{"id":2018,"date":"2016-05-19T08:30:03","date_gmt":"2016-05-19T08:30:03","guid":{"rendered":"https:\/\/kiencang.net\/?p=2018"},"modified":"2016-05-19T08:30:03","modified_gmt":"2016-05-19T08:30:03","slug":"chuan-hoa-dien-thoai-bang-php","status":"publish","type":"post","link":"https:\/\/kiencang.net\/chuan-hoa-dien-thoai-bang-php\/","title":{"rendered":"Chu\u1ea9n ho\u00e1 d\u1eef li\u1ec7u s\u1ed1 \u0111i\u1ec7n tho\u1ea1i b\u1eb1ng PHP"},"content":{"rendered":"\n<p>X\u1eeda l\u00fd s\u1ed1 \u0111i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 l\u00e0 y\u00eau c\u1ea7u quan tr\u1ecdng trong nhi\u1ec1u b\u00e0i to\u00e1n. \u0110\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng b\u00e0i to\u00e1n li\u00ean quan \u0111\u1ebfn con ng\u01b0\u1eddi, th\u00ed d\u1ee5 s\u1ed1 \u0111i\u1ec7n tho\u1ea1i nh\u00e2n vi\u00ean trong c\u00f4ng ty, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i nh\u1eefng ng\u01b0\u1eddi b\u1ea1n mu\u1ed1n ch\u00e0o h\u00e0ng, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i c\u1ee7a ng\u01b0\u1eddi d\u00e2n trong qu\u1eadn huy\u1ec7n, v.v&#8230;<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">T\u1ea1i sao ph\u1ea3i chu\u1ea9n ho\u00e1? chu\u1ea9n ho\u00e1 \u1edf \u0111\u00e2u?<\/h2>\n\n\n\n<p>S\u1ed1 \u0111i\u1ec7n tho\u1ea1i \u0111\u01b0\u1ee3c l\u01b0u trong c\u01a1 s\u1edf d\u1eef li\u1ec7u. Tr\u01b0\u1edbc khi ng\u01b0\u1eddi ta l\u01b0u ng\u01b0\u1eddi ta s\u1ebd ph\u1ea3i nh\u1eadp d\u1eef li\u1ec7u v\u00e0o. Sau khi ng\u01b0\u1eddi ta l\u01b0u ng\u01b0\u1eddi ta s\u1ebd l\u1ea5y d\u1eef li\u1ec7u ra.<\/p>\n\n\n\n<p>Khi chu\u1ea9n ho\u00e1, t\u1ee9c l\u00e0 ta chu\u1ea9n ho\u00e1 d\u1eef li\u1ec7u l\u01b0u v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u. Chu\u1ea9n ho\u00e1 \u0111\u00f3 c\u00f3 c\u00e1c t\u00e1c d\u1ee5ng:<\/p>\n\n\n\n<ul><li>Ph\u00e1t hi\u1ec7n &amp; lo\u1ea1i b\u1ecf sai s\u00f3t \u1edf kh\u00e2u nh\u1eadp d\u1eef li\u1ec7u;<\/li><li>Gi\u00fap c\u00e1c thao t\u00e1c l\u1ea5y &amp; khai th\u00e1c d\u1eef li\u1ec7u \u0111\u01a1n gi\u1ea3n v\u00e0 ch\u00ednh x\u00e1c h\u01a1n;<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Th\u1ebf n\u00e0o l\u00e0 ph\u00e1t hi\u1ec7n &amp; lo\u1ea1i b\u1ecf sai s\u00f3t \u1edf kh\u00e2u nh\u1eadp d\u1eef li\u1ec7u?