{"id":96426,"date":"2024-10-20T09:19:21","date_gmt":"2024-10-20T01:19:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96426\/"},"modified":"2024-10-20T09:19:22","modified_gmt":"2024-10-20T01:19:22","slug":"php-%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e6%99%82%e9%96%93%e6%96%b9%e6%b3%95%e7%b0%a1%e4%bb%8b-php%e5%be%9e%e6%95%b8%e6%93%9a%e5%ba%ab%e5%8f%96%e6%99%82%e9%96%93","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96426\/","title":{"rendered":"PHP \u7372\u53d6\u6578\u64da\u5eab\u6642\u9593\u65b9\u6cd5\u7c21\u4ecb (php\u5f9e\u6578\u64da\u5eab\u53d6\u6642\u9593)"},"content":{"rendered":"<h1 id=\"php-%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e6%99%82%e9%96%93%e6%96%b9%e6%b3%95%e7%b0%a1%e4%bb%8b-RfOaLFRLDk\">PHP \u7372\u53d6\u6578\u64da\u5eab\u6642\u9593\u65b9\u6cd5\u7c21\u4ecb<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u7db2\u9801\u958b\u767c\u4e2d\uff0c\u6642\u9593\u548c\u65e5\u671f\u7684\u7ba1\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7121\u8ad6\u662f\u7528\u65bc\u986f\u793a\u7528\u6236\u7684\u8a3b\u518a\u6642\u9593\u3001\u6587\u7ae0\u7684\u767c\u4f48\u6642\u9593\uff0c\u9084\u662f\u8a18\u9304\u7cfb\u7d71\u7684\u64cd\u4f5c\u6642\u9593\uff0c\u6b63\u78ba\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6642\u9593\u6578\u64da\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528 PHP \u5f9e\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6642\u9593\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u548c\u6280\u5de7\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%99%82%e9%96%93%e6%a0%bc%e5%bc%8f-RfOaLFRLDk\">\u6578\u64da\u5eab\u4e2d\u7684\u6642\u9593\u683c\u5f0f<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u6642\u9593\u901a\u5e38\u4ee5\u7279\u5b9a\u7684\u683c\u5f0f\u5b58\u5132\u3002\u6700\u5e38\u898b\u7684\u683c\u5f0f\u662f <code>DATETIME<\/code> \u548c <code>TIMESTAMP<\/code>\u3002\u9019\u5169\u7a2e\u683c\u5f0f\u90fd\u53ef\u4ee5\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u4f46\u5b83\u5011\u7684\u884c\u70ba\u7565\u6709\u4e0d\u540c\uff1a<\/p>\n<ul>\n<li><strong>DATETIME<\/strong>: \u9019\u7a2e\u683c\u5f0f\u4e0d\u53d7\u6642\u5340\u5f71\u97ff\uff0c\u5b58\u5132\u7684\u6642\u9593\u662f\u56fa\u5b9a\u7684\u3002<\/li>\n<li><strong>TIMESTAMP<\/strong>: \u9019\u7a2e\u683c\u5f0f\u6703\u6839\u64da\u6642\u5340\u9032\u884c\u8abf\u6574\uff0c\u901a\u5e38\u7528\u65bc\u8a18\u9304\u4e8b\u4ef6\u7684\u767c\u751f\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8-php-%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e6%99%82%e9%96%93-RfOaLFRLDk\">\u4f7f\u7528 PHP \u7372\u53d6\u6578\u64da\u5eab\u6642\u9593<\/h2>\n<p>\u8981\u5f9e\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6642\u9593\u6578\u64da\uff0c\u9996\u5148\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 PHP \u548c MySQLi \u64f7\u53d6\u6642\u9593\u6578\u64da\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-RfOaLFRLDk\">1. \u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/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: \" . $conn-&gt;connect_error);\n}\n<\/code><\/pre>\n<h3 id=\"2-%e6%9f%a5%e8%a9%a2%e6%99%82%e9%96%93%e6%95%b8%e6%93%9a-RfOaLFRLDk\">2. \u67e5\u8a62\u6642\u9593\u6578\u64da<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u53ef\u4ee5\u57f7\u884c