{"id":33,"date":"2015-01-21T19:06:00","date_gmt":"2015-01-21T19:06:00","guid":{"rendered":"https:\/\/kiencang.net\/2015\/01\/21\/tong-hop-cac-toan-tu-trong-php\/"},"modified":"2015-01-21T19:06:00","modified_gmt":"2015-01-21T19:06:00","slug":"tong-hop-cac-toan-tu-trong-php","status":"publish","type":"post","link":"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/","title":{"rendered":"T\u1ed5ng h\u1ee3p c\u00e1c to\u00e1n t\u1eed trong PHP"},"content":{"rendered":"\n<p>Tr\u01b0\u1edbc \u0111\u00e2y Ki\u1ebfn c\u00e0ng c\u00f3 vi\u1ebft m\u1ed9t b\u00e0i v\u1ec1 <a href=\"https:\/\/kiencang.net\/toan-tu-so-sanh-va-toan-tu-logic-trong-php\/\" target=\"_blank\" rel=\"noreferrer noopener\">to\u00e1n t\u1eed so s\u00e1nh v\u00e0 to\u00e1n t\u1eed logic trong PHP<\/a>, th\u1ef1c t\u1ebf PHP c\u00f2n nhi\u1ec1u to\u00e1n t\u1eed kh\u00e1c m\u00e0 h\u00f4m nay t\u00f4i s\u1ebd c\u00f9ng b\u1ea1n kh\u00e1m ph\u00e1 ti\u1ebfp theo c\u00e1ch \u0111\u1ea7y \u0111\u1ee7 to\u00e0n di\u1ec7n h\u01a1n.<\/p>\n\n\n\n<p>C\u1ee5 th\u1ec3, ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u c\u00e1c lo\u1ea1i to\u00e1n t\u1eed sau:<\/p>\n\n\n\n<ul><li>To\u00e1n t\u1eed s\u1ed1 h\u1ecdc<\/li><li>To\u00e1n t\u1eed g\u00e1n<\/li><li>To\u00e1n t\u1eed so s\u00e1nh<\/li><li>To\u00e1n t\u1eed t\u0103ng \/ gi\u1ea3m<\/li><li>To\u00e1n t\u1eed logic<\/li><li>To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn chu\u1ed7i<\/li><li>To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn m\u1ea3ng<\/li><\/ul>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_60 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6577d6940078f\" ><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input aria-label=\"Toggle\" aria-label=\"item-6577d6940078f\"  type=\"checkbox\" id=\"item-6577d6940078f\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/#Toan_tu_so_hoc\" title=\"To\u00e1n t\u1eed s\u1ed1 h\u1ecdc\">To\u00e1n t\u1eed s\u1ed1 h\u1ecdc<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/#Toan_tu_gan\" title=\"To\u00e1n t\u1eed g\u00e1n\">To\u00e1n t\u1eed g\u00e1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/#Toan_tu_so_sanh\" title=\"To\u00e1n t\u1eed so s\u00e1nh\">To\u00e1n t\u1eed so s\u00e1nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/#Toan_tu_logic\" title=\"To\u00e1n t\u1eed logic\">To\u00e1n t\u1eed logic<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/#Toan_tu_tang_va_giam\" title=\"To\u00e1n t\u1eed t\u0103ng v\u00e0 gi\u1ea3m\">To\u00e1n t\u1eed t\u0103ng v\u00e0 gi\u1ea3m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/#Toan_tu_lien_quan_den_chuoi\" title=\"To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn chu\u1ed7i\">To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn chu\u1ed7i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/#Toan_tu_lien_quan_den_mang\" title=\"To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn m\u1ea3ng\">To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn m\u1ea3ng<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toan_tu_so_hoc\"><\/span>To\u00e1n t\u1eed s\u1ed1 h\u1ecdc<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u00e2y l\u00e0 ki\u1ec3u to\u00e1n t\u1eed ch\u00fang ta hay g\u1eb7p nh\u1ea5t, n\u00f3 thao t\u00e1c tr\u00ean c\u00e1c con s\u1ed1, \u0111\u00f3 l\u00e0 nh\u1eefng ph\u00e9p to\u00e1n c\u1ed9ng, tr\u1eeb, nh\u00e2n chia h\u1ebft s\u1ee9c quen thu\u1ed9c.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>To\u00e1n t\u1eed<\/th><th>T\u00ean<\/th><th>V\u00ed d\u1ee5<\/th><th>M\u00f4 t\u1ea3<\/th><\/tr><tr><td>+<\/td><td>C\u1ed9ng<\/td><td>$x + $y<\/td><td>Bi\u1ebfn x c\u1ed9ng v\u1edbi bi\u1ebfn y<\/td><\/tr><tr><td>&#8211;<\/td><td>Tr\u1eeb<\/td><td>$x &#8211; $y<\/td><td>Bi\u1ebfn x tr\u1eeb bi\u1ebfn y<\/td><\/tr><tr><td>*<\/td><td>Nh\u00e2n<\/td><td>$x * $y<\/td><td>Bi\u1ebfn x nh\u00e2n bi\u1ebfn y<\/td><\/tr><tr><td>\/<\/td><td>Chia<\/td><td>$x \/ $y<\/td><td>Bi\u1ebfn x chia bi\u1ebfn y<\/td><\/tr><tr><td>%<\/td><td>L\u1ea5y ph\u1ea7n d\u01b0<\/td><td>$x % $y<\/td><td>L\u1ea5y ph\u1ea7n d\u01b0 c\u1ee7a k\u1ebft qu\u1ea3 bi\u1ebfn x chia cho bi\u1ebfn y<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toan_tu_gan\"><\/span>To\u00e1n t\u1eed g\u00e1n<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>To\u00e1n t\u1eed g\u00e1n s\u1eed d\u1ee5ng d\u1ea5u =, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 c\u00e1c to\u00e1n h\u1ea1ng b\u00ean tr\u00e1i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u1edbi gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c b\u00ean ph\u1ea3i.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>G\u00e1n<\/th><th>T\u01b0\u01a1ng \u0110\u01b0\u01a1ng<\/th><th>M\u00f4 t\u1ea3<\/th><\/tr><tr><td>x = y<\/td><td>x = y<\/td><td>To\u00e1n h\u1ea1ng b\u00ean tr\u00e1i \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp v\u1edbi gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ec3u th\u1ee9c b\u00ean ph\u1ea3i<\/td><\/tr><tr><td>x += y<\/td><td>x = x +&nbsp;y<\/td><td>C\u1ed9ng<\/td><\/tr><tr><td>x *= y<\/td><td>x = x * y<\/td><td>Tr\u1eeb<\/td><\/tr><tr><td>x \/= y<\/td><td>x = x \/ y<\/td><td>Chia<\/td><\/tr><tr><td>x %= y<\/td><td>x = x % y<\/td><td>L\u1ea5y ph\u1ea7n d\u01b0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toan_tu_so_sanh\"><\/span>To\u00e1n t\u1eed so s\u00e1nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>To\u00e1n t\u1eed<\/th><th>T\u00ean<\/th><th>V\u00ed d\u1ee5<\/th><th>K\u1ebft qu\u1ea3<\/th><\/tr><tr><td>==<\/td><td>B\u1eb1ng<\/td><td>$x == $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x b\u1eb1ng v\u1edbi bi\u1ebfn y<\/td><\/tr><tr><td>===<\/td><td>Gi\u1ed1ng h\u1ec7t nhau<\/td><td>$x === $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x b\u1eb1ng bi\u1ebfn y v\u00e0 c\u00f3 c\u00f9ng \u0111\u1ecbnh d\u1ea1ng<\/td><\/tr><tr><td>!