<\/h2>\n\n\n\n<p>H\u00e3y quan s\u00e1t s\u1ed1 \u0111i\u1ec7n tho\u1ea1i n\u00e0y 094 694 00 87 &#8211; \u0111\u1ea5y l\u00e0 c\u00e1ch t\u00f4i vi\u1ebft s\u1ed1 \u0111i\u1ec7n tho\u1ea1i, nh\u01b0ng ng\u01b0\u1eddi kh\u00e1c c\u00f3 th\u1ec3 vi\u1ebft th\u1ebf n\u00e0y 0946 940 087, hay 094.694.0087, ho\u1eb7c 094-6940-087<\/p>\n\n\n\n<p>Nh\u01b0 tr\u00ean g\u1ecdi l\u00e0 c\u00e1ch tr\u00ecnh b\u00e0y d\u1eef li\u1ec7u kh\u00e1c nhau. N\u1ebfu ta kh\u00f4ng chu\u1ea9n ho\u00e1, t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c l\u01b0u v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u &#8211; \u0111i\u1ec1u n\u00e0y l\u00e0m d\u1eef li\u1ec7u kh\u00f4ng \u0111\u1ed3ng nh\u1ea5t, v\u00e0 th\u01b0\u1eddng l\u00e0 th\u1eeba th\u00e3i th\u00f4ng tin, ch\u1eb3ng c\u00e1c kho\u1ea3ng tr\u1ed1ng v\u00e0 d\u1ea5u ch\u1ea5m, hay d\u1ea5u c\u00e1ch l\u00e0 kh\u00f4ng c\u1ea7n thi\u1ebft (n\u00f3 c\u1ea7n thi\u1ebft v\u1ec1 m\u1eb7t hi\u1ec3n th\u1ecb ra ngo\u00e0i, nh\u01b0ng kh\u00f4ng c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u01b0u d\u1eef li\u1ec7u).<\/p>\n\n\n\n<p>V\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u1edbn, ng\u01b0\u1eddi ta r\u1ea5t quan t\u00e2m \u0111\u1ebfn kh\u00e2u ti\u1ebft ki\u1ec7m n\u00e0y, t\u00f4i c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m \u0111\u01b0\u1ee3c t\u1eeb 10 t\u1edbi 20% dung l\u01b0\u1ee3ng d\u1eef li\u1ec7u.<\/p>\n\n\n\n<p>R\u1ed3i l\u1ea1i c\u00f2n c\u00f3 th\u1ec3 ng\u01b0\u1eddi ta nh\u1eadp sai n\u1eefa, ch\u1eb3ng h\u1ea1n nh\u1eadp thi\u1ebfu s\u1ed1, hay th\u1eeba s\u1ed1. M\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh t\u1ed1t, s\u1ebd bi\u1ebft l\u00e0 ng\u01b0\u1eddi \u0111i\u1ec1u n\u00e0y, v\u00ec n\u00f3 bi\u1ebft r\u1eb1ng v\u1edbi ki\u1ec3u m\u1eabu nh\u01b0 v\u1eady c\u1ea7n c\u00f3 \u0111\u1ee7 10 s\u1ed1.<\/p>\n\n\n\n<p>V\u1eeba r\u1ed3i t\u00f4i tr\u00ecnh b\u00e0y h\u01a1i ng\u01b0\u1ee3c, \u0111\u00fang ra, ng\u01b0\u1eddi ta ph\u1ea3i ph\u00e1t hi\u1ec7n c\u00f3 sai s\u00f3t hay kh\u00f4ng tr\u01b0\u1edbc, sau \u0111\u00f3 m\u1edbi chu\u1ea9n ho\u00e1 n\u00f3 r\u1ed3i l\u01b0u. Nh\u01b0ng th\u01b0\u1eddng th\u00ec \u0111\u1ec3 ph\u00e1t hi\u1ec7n sai s\u00f3t, ng\u01b0\u1eddi ta l\u1ea1i ph\u1ea3i chu\u1ea9n ho\u00e1 tr\u01b0\u1edbc. T\u1eb9o n\u1eefa b\u1ea1n s\u1ebd th\u1ea5y v\u00ed d\u1ee5 d\u1ec5 hi\u1ec3u h\u01a1n.