{"id":96622,"date":"2024-10-20T10:59:18","date_gmt":"2024-10-20T02:59:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96622\/"},"modified":"2024-10-20T10:59:19","modified_gmt":"2024-10-20T02:59:19","slug":"php%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e6%9c%80%e5%b0%8f%e5%80%bc-php%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%80%e5%b0%8f%e5%80%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96622\/","title":{"rendered":"php\u6578\u64da\u5eab\u67e5\u8a62\u6700\u5c0f\u503c (php\u6578\u64da\u5eab\u6700\u5c0f\u503c)"},"content":{"rendered":"<h1 id=\"php%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e6%9c%80%e5%b0%8f%e5%80%bc-php%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%80%e5%b0%8f%e5%80%bc-kKNoxKmojw\">PHP\u6578\u64da\u5eab\u67e5\u8a62\u6700\u5c0f\u503c (PHP\u6578\u64da\u5eab\u6700\u5c0f\u503c)<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u7db2\u9801\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u7121\u8ad6\u662f\u5f9e\u7528\u6236\u63d0\u4ea4\u7684\u8868\u55ae\u4e2d\u63d0\u53d6\u6578\u64da\uff0c\u9084\u662f\u5f9e\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u7279\u5b9a\u7684\u6578\u64da\uff0cPHP\u90fd\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\u4f86\u5be6\u73fe\u9019\u4e9b\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528PHP\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5c0f\u503c\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%e5%9f%ba%e7%a4%8e%e7%9f%a5%e8%ad%98-kKNoxKmojw\">\u6578\u64da\u5eab\u57fa\u790e\u77e5\u8b58<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u6211\u5011\u9700\u8981\u4e86\u89e3\u4e00\u4e9b\u57fa\u672c\u7684\u6578\u64da\u5eab\u6982\u5ff5\u3002\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u7d50\u69cb\u5316\u7684\u6578\u64da\u5b58\u5132\u7cfb\u7d71\uff0c\u901a\u5e38\u4f7f\u7528SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u4f86\u9032\u884c\u6578\u64da\u7684\u589e\u522a\u6539\u67e5\u3002\u6700\u5c0f\u503c\u67e5\u8a62\u662f\u6578\u64da\u5206\u6790\u4e2d\u5e38\u898b\u7684\u64cd\u4f5c\u4e4b\u4e00\uff0c\u901a\u5e38\u7528\u65bc\u7372\u53d6\u67d0\u4e00\u5217\u4e2d\u7684\u6700\u5c0f\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8sql%e6%9f%a5%e8%a9%a2%e6%9c%80%e5%b0%8f%e5%80%bc-kKNoxKmojw\">\u4f7f\u7528SQL\u67e5\u8a62\u6700\u5c0f\u503c<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528<strong>MIN()<\/strong>\u51fd\u6578\u4f86\u67e5\u8a62\u67d0\u4e00\u5217\u7684\u6700\u5c0f\u503c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684SQL\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT MIN(column_name) AS min_value FROM table_name;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c<code>column_name<\/code>\u662f\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6700\u5c0f\u503c\u7684\u5217\u540d\uff0c\u800c<code>table_name<\/code>\u5247\u662f\u6578\u64da\u8868\u7684\u540d\u7a31\u3002\u67e5\u8a62\u7d50\u679c\u5c07\u8fd4\u56de\u8a72\u5217\u7684\u6700\u5c0f\u503c\u3002<\/p>\n<h2 id=\"php%e5%af%a6%e7%8f%be%e6%9c%80%e5%b0%8f%e5%80%bc%e6%9f%a5%e8%a9%a2-kKNoxKmojw\">PHP\u5be6\u73fe\u6700\u5c0f\u503c\u67e5\u8a62<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u5c07\u5c55\u793a\u5982\u4f55\u5728PHP\u4e2d\u5be6\u73fe\u9019\u4e00\u67e5\u8a62\u3002\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u7136\u5f8c\u57f7\u884cSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u5b8c\u6574\u7684\u4ee3\u78bc\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\n\/\/ \u6578\u64da\u5eab\u9023\u63a5\u53c3\u6578\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: \" . $conn-&gt;connect_error);\n}\n\n\/\/ SQL\u67e5\u8a62\n$sql = \"SELECT MIN(column_name) AS min_value FROM table_name\";\n$result = $conn-&gt;query($sql);\n\n\/\/ \u8f38\u51fa\u7d50\u679c\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 \"\u6700\u5c0f\u503c: \" . $row[\"min_value\"];\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n\n\/\/ \u95dc\u9589\u9023\u63a5\n$conn-&gt;close();\n?&gt;<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u4e00\u500b\u5230\u6578\u64da\u5eab\u7684\u9023\u63a5\uff0c\u7136\u5f8c\u57f7\u884c\u4e86\u67e5\u8a62\u4ee5\u7372\u53d6\u6700\u5c0f\u503c\u3002\u6700\u5f8c\uff0c\u6211\u5011\u5c07\u7d50\u679c\u8f38\u51fa\u5230\u7db2\u9801\u4e0a\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-kKNoxKmojw\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u9023\u63a5\u53c3\u6578\u6b63\u78ba\u7121\u8aa4\u3002<\/li>\n<li>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u61c9\u8003\u616e\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u4f86\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<li>\u6839\u64da\u6578\u64da\u91cf\u7684\u5927\u5c0f\uff0c\u67e5\u8a62\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u5efa\u8b70\u5c0d\u5927\u578b\u6578\u64da\u8868\u9032\u884c\u9069\u7576\u7684\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kKNoxKmojw\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u672c\u6587\uff0c\u6211\u5011\u4e86\u89e3\u4e86\u5982\u4f55\u4f7f\u7528PHP\u548cSQL\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5c0f\u503c\u3002\u9019\u4e00\u64cd\u4f5c\u5728\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u751f\u6210\u4e2d\u975e\u5e38\u91cd\u8981\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u958b\u767c\u63d0\u4f9b\u66f4\u9ad8\u7684\u9748\u6d3b\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5982\u4f55\u4f7f\u7528PHP\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684\u6700\u5c0f\u503c\uff0c\u7c21\u5316\u6578\u64da\u8655\u7406\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\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-96622","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96622","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=96622"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96622\/revisions"}],"predecessor-version":[{"id":96623,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96622\/revisions\/96623"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}