{"id":2970,"date":"2025-03-18T23:52:22","date_gmt":"2025-03-18T15:52:22","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2970"},"modified":"2025-03-18T23:52:22","modified_gmt":"2025-03-18T15:52:22","slug":"php-%e8%bf%90%e7%ae%97%e7%ac%a6%ef%bc%88operators%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/18\/php-%e8%bf%90%e7%ae%97%e7%ac%a6%ef%bc%88operators%ef%bc%89\/","title":{"rendered":"PHP \u8fd0\u7b97\u7b26\uff08Operators\uff09"},"content":{"rendered":"\n

\u5728 PHP \u4e2d\uff0c\u8fd0\u7b97\u7b26\u7528\u4e8e\u6267\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u5982\u7b97\u672f\u8fd0\u7b97\u3001\u903b\u8f91\u8fd0\u7b97\u3001\u8d4b\u503c\u3001\u6bd4\u8f83\u7b49\u3002\u8fd0\u7b97\u7b26\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u51e0\u7c7b\uff1a<\/p>\n\n\n\n

\n\n\n\n

1. \u7b97\u672f\u8fd0\u7b97\u7b26\uff08Arithmetic Operators\uff09<\/strong><\/h2>\n\n\n\n

\u7528\u4e8e\u6267\u884c\u6570\u5b66\u8fd0\u7b97\u3002<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
+<\/code><\/td>\u52a0\u6cd5<\/td>$a + $b<\/code><\/td><\/tr>
-<\/code><\/td>\u51cf\u6cd5<\/td>$a - $b<\/code><\/td><\/tr>
*<\/code><\/td>\u4e58\u6cd5<\/td>$a * $b<\/code><\/td><\/tr>
\/<\/code><\/td>\u9664\u6cd5<\/td>$a \/ $b<\/code><\/td><\/tr>
%<\/code><\/td>\u53d6\u4f59<\/td>$a % $b<\/code><\/td><\/tr>
**<\/code><\/td>\u5e42\u8fd0\u7b97\uff08PHP 5.6+\uff09<\/td>$a ** $b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n