<\/p>\n\n\n\n<p>C\u00f3 ng\u01b0\u1eddi c\u00f3 th\u1ec3 n\u00f3i, sao ph\u1ea3i chu\u1ea9n ho\u00e1, l\u00fac l\u1ea5y d\u1eef li\u1ec7u \u0111\u1ea7u ra m\u00ecnh x\u1eed l\u00fd c\u0169ng kh\u00f4ng sao m\u00e0. \u0110\u1ec3 t\u00f4i gi\u1ea3i th\u00edch:<\/p>\n\n\n\n<p>N\u1ebfu b\u1ea1n kh\u00f4ng chu\u1ea9n ho\u00e1 d\u1eef li\u1ec7u v\u00e0o \u0111\u1ec3 l\u01b0u, \u0111\u00fang l\u00e0 b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 x\u1eed l\u00fd sau khi b\u1ea1n c\u1ea7n d\u1eef li\u1ec7u, nh\u01b0ng b\u1ea1n c\u00f3 th\u1ea5y l\u00e0 nh\u01b0 v\u1eady v\u1eabn t\u1ed1n m\u1ed9t c\u00f4ng kh\u00f4ng? V\u1eabn t\u1ed1n m\u1ed9t c\u00f4ng nh\u01b0ng chu\u1ea9n ho\u00e1 tr\u01b0\u1edbc gi\u00fap d\u1eef li\u1ec7u s\u1ea1ch s\u1ebd \u0111\u00e1ng tin c\u1eady h\u01a1n, ti\u1ebft ki\u1ec7m dung l\u01b0\u1ee3ng. V\u1eady th\u00ec sao kh\u00f4ng l\u00e0m tr\u01b0\u1edbc?<\/p>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Gi\u1ea3i quy\u1ebft b\u00e0i to\u00e1n<\/h2>\n\n\n\n<p>T\u1ea5t c\u1ea3 c\u00e1c d\u1ea1ng bi\u1ebfn th\u1ec3 c\u1ee7a&nbsp;0946 940 087 (094.694.0087; 094-6940-087;&#8230;) c\u1ea7n \u0111\u01b0a v\u1ec1 d\u1ea1ng thu\u1ea7n nh\u1ea5t:&nbsp;0946940087<\/p>\n\n\n\n<p>T\u1ee9c l\u00e0 li\u1ec1n m\u1ed9t kh\u1ed1i, kh\u00f4ng c\u00f3 kho\u1ea3ng c\u00e1ch n\u00e0o gi\u1eefa c\u00e1c s\u1ed1.<\/p>\n\n\n\n<p>Nh\u01b0 v\u1eady ch\u00fang ta ch\u1ec9 c\u1ea7n ch\u1ebb s\u1ed1 \u0111i\u1ec7n tho\u1ea1i ra th\u00e0nh c\u00e1c ph\u1ea7n kh\u00e1c nhau, r\u1ed3i lo\u1ea1i b\u1ecf nh\u1eefng th\u00e0nh ph\u1ea7n kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ed1, cu\u1ed1i c\u0169ng gh\u00e9p nh\u1eefng ph\u1ea7n c\u00f2n l\u1ea1i theo th\u1ee9 t\u1ef1 l\u1ea7n l\u01b0\u1ee3t.<\/p>\n\n\n\n<p>V\u00ed d\u1ee5&nbsp;094.694.0087 s\u1ebd \u0111\u01b0\u1ee3c chia nh\u01b0 th\u1ebf n\u00e0y:&nbsp;0 \/ 9 \/ 4 \/ . \/ 6 \/ 9 \/ 4 \/ . \/ 0 \/ 0 \/ 8 \/ 7<\/p>\n\n\n\n<p>Hai c\u00f3 d\u1ea5u ch\u1ea5m s\u1ebd b\u1ecb v\u1ee9t \u0111i v\u00ec n\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ed1. V\u1eady l\u00e0 xong.