u0169ng \u0111\u01b0\u1ee3c s\u1eeda\nfunction vn_rmv_unu_end_char($name) {\n    $pattern = '\/(&#91;123]|(\\(.*\\))|(\\&#91;.*\\])|\\*|\\s\\-*\\s*&#91;abcABC])$\/'; \n    $namex = preg_replace($pattern, '', $name); \/\/ th\u1ef1c hi\u1ec7n x\u00f3a\n\nreturn vn_rmv_wsp($namex); \/\/ lo\u1ea1i b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba      \n} \n\n\n\/\/\/=============================================================================\n\n\n\/\/ D\u1ea5u ch\u1ea5m t\u1ed3n t\u1ea1i trong t\u00ean\nfunction vn_dot_in_name_check($name) {\n    $pattern = '\/\\.\/'; \/\/ c\u00fa ph\u00e1p c\u1ee7a regex\n    $rs = preg_match($pattern, $name); \/\/ so kh\u1edbp xem c\u00f3 hay kh\u00f4ng\n\nreturn $rs;     \n}\n\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/ Thay th\u1ebf b\u1eb1ng kho\u1ea3ng tr\u1eafng s\u1ebd ph\u00f9 h\u1ee3p h\u01a1n trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p\nfunction vn_dot_in_name_rep($name) {\n    $pattern = '\/\\.\/'; \/\/ c\u00fa ph\u00e1p c\u1ee7a regex \n    $namex = preg_replace($pattern, ' ', $name); \/\/ th\u1ef1c hi\u1ec7n thay th\u1ebf\n\nreturn vn_rmv_wsp($namex); \/\/ lo\u1ea1i b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba     \n} \n\n\n\n\/\/\/=============================================================================\n\n\n\/\/ ph\u00e1t hi\u1ec7n c\u00e1c t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a nguy\u1ec5n, d\u00e0nh cho m\u1ed9t c\u1ee5m t\u1eeb h\u1ecd t\u00ean \u0111\u1ea7y \u0111\u1ee7\nfunction vn_abbr_nguyen_check($str) {\n    $rs = 0;\n    $abbr_nguyen = array (\"ng.\",\"ng\",\"ng~\"); \/\/ c\u00e1c m\u1eabu vi\u1ebft t\u1eaft \u0111\u1ea7u v\u00e0o\n    $namex = pop_hex_convert($str); \/\/ x\u00f3a b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba, chuy\u1ec3n v\u1ec1 k\u00fd t\u1ef1 th\u01b0\u1eddng\n    $words = mb_split(' ', $namex); \/\/ t\u00e1ch ra th\u00e0nh m\u1ea3ng nhi\u1ec1u t\u1eeb\n    \n    foreach ($words as $word) {\n        $rs1 = in_array($word,$abbr_nguyen); \/\/ ki\u1ec3m tra t\u1eeb t\u00e1ch c\u00f3 thu\u1ed9c m\u1ea3ng vi\u1ebft t\u1eaft\n        \n        $pt2 = '\/ng\\.\/';\n        $rs2 = preg_match($pt2, $word); \/\/ ki\u1ec3m tra ng. c\u00f3 trong t\u1eeb t\u00e1ch?\n        \n        $pt3 = '\/ng\\~\/';\n        $rs3 = preg_match($pt3, $word); \/\/ ki\u1ec3m tra ng~ c\u00f3 trong t\u1eeb t\u00e1ch       \n        \n        if ($rs1 || $rs2 || $rs3) {$rs = 1; break;} \/\/ n\u1ebfu c\u00f3 th\u00ec ghi nh\u1eadn\n    }\n\nreturn $rs;    \n}\n\n\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\n\/\/ thay th\u1ebf t\u1eeb vi\u1ebft t\u1eaft c\u1ee7a nguy\u1ec5n, d\u00e0nh cho m\u1ed9t c\u1ee5m t\u1eeb h\u1ecd t\u00ean \u0111\u1ea7y \u0111\u1ee7\nfunction vn_abbr_nguyen_rep($str) {\n    $new_name = '';\n    $abbr_nguyen = array (\"ng.