=<\/td><td>Kh\u00f4ng b\u1eb1ng, kh\u00f4ng gi\u1ed1ng, kh\u00e1c<\/td><td>$x != $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x kh\u00e1c bi\u1ebfn y<\/td><\/tr><tr><td>&lt;&gt;<\/td><td>Kh\u00f4ng b\u1eb1ng, kh\u00f4ng gi\u1ed1ng, kh\u00e1c<\/td><td>$x &lt;&gt; $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x kh\u00e1c bi\u1ebfn y<\/td><\/tr><tr><td><span style=\"background-color: whitesmoke; color: #333333; font-family: Verdana; font-size: 15px; line-height: 21.4285717010498px;\">!==<\/span><\/td><td>Ho\u00e0n to\u00e0n kh\u00e1c nhau<\/td><td>$x !== $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x kh\u00e1c bi\u1ebfn y ho\u1eb7c no c\u00f3 2 \u0111\u1ecbnh d\u1ea1ng kh\u00e1c nhau<\/td><\/tr><tr><td>&gt;<\/td><td>L\u1edbn h\u01a1n<\/td><td>$x &gt; $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x l\u1edbn h\u01a1n bi\u1ebfn y<\/td><\/tr><tr><td>&lt;<\/td><td>Nh\u1ecf h\u01a1n<\/td><td>$x &lt; $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x nh\u1ecf h\u01a1n bi\u1ebfn y<\/td><\/tr><tr><td>&gt;=<\/td><td>L\u1edbn h\u01a1n ho\u1eb7c b\u1eb1ng<\/td><td>$x &gt;= $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x l\u1edbn h\u01a1n ho\u1eb7c b\u1eb1ng bi\u1ebfn y<\/td><\/tr><tr><td>&lt;=<\/td><td>Nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng<\/td><td>$x &lt;+ $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu bi\u1ebfn x nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng bi\u1ebfn y<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toan_tu_logic\"><\/span>To\u00e1n t\u1eed logic<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>To\u00e1n t\u1eed<\/th><th>T\u00ean<\/th><th>V\u00ed d\u1ee5<\/th><th>K\u1ebft qu\u1ea3<\/th><\/tr><tr><td>and<\/td><td>V\u00e0<\/td><td>$x and $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True khi v\u00e0 ch\u1ec9 khi x v\u00e0 y \u0111\u1ec1u \u0111\u00fang<\/td><\/tr><tr><td>or<\/td><td>Ho\u1eb7c<\/td><td>$x or $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu ch\u1ec9 c\u1ea7n m\u1ed9t trong hai bi\u1ebfn \u0111\u00fang<\/td><\/tr><tr><td>xor<\/td><td>Xor<\/td><td>$x xor $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu x ho\u1eb7c y \u0111\u00fang nh\u01b0ng kh\u00f4ng ph\u1ea3i c\u1ea3 hai<\/td><\/tr><tr><td>&amp;&amp;<\/td><td>V\u00e0<\/td><td>$x &amp;&amp; $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True khi v\u00e0 ch\u1ec9 khi x v\u00e0 y \u0111\u1ec1u \u0111\u00fang<\/td><\/tr><tr><td><span style=\"background-color: whitesmoke; color: #333333; font-family: Verdana; font-size: 15px; line-height: 21.4285717010498px;\">||<\/span><\/td><td>Ho\u1eb7c<\/td><td>$x || $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu ch\u1ec9 c\u1ea7n m\u1ed9t trong hai bi\u1ebfn \u0111\u00fang<\/td><\/tr><tr><td>!<\/td><td>Ph\u1ee7 \u0111\u1ecbnh<\/td><td>!