<\/p>\n\n\n\n<p>Code th\u1ef1c t\u1ebf:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function dienthoai_chuan ($dt) {\n $dt_array=(str_split($dt));\n for ($i=0; $i&lt;count($dt_array); $i++) {\n if (($dt_array&#91;$i]!=\"0\") &amp;&amp; ($dt_array&#91;$i]!=\"1\") &amp;&amp; ($dt_array&#91;$i]!=\"2\") &amp;&amp; ($dt_array&#91;$i]!=\"3\") &amp;&amp; ($dt_array&#91;$i]!=\"4\")\n &amp;&amp; ($dt_array&#91;$i]!=\"5\") &amp;&amp; ($dt_array&#91;$i]!=\"6\") &amp;&amp; ($dt_array&#91;$i]!=\"7\") &amp;&amp; ($dt_array&#91;$i]!=\"8\")\n &amp;&amp; ($dt_array&#91;$i]!=\"9\")) {\n $dt_array&#91;$i]=\"del\";\n }\n\n }\n $dt_chuan=\"\";\n for ($i=0; $i&lt;count($dt_array); $i++) {\n if ($dt_array&#91;$i]!=\"del\") {\n $dt_chuan = $dt_chuan.$dt_array&#91;$i];}\n }\n return $dt_chuan;\n }\n<\/code><\/pre>\n\n\n\n<p>\u1ede \u0111\u00e2y t\u00f4i d\u00f9ng <a href=\"https:\/\/kiencang.net\/ham-trong-php\/\" target=\"_blank\" rel=\"noreferrer noopener\">h\u00e0m<\/a>, b\u1edfi v\u00ec kh\u00e2u chu\u1ea9n ho\u00e1 n\u00e0y c\u00f3 th\u1ec3 s\u1ebd d\u00f9ng \u1edf nhi\u1ec1u n\u01a1i kh\u00e1c nhau, d\u00f9ng h\u00e0m gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m c\u00f4ng s\u1ee9c g\u00f5 code h\u01a1n.<\/p>\n\n\n\n<p>C\u00e1c l\u1ec7nh s\u1eed d\u1ee5ng:<\/p>\n\n\n\n<ul><li><code>str_split<\/code> l\u00e0 h\u00e0m c\u1eaft chu\u1ed7i, n\u00f3 s\u1ebd c\u1eaft chu\u1ed7i s\u1ed1 \u0111i\u1ec7n tho\u1ea1i th\u00e0nh t\u1eebng ph\u1ea7n t\u1eed. Ch\u00fa \u00fd l\u00e0 l\u00fac n\u00e0y ta xem s\u1ed1 \u0111i\u1ec7n tho\u1ea1i nh\u01b0 l\u00e0 chu\u1ed1i k\u00fd t\u1ef1 v\u00ec n\u00f3 kh\u00f4ng thu\u1ea7n tu\u00fd l\u00e0 s\u1ed1;<\/li><li><code>str_split<\/code> c\u1eaft v\u00e0 \u0111\u01b0a c\u00e1c ph\u1ea7n t\u1eeb v\u00e0o trong m\u1ea3ng, ta d\u00f9ng ti\u1ebfp h\u00e0m for \u0111\u1ec3 ki\u1ec3m tra c\u00e1c ph\u1ea7n t\u1eed xem c\u00f3 ph\u1ea3i l\u00e0 s\u1ed1 kh\u00f4ng. H\u00e0m for s\u1ebd ch\u1ea1y t\u1eeb ph\u1ea7n t\u1eeb \u0111\u1ea7u ti\u00ean \u0111\u1ebfn ph\u1ea7n t\u1eed cu\u1ed1i c\u00f9ng;<\/li><li>H\u00e0m <code>count<\/code> \u0111\u1ec3 \u0111\u1ec3 \u0111\u1ebfm s\u1ed1 l\u01b0\u1ee3ng c\u1ee7a <a href=\"https:\/\/kiencang.net\/mang-trong-php\/\" target=\"_blank\" rel=\"noreferrer