<?php\n$a = 10;\n$b = 5;\n\necho $a + $b; \/\/ \u8f93\u51fa: 15\necho $a - $b; \/\/ \u8f93\u51fa: 5\necho $a * $b; \/\/ \u8f93\u51fa: 50\necho $a \/ $b; \/\/ \u8f93\u51fa: 2\necho $a % $b; \/\/ \u8f93\u51fa: 0\necho $a ** $b; \/\/ \u8f93\u51fa: 100000\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
2. \u8d4b\u503c\u8fd0\u7b97\u7b26\uff08Assignment Operators\uff09<\/strong><\/h2>\n\n\n\n
\u7528\u4e8e\u5c06\u503c\u8d4b\u7ed9\u53d8\u91cf\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
=<\/code><\/td>\u8d4b\u503c<\/td>$a = $b<\/code><\/td><\/tr>
+=<\/code><\/td>\u52a0\u6cd5\u8d4b\u503c<\/td>$a += $b<\/code> (\u76f8\u5f53\u4e8e $a = $a + $b<\/code>)<\/td><\/tr>
-=<\/code><\/td>\u51cf\u6cd5\u8d4b\u503c<\/td>$a -= $b<\/code> (\u76f8\u5f53\u4e8e $a = $a - $b<\/code>)<\/td><\/tr>
*=<\/code><\/td>\u4e58\u6cd5\u8d4b\u503c<\/td>$a *= $b<\/code> (\u76f8\u5f53\u4e8e $a = $a * $b<\/code>)<\/td><\/tr>
\/=<\/code><\/td>\u9664\u6cd5\u8d4b\u503c<\/td>$a \/= $b<\/code> (\u76f8\u5f53\u4e8e $a = $a \/ $b<\/code>)<\/td><\/tr>
%=<\/code><\/td>\u53d6\u4f59\u8d4b\u503c<\/td>$a %= $b<\/code> (\u76f8\u5f53\u4e8e $a = $a % $b<\/code>)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
<?php\n$a = 10;\n$b = 5;\n\n$a += $b; \/\/ $a = $a + $b -> 15\necho $a; \/\/ \u8f93\u51fa: 15\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
3. \u6bd4\u8f83\u8fd0\u7b97\u7b26\uff08Comparison Operators\uff09<\/strong><\/h2>\n\n\n\n
\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u503c\uff0c\u5e76\u8fd4\u56de\u5e03\u5c14\u503c\uff08true<\/code> \u6216 false<\/code>\uff09\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
==<\/code><\/td>\u7b49\u4e8e<\/td>$a == $b<\/code><\/td><\/tr>
!=<\/code><\/td>\u4e0d\u7b49\u4e8e<\/td>$a != $b<\/code><\/td><\/tr>
><\/code><\/td>\u5927\u4e8e<\/td>$a > $b<\/code><\/td><\/tr>
<<\/code><\/td>\u5c0f\u4e8e<\/td>$a < $b<\/code><\/td><\/tr>
>=<\/code><\/td>\u5927\u4e8e\u7b49\u4e8e<\/td>$a >= $b<\/code><\/td><\/tr>
<=<\/code><\/td>\u5c0f\u4e8e\u7b49\u4e8e<\/td>$a <= $b<\/code><\/td><\/tr>
===<\/code><\/td>\u5168\u7b49\u4e8e\uff08\u503c\u548c\u7c7b\u578b\u90fd\u76f8\u7b49\uff09<\/td>$a === $b<\/code><\/td><\/tr>
!==<\/code><\/td>\u4e0d\u5168\u7b49\u4e8e\uff08\u503c\u6216\u7c7b\u578b\u4e0d\u7b49\uff09<\/td>$a !== $b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
<?php\n$a = 10;\n$b = 5;\n\nvar_dump($a == $b);  \/\/ \u8f93\u51fa: bool(false)\nvar_dump($a != $b);  \/\/ \u8f93\u51fa: bool(true)\nvar_dump($a > $b);   \/\/ \u8f93\u51fa: bool(true)\nvar_dump($a < $b);   \/\/ \u8f93\u51fa: bool(false)\nvar_dump($a === 10); \/\/ \u8f93\u51fa: bool(true)\nvar_dump($a !== \"10\"); \/\/ \u8f93\u51fa: bool(true)\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
4. \u903b\u8f91\u8fd0\u7b97\u7b26\uff08Logical Operators\uff09<\/strong><\/h2>\n\n\n\n
\u7528\u4e8e\u8fdb\u884c\u903b\u8f91\u64cd\u4f5c\uff0c\u901a\u5e38\u7528\u4e8e\u5e03\u5c14\u503c\u7684\u6761\u4ef6\u5224\u65ad\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
&&<\/code><\/td>\u903b\u8f91\u4e0e\uff08AND\uff09<\/td>$a && $b<\/code><\/td><\/tr>
||<\/code><\/td>\u903b\u8f91\u6216\uff08OR\uff09<\/td>$a || $b<\/code><\/td><\/tr>
!<\/code><\/td>\u903b\u8f91\u975e\uff08NOT\uff09<\/td>!$a<\/code><\/td><\/tr>
and<\/code><\/td>\u903b\u8f91\u4e0e\uff08\u4f4e\u4f18\u5148\u7ea7\uff09<\/td>$a and $b<\/code><\/td><\/tr>
or<\/code><\/td>\u903b\u8f91\u6216\uff08\u4f4e\u4f18\u5148\u7ea7\uff09<\/td>$a or $b<\/code><\/td><\/tr>
xor<\/code><\/td>\u903b\u8f91\u5f02\u6216<\/td>$a xor $b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
<?php\n$a = true;\n$b = false;\n\nvar_dump($a && $b); \/\/ \u8f93\u51fa: bool(false)\nvar_dump($a || $b); \/\/ \u8f93\u51fa: bool(true)\nvar_dump(!$a);      \/\/ \u8f93\u51fa: bool(false)\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
5. \u589e\u91cf\u548c\u51cf\u91cf\u8fd0\u7b97\u7b26\uff08Increment\/Decrement Operators\uff09<\/strong><\/h2>\n\n\n\n
\u7528\u4e8e\u589e\u52a0\u6216\u51cf\u5c11\u53d8\u91cf\u7684\u503c\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
++<\/code><\/td>\u81ea\u589e\uff08\u524d\u7f6e\u548c\u540e\u7f6e\uff09<\/td>$a++<\/code> \u6216 ++$a<\/code><\/td><\/tr>
--<\/code><\/td>\u81ea\u51cf\uff08\u524d\u7f6e\u548c\u540e\u7f6e\uff09<\/td>$a--<\/code> \u6216 --$a<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
<?php\n$a = 5;\n\necho $a++; \/\/ \u8f93\u51fa: 5 (\u5148\u4f7f\u7528\uff0c\u518d\u589e\u52a0)\necho $a;   \/\/ \u8f93\u51fa: 6\n\necho ++$a; \/\/ \u8f93\u51fa: 7 (\u5148\u589e\u52a0\uff0c\u518d\u4f7f\u7528)\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