$x<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu x l\u00e0 FALSE<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toan_tu_tang_va_giam\"><\/span>To\u00e1n t\u1eed t\u0103ng v\u00e0 gi\u1ea3m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>To\u00e1n t\u1eed<\/th><th>T\u00ean<\/th><th>M\u00f4 t\u1ea3<\/th><\/tr><tr><td>++$x<\/td><td>C\u1ed9ng 1 \u0111\u01a1n v\u1ecb<\/td><td>L\u1ea5y gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ebfn x c\u1ed9ng th\u00eam 1 r\u1ed3i g\u00e1n l\u1ea1i cho x<\/td><\/tr><tr><td>$x++<\/td><td>C\u1ed9ng 1 \u0111\u01a1n v\u1ecb<\/td><td>Tr\u1ea3 l\u1ea1i bi\u1ebfn $x, sau \u0111\u00f3 m\u1edbi c\u1ed9ng th\u00eam 1<\/td><\/tr><tr><td>&#8211;$x<\/td><td>Tr\u1eeb 1 \u0111\u01a1n v\u1ecb<\/td><td>L\u1ea5y gi\u00e1 tr\u1ecb c\u1ee7a bi\u1ebfn x tr\u1eeb \u0111i 1 r\u1ed3i g\u00e1n l\u1ea1i cho x<\/td><\/tr><tr><td>$x&#8211;<\/td><td>Tr\u1eeb 1 \u0111\u01a1n v\u1ecb<\/td><td>Tr\u1ea3 l\u1ea1i bi\u1ebfn $x, sau \u0111\u00f3 m\u1edbi tr\u1eeb \u0111i 1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toan_tu_lien_quan_den_chuoi\"><\/span>To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn chu\u1ed7i<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>To\u00e1n t\u1eed<\/th><th>T\u00ean<\/th><th>V\u00ed d\u1ee5<\/th><th>K\u1ebft qu\u1ea3<\/th><\/tr><tr><td>.<\/td><td>N\u1ed1i chu\u1ed7i<\/td><td>$text1.$text2<\/td><td>N\u1ed1i chu\u1ed7i text2 v\u00e0o sau chu\u1ed7i text1, tex1 v\u00e0 text2 v\u1eabn gi\u1eef nguy\u00ean gi\u00e1 tr\u1ecb<\/td><\/tr><tr><td>.=<\/td><td>N\u1ed1i v\u00e0 g\u00e1n<\/td><td>$text1.=$text2<\/td><td>N\u1ed1i chu\u1ed7i text2 v\u00e0o sau text1, text2 gi\u1eef nguy\u00ean gi\u00e1 tr\u1ecb, c\u00f2n text1 \u0111\u01b0\u1ee3c g\u00e1n gi\u00e1 tr\u1ecb c\u1ee7a chu\u1ed7i \u0111\u01b0\u1ee3c n\u1ed1i<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Toan_tu_lien_quan_den_mang\"><\/span>To\u00e1n t\u1eed li\u00ean quan \u0111\u1ebfn m\u1ea3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><th>To\u00e1n t\u1eed<\/th><th>T\u00ean<\/th><th>V\u00ed d\u1ee5<\/th><th>K\u1ebft qu\u1ea3<\/th><\/tr><tr><td>+<\/td><td>V\u00e0<\/td><td>$x +&nbsp;$y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 t\u1ed5ng h\u1ee3p hai m\u1ea3ng x v\u00e0 y<\/td><\/tr><tr><td>==<\/td><td>B\u1eb1ng<\/td><td>$x == $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu hai m\u1ea3ng x v\u00e0 y c\u00f3 c\u00f9ng c\u1eb7p kh\u00f3a v\u00e0 gi\u00e1 tr\u1ecb<\/td><\/tr><tr><td>===<\/td><td>Gi\u1ed1ng y nhau<\/td><td>$x === $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu hai m\u1ea3ng x v\u00e0 y c\u00f3 c\u00f9ng c\u1eb7p kh\u00f3a\/gi\u00e1 tr\u1ecb v\u00e0 m\u1ea3ng c\u00f3 c\u00f9ng th\u1ee9 t\u1ef1, \u0111\u1ecbnh d\u1ea1ng<\/td><\/tr><tr><td>!