\",\"ng\",\"ng~\"); \/\/ c\u00e1c m\u1eabu vi\u1ebft t\u1eaft \u0111\u1ea7u v\u00e0o\n    $namex = pop_hex_convert($str); \/\/ x\u00f3a b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba, chuy\u1ec3n v\u1ec1 k\u00fd t\u1ef1 th\u01b0\u1eddng\n    $words = mb_split(' ', $namex); \/\/ t\u00e1ch ra th\u00e0nh m\u1ea3ng nhi\u1ec1u t\u1eeb\n    \n    foreach ($words as $word) {\n        \/\/ n\u1ebfu ph\u00e1t hi\u1ec7n th\u00ec g\u00e1n\n        if (in_array($word,$abbr_nguyen)) {$word = \"nguy\u1ec5n\";}\n        \n        $pt2 = '\/ng\\.\/';\n        $rs2 = preg_match($pt2, $word);\n        \/\/ n\u1ebfu ph\u00e1t hi\u1ec7n th\u00ec thay th\u1ebf\n        if ($rs2) {$word = preg_replace($pt2, 'nguy\u1ec5n ', $word);}\n        \n        $pt3 = '\/ng\\~\/';\n        $rs3 = preg_match($pt3, $word); \n        \/\/ n\u1ebfu ph\u00e1t hi\u1ec7n th\u00ec thay th\u1ebf\n        if ($rs3) {$word = preg_replace($pt3, 'nguy\u1ec5n ', $word);}\n        \n        $new_name .= $word.' ';\n    }\n    \n    if ($new_name == '') {$new_name = $str;} \/\/ d\u1ef1 ph\u00f2ng\n\nreturn vn_rmv_wsp($new_name); \/\/ lo\u1ea1i b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba     \n}\n\n\n\/\/\/=============================================================================\n\n\n\/\/ ph\u00e1t hi\u1ec7n c\u00e1c t\u1eeb c\u00f3 s\u1ed1 0 th\u00ec s\u1eeda th\u00e0nh ch\u1eef o\nfunction vn_zero_err_check($str) {\n    $rs = 0;\n    $namex = pop_hex_convert($str); \/\/ x\u00f3a b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba, chuy\u1ec3n v\u1ec1 k\u00fd t\u1ef1 th\u01b0\u1eddng\n    $words = mb_split(' ', $namex); \/\/ t\u00e1ch ra th\u00e0nh m\u1ea3ng nhi\u1ec1u t\u1eeb\n    \n    foreach ($words as $word) {\n        $ptz = '\/0\/';\n        $rsz = preg_match($ptz, $word); \/\/ ki\u1ec3m tra s\u1ed1 0 c\u00f3 trong t\u1eeb t\u00e1ch       \n        \n        if ($rsz &amp;&amp; vn_num_char($word) &gt; 1) {$rs = 1; break;} \/\/ n\u1ebfu c\u00f3 th\u00ec ghi nh\u1eadn\n    }\n\nreturn $rs;    \n}\n\n\n\/\/ thay th\u1ebf s\u1ed1 0 th\u00e0nh ch\u1eef o\nfunction vn_zero_err_rep($str) {\n    $new_name = '';\n    $namex = pop_hex_convert($str); \/\/ x\u00f3a b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba, chuy\u1ec3n v\u1ec1 k\u00fd t\u1ef1 th\u01b0\u1eddng\n    $words = mb_split(' ', $namex); \/\/ t\u00e1ch ra th\u00e0nh m\u1ea3ng nhi\u1ec1u t\u1eeb\n    \n    foreach ($words as $word) {        \n        $ptz = '\/0\/';\n        $rsz = preg_match($ptz, $word); \/\/ ki\u1ec3m tra s\u1ed1 0 c\u00f3 trong t\u1eeb t\u00e1ch    \n        \/\/ n\u1ebfu ph\u00e1t hi\u1ec7n th\u00ec thay th\u1ebf\n        if ($rsz &amp;&amp; vn_num_char($word) &gt; 1) {$word = preg_replace($ptz, 'o', $word);}\n        \n        $new_name .