{"id":191566,"date":"2024-11-12T16:59:20","date_gmt":"2024-11-12T08:59:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/191566\/"},"modified":"2024-11-12T16:59:22","modified_gmt":"2024-11-12T08:59:22","slug":"%e8%a9%b3%e8%a7%a3php%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e6%a0%bc%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%96%b9%e6%b3%95-php%e6%80%8e%e9%ba%bc%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/191566\/","title":{"rendered":"\u8a73\u89e3PHP\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u6578\u64da\u985e\u578b\u65b9\u6cd5 (php\u600e\u9ebc\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u6578\u64da\u985e\u578b)"},"content":{"rendered":"<h1 id=\"%e8%a9%b3%e8%a7%a3php%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e6%a0%bc%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%96%b9%e6%b3%95-kXVNqAOljT\">\u8a73\u89e3PHP\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u6578\u64da\u985e\u578b\u65b9\u6cd5<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u7db2\u7d61\u61c9\u7528\u4e2d\uff0cPHP\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u4f3a\u670d\u5668\u7aef\u8173\u672c\u8a9e\u8a00\uff0c\u7d93\u5e38\u88ab\u7528\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u7121\u8ad6\u662f\u5efa\u7acb\u52d5\u614b\u7db2\u7ad9\u9084\u662f\u958b\u767cWeb\u61c9\u7528\uff0c\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u7684\u6578\u64da\u985e\u578b\u90fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u6280\u80fd\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528PHP\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u7684\u6578\u64da\u985e\u578b\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e6%a0%bc%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-kXVNqAOljT\">\u6578\u64da\u5eab\u8868\u683c\u7684\u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>\u5728\u958b\u59cb\u67e5\u8a62\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u4e86\u89e3\u6578\u64da\u5eab\u4e2d\u5e38\u898b\u7684\u6578\u64da\u985e\u578b\u3002\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff08\u5982MySQL\u3001PostgreSQL\u7b49\uff09\u53ef\u80fd\u6703\u6709\u4e0d\u540c\u7684\u6578\u64da\u985e\u578b\uff0c\u4f46\u5927\u81f4\u4e0a\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u985e\uff1a<\/p>\n<ul>\n<li><strong>\u6574\u6578\u985e\u578b\uff1a<\/strong>\u5982 INT\u3001TINYINT\u3001BIGINT \u7b49\u3002<\/li>\n<li><strong>\u6d6e\u9ede\u6578\u985e\u578b\uff1a<\/strong>\u5982 FLOAT\u3001DOUBLE \u7b49\u3002<\/li>\n<li><strong>\u5b57\u7b26\u4e32\u985e\u578b\uff1a<\/strong>\u5982 VARCHAR\u3001TEXT\u3001CHAR \u7b49\u3002<\/li>\n<li><strong>\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\uff1a<\/strong>\u5982 DATE\u3001DATETIME\u3001TIMESTAMP \u7b49\u3002<\/li>\n<li><strong>\u5e03\u723e\u985e\u578b\uff1a<\/strong>\u5982 BOOLEAN\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8php%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e6%a0%bc%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-kXVNqAOljT\">\u4f7f\u7528PHP\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728PHP\u4e2d\uff0c\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u7684\u6578\u64da\u985e\u578b\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528SQL\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PHP\u548cMySQLi\u64f4\u5c55\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u6578\u64da\u985e\u578b\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e9%80%a3%e6%8e%a5%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-kXVNqAOljT\">1. \u9023\u63a5\u5230\u6578\u64da\u5eab<\/h3>\n<pre><code>\n$servername = \"localhost\";\n$username = \"username\";\n$password = \"password\";\n$dbname = \"database_name\";\n\n\/\/ \u5275\u5efa\u9023\u63a5\n$conn = new mysqli($servername, $username, $password, $dbname);\n\n\/\/ \u6aa2\u67e5\u9023\u63a5\nif ($conn-&gt;connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $conn-&gt;connect_error);\n}\n<\/code><\/pre>\n<h3 id=\"2-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e8%a1%a8%e7%9a%84%e7%b5%90%e6%a7%8b-kXVNqAOljT\">2. \u67e5\u8a62\u6578\u64da\u8868\u7684\u7d50\u69cb<\/h3>\n<p>\u8981\u67e5\u8a62\u6578\u64da\u8868\u7684\u7d50\u69cb\uff0c\u53ef\u4ee5\u4f7f\u7528 SQL \u7684 <code>SHOW COLUMNS<\/code> \u8a9e\u53e5\u3002\u9019\u5c07\u8fd4\u56de\u8868\u4e2d\u6bcf\u4e00\u5217\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u6578\u64da\u985e\u578b\u3002<\/p>\n<pre><code>\n$sql = \"SHOW COLUMNS FROM your_table_name\";\n$result = $conn-&gt;query($sql);\n\nif ($result-&gt;num_rows &gt; 0) {\n    \/\/ \u8f38\u51fa\u6bcf\u4e00\u884c\u7684\u6578\u64da\n    while($row = $result-&gt;fetch_assoc()) {\n        echo \"\u6b04\u4f4d: \" . $row[\"Field\"]. \" - \u6578\u64da\u985e\u578b: \" . $row[\"Type\"]. \"<br>\";\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n<\/code><\/pre>\n<h3 id=\"3-%e9%97%9c%e9%96%89%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-kXVNqAOljT\">3. \u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<pre><code>\n$conn-&gt;close();\n<\/code><\/pre>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e8%a1%a8%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-kXVNqAOljT\">\u793a\u4f8b\uff1a\u67e5\u8a62\u6578\u64da\u8868\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528PHP\u67e5\u8a62\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u6578\u64da\u8868\u7684\u6578\u64da\u985e\u578b\uff1a<\/p>\n<pre><code>\n$servername = \"localhost\";\n$username = \"username\";\n$password = \"password\";\n$dbname = \"database_name\";\n\n$conn = new mysqli($servername, $username, $password, $dbname);\n\nif ($conn-&gt;connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $conn-&gt;connect_error);\n}\n\n$sql = \"SHOW COLUMNS FROM users\";\n$result = $conn-&gt;query($sql);\n\nif ($result-&gt;num_rows &gt; 0) {\n    while($row = $result-&gt;fetch_assoc()) {\n        echo \"\u6b04\u4f4d: \" . $row[\"Field\"]. \" - \u6578\u64da\u985e\u578b: \" . $row[\"Type\"]. \"<br>\";\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n\n$conn-&gt;close();\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-kXVNqAOljT\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u7684\u4ecb\u7d39\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\uff0c\u4f7f\u7528PHP\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u7684\u6578\u64da\u985e\u578b\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\u3002\u638c\u63e1\u9019\u4e00\u6280\u80fd\u4e0d\u50c5\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u6578\u64da\u7d50\u69cb\uff0c\u9084\u80fd\u5728\u958b\u767c\u904e\u7a0b\u4e2d\u63d0\u9ad8\u6548\u7387\u3002\u7121\u8ad6\u662f\u4f7f\u7528MySQL\u9084\u662f\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u4e86\u89e3\u5982\u4f55\u67e5\u8a62\u6578\u64da\u985e\u578b\u90fd\u662f\u4e00\u9805\u57fa\u672c\u800c\u91cd\u8981\u7684\u6280\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Web\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528PHP\u67e5\u8a62\u6578\u64da\u5eab\u8868\u683c\u7684\u6578\u64da\u985e\u578b\uff0c\u638c\u63e1\u6709\u6548\u7684\u65b9\u6cd5\u548c\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u80fd\u529b\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-191566","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191566","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=191566"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191566\/revisions"}],"predecessor-version":[{"id":191567,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/191566\/revisions\/191567"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=191566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=191566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=191566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}