noopener\">m\u1ea3ng<\/a>;<\/li><li>H\u00e0m <code>if<\/code> l\u00e0 h\u00e0m \u0111i\u1ec1u ki\u1ec7n. Nh\u1eefng c\u00f4ng d\u1ee5ng nh\u01b0 h\u00e0m if v\u00e0 h\u00e0m for \u0111\u01b0\u1ee3c d\u00f9ng r\u1ea5t th\u01b0\u1eddng xuy\u00ean trong b\u1ea5t c\u1ee9 ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh n\u00e0o, do v\u1eady b\u1ea1n n\u00ean n\u1eafm r\u00f5;<\/li><\/ul>\n\n\n\n<p>V\u1edbi kh\u1ed1i l\u1ec7nh ban \u0111\u1ea7u, t\u00f4i t\u00ecm t\u1ea5t c\u1ea3 nh\u1eefng ph\u1ea7n t\u1eed kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ed1 r\u1ed3i t\u00f4i \u0111\u1ed5i n\u00f3 th\u00e0nh del.<\/p>\n\n\n\n<p>Ti\u1ebfp theo t\u00f4i l\u1ea1i ch\u1ea1y ti\u1ebfp \u0111\u1ec3 r\u1ed3i c\u1ee9 ph\u1ea7n t\u1eeb n\u00e0o l\u00e0 del t\u00f4i s\u1ebd kh\u00f4ng r\u00e1p l\u1ea1i n\u1eefa. Do v\u1eady c\u00e1i cu\u1ed1i c\u0169ng m\u00e0 t\u00f4i c\u00f3 s\u1ebd ch\u1ec9 l\u00e0 c\u00e1c s\u1ed1 thu\u1ea7n tu\u00fd.<\/p>\n\n\n\n<p>G\u1ee3i \u00fd kh\u00e1c: thay v\u00ec kh\u00e1 m\u1ea5t c\u00f4ng nh\u01b0 t\u00f4i l\u00e0m l\u00e0 so s\u00e1nh t\u1eebng ph\u1ea7n t\u1eed v\u1edbi 0, 1, 2, 3,.., 9 b\u1ea1n c\u00f3 th\u1ec3 th\u1eed d\u00f9ng h\u00e0m sau <code>is_numeric($r)<\/code> &#8211; n\u00f3 s\u1ebd x\u00e1c \u0111\u1ecbnh xem ph\u1ea7n t\u1eed \u0111\u00f3 c\u00f3 ph\u1ea3i l\u00e0 s\u1ed1 kh\u00f4ng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>X\u1eeda l\u00fd s\u1ed1 \u0111i\u1ec7n tho\u1ea1i c\u00f3 th\u1ec3 l\u00e0 y\u00eau c\u1ea7u quan tr\u1ecdng trong nhi\u1ec1u b\u00e0i to\u00e1n. \u0110\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng b\u00e0i to\u00e1n li\u00ean quan \u0111\u1ebfn con ng\u01b0\u1eddi, th\u00ed d\u1ee5 s\u1ed1 \u0111i\u1ec7n tho\u1ea1i nh\u00e2n vi\u00ean trong c\u00f4ng ty, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i kh\u00e1ch h\u00e0ng c\u1ee7a b\u1ea1n, s\u1ed1 \u0111i\u1ec7n tho\u1ea1i nh\u1eefng ng\u01b0\u1eddi b\u1ea1n mu\u1ed1n ch\u00e0o h\u00e0ng, s\u1ed1 \u0111i\u1ec7n &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],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Chu\u1ea9n ho\u00e1 d\u1eef li\u1ec7u s\u1ed1 \u0111i\u1ec7n tho\u1ea1i b\u1eb1ng PHP &#8226; 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