= $word.' ';\n    }\n    \n    if ($new_name == '') {$new_name = $str;} \/\/ d\u1ef1 ph\u00f2ng\n\nreturn vn_rmv_wsp($new_name); \/\/ lo\u1ea1i b\u1ecf kho\u1ea3ng tr\u1eafng d\u01b0 th\u1eeba     \n}\n\n\/\/\/==================================================================== End code<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong m\u1eabu h\u01a1n 230 ng\u00e0n h\u1ecd t\u00ean m\u00e0 t\u00f4i c\u00f3 kh\u00f4ng nhi\u1ec1u, v\u00ec d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o \u0111\u00e3 kh\u00e1 chu\u1ea9n ch\u1ec9nh r\u1ed3i. Trong m\u1eabu t\u1ef7 l\u1ec7 ch\u01b0a \u0111\u1ebfn 0,1% d\u1eef li\u1ec7u d\u1ea1ng n\u00e0y. K\u00fd t\u1ef1 l\u1ea1 l\u00e0 c\u00e1c k\u00fd t\u1ef1 ngo\u00e0i c\u00e1c ch\u1eef c\u00e1i. T\u1ea1m th\u1eddi kh\u00f4ng ph\u00e2n bi\u1ec7t t\u00ean n\u01b0\u1edbc &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[238,241],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>H\u00e0m PHP ph\u00e1t hi\u1ec7n c\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong h\u1ecd t\u00ean ng\u01b0\u1eddi Vi\u1ec7t Nam (v1.2) &#8226; Ki\u1ebfn c\u00e0ng<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kiencang.net\/php-ky-tu-la-ho-ten-v12\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"H\u00e0m PHP ph\u00e1t hi\u1ec7n c\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong h\u1ecd t\u00ean ng\u01b0\u1eddi Vi\u1ec7t Nam (v1.2) &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"C\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong m\u1eabu h\u01a1n 230 ng\u00e0n h\u1ecd t\u00ean m\u00e0 t\u00f4i c\u00f3 kh\u00f4ng nhi\u1ec1u, v\u00ec d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o \u0111\u00e3 kh\u00e1 chu\u1ea9n ch\u1ec9nh r\u1ed3i. Trong m\u1eabu t\u1ef7 l\u1ec7 ch\u01b0a \u0111\u1ebfn 0,1% d\u1eef li\u1ec7u d\u1ea1ng n\u00e0y. K\u00fd t\u1ef1 l\u1ea1 l\u00e0 c\u00e1c k\u00fd t\u1ef1 ngo\u00e0i c\u00e1c ch\u1eef c\u00e1i. T\u1ea1m th\u1eddi kh\u00f4ng ph\u00e2n bi\u1ec7t t\u00ean n\u01b0\u1edbc &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/php-ky-tu-la-ho-ten-v12\/\" \/>\n<meta property=\"og:site_name\" content=\"Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/anhducnguyen87\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-09-19T08:58:27+00:00\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n \u0110\u1ee9c Anh\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"H\u00e0m PHP ph\u00e1t hi\u1ec7n c\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong h\u1ecd t\u00ean ng\u01b0\u1eddi Vi\u1ec7t Nam (v1.2) &#8226; Ki\u1ebfn c\u00e0ng","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/kiencang.net\/php-ky-tu-la-ho-ten-v12\/","og_locale":"vi_VN","og_type":"article","og_title":"H\u00e0m PHP ph\u00e1t hi\u1ec7n c\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong h\u1ecd t\u00ean ng\u01b0\u1eddi Vi\u1ec7t Nam (v1.2) &#8226; Ki\u1ebfn c\u00e0ng","og_description":"C\u00e1c k\u00fd t\u1ef1 l\u1ea1 trong m\u1eabu h\u01a1n 230 ng\u00e0n h\u1ecd t\u00ean m\u00e0 t\u00f4i c\u00f3 kh\u00f4ng nhi\u1ec1u, v\u00ec d\u1eef li\u1ec7u \u0111\u1ea7u v\u00e0o \u0111\u00e3 kh\u00e1 chu\u1ea9n ch\u1ec9nh r\u1ed3i. Trong m\u1eabu t\u1ef7 l\u1ec7 ch\u01b0a \u0111\u1ebfn 0,1% d\u1eef li\u1ec7u d\u1ea1ng n\u00e0y. K\u00fd t\u1ef1 l\u1ea1 l\u00e0 c\u00e1c k\u00fd t\u1ef1 ngo\u00e0i c\u00e1c ch\u1eef c\u00e1i. 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