=<\/td><td>Kh\u00f4ng b\u1eb1ng<\/td><td>$x != $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True khi m\u1ea3ng x kh\u00f4ng b\u1eb1ng m\u1ea3ng y<\/td><\/tr><tr><td><span style=\"background-color: whitesmoke; color: #333333; font-family: Verdana; font-size: 15px; line-height: 21.4285717010498px;\">&lt;&gt;<\/span><\/td><td>Kh\u00f4ng b\u1eb1ng<\/td><td>$x &lt;&gt; $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True khi m\u1ea3ng x kh\u00f4ng b\u1eb1ng m\u1ea3ng y<\/td><\/tr><tr><td>!==<\/td><td>Kh\u00e1c nhau ho\u00e0n to\u00e0n<\/td><td>$x !== $y<\/td><td>Tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 True n\u1ebfu x kh\u00e1c ho\u00e0n y<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Tr\u01b0\u1edbc \u0111\u00e2y Ki\u1ebfn c\u00e0ng c\u00f3 vi\u1ebft m\u1ed9t b\u00e0i v\u1ec1 to\u00e1n t\u1eed so s\u00e1nh v\u00e0 to\u00e1n t\u1eed logic trong PHP, th\u1ef1c t\u1ebf PHP c\u00f2n nhi\u1ec1u to\u00e1n t\u1eed kh\u00e1c m\u00e0 h\u00f4m nay t\u00f4i s\u1ebd c\u00f9ng b\u1ea1n kh\u00e1m ph\u00e1 ti\u1ebfp theo c\u00e1ch \u0111\u1ea7y \u0111\u1ee7 to\u00e0n di\u1ec7n h\u01a1n. C\u1ee5 th\u1ec3, ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u c\u00e1c lo\u1ea1i to\u00e1n &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>T\u1ed5ng h\u1ee3p c\u00e1c to\u00e1n t\u1eed trong PHP &#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\/tong-hop-cac-toan-tu-trong-php\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u1ed5ng h\u1ee3p c\u00e1c to\u00e1n t\u1eed trong PHP &#8226; Ki\u1ebfn c\u00e0ng\" \/>\n<meta property=\"og:description\" content=\"Tr\u01b0\u1edbc \u0111\u00e2y Ki\u1ebfn c\u00e0ng c\u00f3 vi\u1ebft m\u1ed9t b\u00e0i v\u1ec1 to\u00e1n t\u1eed so s\u00e1nh v\u00e0 to\u00e1n t\u1eed logic trong PHP, th\u1ef1c t\u1ebf PHP c\u00f2n nhi\u1ec1u to\u00e1n t\u1eed kh\u00e1c m\u00e0 h\u00f4m nay t\u00f4i s\u1ebd c\u00f9ng b\u1ea1n kh\u00e1m ph\u00e1 ti\u1ebfp theo c\u00e1ch \u0111\u1ea7y \u0111\u1ee7 to\u00e0n di\u1ec7n h\u01a1n. C\u1ee5 th\u1ec3, ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u c\u00e1c lo\u1ea1i to\u00e1n &hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kiencang.net\/tong-hop-cac-toan-tu-trong-php\/\" \/>\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=\"2015-01-21T19:06:00+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=\"4 ph\u00fat\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"T\u1ed5ng h\u1ee3p c\u00e1c to\u00e1n t\u1eed trong PHP &#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\/tong-hop-cac-toan-tu-trong-php\/","og_locale":"vi_VN","og_type":"article","og_title":"T\u1ed5ng h\u1ee3p c\u00e1c to\u00e1n t\u1eed trong PHP &#8226; Ki\u1ebfn c\u00e0ng","og_description":"Tr\u01b0\u1edbc \u0111\u00e2y Ki\u1ebfn c\u00e0ng c\u00f3 vi\u1ebft m\u1ed9t b\u00e0i v\u1ec1 to\u00e1n t\u1eed so s\u00e1nh v\u00e0 to\u00e1n t\u1eed logic trong PHP, th\u1ef1c t\u1ebf PHP c\u00f2n nhi\u1ec1u to\u00e1n t\u1eed kh\u00e1c m\u00e0 h\u00f4m nay t\u00f4i s\u1ebd c\u00f9ng b\u1ea1n kh\u00e1m ph\u00e1 ti\u1ebfp theo c\u00e1ch \u0111\u1ea7y \u0111\u1ee7 to\u00e0n di\u1ec7n h\u01a1n. 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