6. \u5b57\u7b26\u4e32\u8fd0\u7b97\u7b26\uff08String Operators\uff09<\/strong><\/h2>\n\n\n\n
\u7528\u4e8e\u64cd\u4f5c\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
.<\/code><\/td>\u5b57\u7b26\u4e32\u8fde\u63a5<\/td>$a . $b<\/code><\/td><\/tr>
.=<\/code><\/td>\u5b57\u7b26\u4e32\u8fde\u63a5\u8d4b\u503c<\/td>$a .= $b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
<?php\n$a = \"Hello, \";\n$b = \"World!\";\necho $a . $b;  \/\/ \u8f93\u51fa: Hello, World!\n\n$a .= $b;  \/\/ \u8fde\u63a5\u5e76\u8d4b\u503c\necho $a;   \/\/ \u8f93\u51fa: Hello, World!\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
7. \u8d4b\u503c\u8fd0\u7b97\u7b26\uff08Array Operators\uff09<\/strong><\/h2>\n\n\n\n
\u7528\u4e8e\u64cd\u4f5c\u6570\u7ec4\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
+<\/code><\/td>\u6570\u7ec4\u5408\u5e76<\/td>$a + $b<\/code><\/td><\/tr>
==<\/code><\/td>\u6570\u7ec4\u76f8\u7b49\uff08\u503c\u76f8\u7b49\uff09<\/td>$a == $b<\/code><\/td><\/tr>
===<\/code><\/td>\u6570\u7ec4\u5168\u7b49\uff08\u503c\u548c\u952e\u90fd\u76f8\u7b49\uff09<\/td>$a === $b<\/code><\/td><\/tr>
!=<\/code><\/td>\u6570\u7ec4\u4e0d\u7b49<\/td>$a != $b<\/code><\/td><\/tr>
!==<\/code><\/td>\u6570\u7ec4\u4e0d\u5168\u7b49<\/td>$a !== $b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
<?php\n$a = [1, 2];\n$b = [2, 3];\n\nvar_dump($a + $b);   \/\/ \u5408\u5e76\u6570\u7ec4\uff0c\u8f93\u51fa: array(1, 2, 3)\nvar_dump($a == $b);  \/\/ \u6570\u7ec4\u76f8\u7b49\uff0c\u8f93\u51fa: bool(false)\nvar_dump($a === $b); \/\/ \u6570\u7ec4\u5168\u7b49\uff0c\u8f93\u51fa: bool(false)\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
8. \u6761\u4ef6\u8fd0\u7b97\u7b26\uff08\u4e09\u5143\u8fd0\u7b97\u7b26\uff09<\/strong><\/h2>\n\n\n\n
\u4e09\u5143\u8fd0\u7b97\u7b26\u662f PHP \u4e2d\u7684\u4e00\u4e2a\u7b80\u6d01\u7684\u6761\u4ef6\u5224\u65ad\u8fd0\u7b97\u7b26\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
? :<\/code><\/td>\u4e09\u5143\u8fd0\u7b97\u7b26\uff08\u6761\u4ef6\u8868\u8fbe\u5f0f\uff09<\/td>condition ? expr1 : expr2<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/strong><\/p>\n\n\n\n
<?php\n$a = 5;\necho ($a > 3) ? \"Greater than 3\" : \"Less than or equal to 3\";  \/\/ \u8f93\u51fa: Greater than 3\n?><\/code><\/pre>\n\n\n\n
\n\n\n\n
9. \u5176\u5b83\u8fd0\u7b97\u7b26<\/strong><\/h2>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
.<\/code><\/td>\u5b57\u7b26\u4e32\u8fde\u63a5\u8fd0\u7b97\u7b26<\/td>$a . $b<\/code><\/td><\/tr>
[]<\/code><\/td>\u6570\u7ec4\u5143\u7d20\u8bbf\u95ee\u8fd0\u7b97\u7b26<\/td>$a[] = $b<\/code><\/td><\/tr>
-><\/code><\/td>\u5bf9\u8c61\u6210\u5458\u8bbf\u95ee\u8fd0\u7b97\u7b26<\/td>$object->method()<\/code><\/td><\/tr>
[]<\/code><\/td>\u6570\u7ec4\u952e\u8bbf\u95ee\u8fd0\u7b97\u7b26<\/td>$array['key']<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n
\u603b\u7ed3<\/strong><\/h2>\n\n\n\n
    \n
  • PHP \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u8fd0\u7b97\u7b26\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\u95f4\u6267\u884c\u591a\u79cd\u64cd\u4f5c\u3002<\/li>\n\n\n\n
  • \u7b97\u672f\u8fd0\u7b97\u7b26<\/strong>\u7528\u4e8e\u57fa\u672c\u7684\u6570\u5b66\u8fd0\u7b97\uff0c\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/strong>\u7528\u4e8e\u6bd4\u8f83\u6570\u503c\u6216\u5b57\u7b26\u4e32\uff0c\u903b\u8f91\u8fd0\u7b97\u7b26<\/strong>\u7528\u4e8e\u5e03\u5c14\u503c\u7684\u64cd\u4f5c\uff0c\u8d4b\u503c\u8fd0\u7b97\u7b26<\/strong>\u7528\u4e8e\u4e3a\u53d8\u91cf\u8d4b\u503c\uff0c\u5b57\u7b26\u4e32\u8fd0\u7b97\u7b26<\/strong>\u7528\u4e8e\u8fde\u63a5\u5b57\u7b26\u4e32\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n
    \u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728 PHP \u4e2d\uff0c\u8fd0\u7b97\u7b26\u7528\u4e8e\u6267\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u5982\u7b97\u672f\u8fd0\u7b97\u3001\u903b\u8f91\u8fd0\u7b97\u3001\u8d4b\u503c\u3001\u6bd4\u8f83\u7b49\u3002\u8fd0\u7b97\u7b26\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u51e0\u7c7b\uff1a 1. \u7b97 […]<\/p>\n","protected":false},"author":1,"featured_media":2971,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"class_list":["post-2970","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2970","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2970"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2970\/revisions"}],"predecessor-version":[{"id":2972,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2970\/revisions\/2972"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/2971"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}