SQL \u67e5\u8a62\u4f86\u7372\u53d6\u6642\u9593\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u67e5\u8a62\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>\n$sql = \"SELECT created_at FROM users WHERE id = 1\";\n$result = $conn-&gt;query($sql);\n\nif ($result-&gt;num_rows &gt; 0) {\n    \/\/ \u8f38\u51fa\u6bcf\u884c\u6578\u64da\n    while($row = $result-&gt;fetch_assoc()) {\n        echo \"\u8a3b\u518a\u6642\u9593: \" . $row[\"created_at\"];\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n<\/code><\/pre>\n<h3 id=\"3-%e6%a0%bc%e5%bc%8f%e5%8c%96%e6%99%82%e9%96%93-RfOaLFRLDk\">3. \u683c\u5f0f\u5316\u6642\u9593<\/h3>\n<p>\u7372\u53d6\u5230\u7684\u6642\u9593\u6578\u64da\u901a\u5e38\u9700\u8981\u9032\u884c\u683c\u5f0f\u5316\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u986f\u793a\u7d66\u7528\u6236\u3002PHP \u63d0\u4f9b\u4e86 <code>date()<\/code> \u51fd\u6578\u4f86\u683c\u5f0f\u5316\u6642\u9593\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528\u5b83\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>\n$created_at = $row[\"created_at\"];\n$formatted_time = date(\"Y-m-d H:i:s\", strtotime($created_at));\necho \"\u683c\u5f0f\u5316\u5f8c\u7684\u8a3b\u518a\u6642\u9593: \" . $formatted_time;\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-RfOaLFRLDk\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u5f9e\u6578\u64da\u5eab\u7372\u53d6\u6642\u9593\u6578\u64da\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u4e2d\u7684\u6642\u9593\u683c\u5f0f\u6b63\u78ba\uff0c\u907f\u514d\u56e0\u683c\u5f0f\u4e0d\u4e00\u81f4\u800c\u5c0e\u81f4\u7684\u932f\u8aa4\u3002<\/li>\n<li>\u8003\u616e\u6642\u5340\u7684\u5f71\u97ff\uff0c\u7279\u5225\u662f\u5728\u5168\u7403\u5316\u7684\u61c9\u7528\u4e2d\u3002<\/li>\n<li>\u4f7f\u7528 <code>prepared statements<\/code> \u4f86\u9632\u6b62 SQL \u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-RfOaLFRLDk\">\u7e3d\u7d50<\/h2>\n<p>\u5f9e\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6642\u9593\u6578\u64da\u662f PHP \u958b\u767c\u4e2d\u7684\u4e00\u500b\u57fa\u672c\u64cd\u4f5c\u3002\u901a\u904e\u6b63\u78ba\u7684\u6578\u64da\u5eab\u9023\u63a5\u3001\u67e5\u8a62\u548c\u683c\u5f0f\u5316\uff0c\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u7ba1\u7406\u548c\u986f\u793a\u6642\u9593\u4fe1\u606f\u3002\u7121\u8ad6\u662f\u4f7f\u7528 <code>DATETIME<\/code> \u9084\u662f <code>TIMESTAMP<\/code>\uff0c\u7406\u89e3\u5b83\u5011\u7684\u7279\u6027\u5c07\u6709\u52a9\u65bc\u6211\u5011\u66f4\u597d\u5730\u8655\u7406\u6642\u9593\u6578\u64da\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u9084\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 PHP \u5f9e\u6578\u64da\u5eab\u7372\u53d6\u6642\u9593\u6578\u64da\uff0c\u7c21\u55ae\u6613\u61c2\u7684\u65b9\u6cd5\u4ecb\u7d39\uff0c\u52a9\u4f60\u8f15\u9b06\u8655\u7406\u6642\u9593\u4fe1\u606f\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-96426","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96426","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=96426"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96426\/revisions"}],"predecessor-version":[{"id":96427,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96426\/revisions\/96427"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}