{"id":96566,"date":"2024-10-20T10:31:19","date_gmt":"2024-10-20T02:31:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96566\/"},"modified":"2024-10-20T10:31:19","modified_gmt":"2024-10-20T02:31:19","slug":"php%e5%a6%82%e4%bd%95%e8%ae%80%e5%8f%96%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-php%e6%80%8e%e9%ba%bc%e8%ae%80%e5%8f%96%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96566\/","title":{"rendered":"php\u5982\u4f55\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab\uff1f (php\u600e\u9ebc\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"php%e5%a6%82%e4%bd%95%e8%ae%80%e5%8f%96%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-ujRXyZFtOY\">PHP\u5982\u4f55\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab\uff1f<\/h1>\n<p>\u5728\u73fe\u4ee3\u7684\u7db2\u9801\u958b\u767c\u4e2d\uff0c\u4f7f\u7528PHP\u4f86\u64cd\u4f5c\u6578\u64da\u5eab\u662f\u975e\u5e38\u666e\u904d\u7684\u9700\u6c42\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u8907\u96dc\u6027\u589e\u52a0\uff0c\u958b\u767c\u8005\u7d93\u5e38\u9700\u8981\u5f9e\u591a\u500b\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u6578\u64da\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528PHP\u4f86\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e8%ae%80%e5%8f%96%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-ujRXyZFtOY\">\u70ba\u4ec0\u9ebc\u9700\u8981\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab\uff1f<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u61c9\u7528\u7a0b\u5e8f\u53ef\u80fd\u9700\u8981\u5f9e\u4e0d\u540c\u7684\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u4e0d\u540c\u7684\u6578\u64da\u5eab\u53ef\u80fd\u5b58\u5132\u4e0d\u540c\u985e\u578b\u7684\u6578\u64da\uff0c\u4f8b\u5982\u7528\u6236\u4fe1\u606f\u548c\u7522\u54c1\u4fe1\u606f\u3002<\/li>\n<li>\u5728\u5fae\u670d\u52d9\u67b6\u69cb\u4e2d\uff0c\u6bcf\u500b\u670d\u52d9\u53ef\u80fd\u64c1\u6709\u81ea\u5df1\u7684\u6578\u64da\u5eab\u3002<\/li>\n<li>\u6578\u64da\u5eab\u7684\u5206\u5340\u548c\u5206\u7247\u6280\u8853\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u5206\u6563\u5728\u591a\u500b\u6578\u64da\u5eab\u4e2d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8pdo%e9%80%a3%e6%8e%a5%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab-ujRXyZFtOY\">\u4f7f\u7528PDO\u9023\u63a5\u591a\u500b\u6578\u64da\u5eab<\/h2>\n<p>PHP\u7684PDO\uff08PHP Data Objects\uff09\u64f4\u5c55\u63d0\u4f9b\u4e86\u4e00\u7a2e\u5b89\u5168\u4e14\u9748\u6d3b\u7684\u65b9\u5f0f\u4f86\u9023\u63a5\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528PDO\u9023\u63a5\u591a\u500b\u6578\u64da\u5eab\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\n\/\/ \u6578\u64da\u5eab\u914d\u7f6e\n$db1_config = [\n    'host' =&gt; 'localhost',\n    'dbname' =&gt; 'database1',\n    'user' =&gt; 'user1',\n    'pass' =&gt; 'password1'\n];\n\n$db2_config = [\n    'host' =&gt; 'localhost',\n    'dbname' =&gt; 'database2',\n    'user' =&gt; 'user2',\n    'pass' =&gt; 'password2'\n];\n\n\/\/ \u9023\u63a5\u5230\u7b2c\u4e00\u500b\u6578\u64da\u5eab\ntry {\n    $db1 = new PDO(\"mysql:host={$db1_config['host']};dbname={$db1_config['dbname']}\", $db1_config['user'], $db1_config['pass']);\n    $db1-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n} catch (PDOException $e) {\n    echo \"\u9023\u63a5\u5230\u6578\u64da\u5eab1\u5931\u6557: \" . $e-&gt;getMessage();\n}\n\n\/\/ \u9023\u63a5\u5230\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\ntry {\n    $db2 = new PDO(\"mysql:host={$db2_config['host']};dbname={$db2_config['dbname']}\", $db2_config['user'], $db2_config['pass']);\n    $db2-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n} catch (PDOException $e) {\n    echo \"\u9023\u63a5\u5230\u6578\u64da\u5eab2\u5931\u6557: \" . $e-&gt;getMessage();\n}\n?&gt;<\/code><\/pre>\n<h2 id=\"%e5%be%9e%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e8%ae%80%e5%8f%96%e6%95%b8%e6%93%9a-ujRXyZFtOY\">\u5f9e\u591a\u500b\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u6578\u64da<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u591a\u500b\u6578\u64da\u5eab\uff0c\u5c31\u53ef\u4ee5\u5f9e\u4e2d\u8b80\u53d6\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u5f9e\u5169\u500b\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\n\/\/ \u5f9e\u7b2c\u4e00\u500b\u6578\u64da\u5eab\u8b80\u53d6\u6578\u64da\n$query1 = $db1-&gt;query(\"SELECT * FROM users\");\n$users = $query1-&gt;fetchAll(PDO::FETCH_ASSOC);\n\n\/\/ \u5f9e\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\u8b80\u53d6\u6578\u64da\n$query2 = $db2-&gt;query(\"SELECT * FROM products\");\n$products = $query2-&gt;fetchAll(PDO::FETCH_ASSOC);\n\n\/\/ \u8f38\u51fa\u7d50\u679c\necho \"&lt;h2&gt;\u7528\u6236\u5217\u8868&lt;\/h2&gt;\";\nforeach ($users as $user) {\n    echo \"\u7528\u6236\u540d: \" . $user['username'] . \"&lt;br&gt;\";\n}\n\necho \"&lt;h2&gt;\u7522\u54c1\u5217\u8868&lt;\/h2&gt;\";\nforeach ($products as $product) {\n    echo \"\u7522\u54c1\u540d: \" . $product['product_name'] . \"&lt;br&gt;\";\n}\n?&gt;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-ujRXyZFtOY\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u9023\u63a5\u4fe1\u606f\u6b63\u78ba\u7121\u8aa4\u3002<\/li>\n<li>\u8003\u616e\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u8de8\u6578\u64da\u5eab\u64cd\u4f5c\u6642\u3002<\/li>\n<li>\u4f7f\u7528\u9069\u7576\u7684\u932f\u8aa4\u8655\u7406\u6a5f\u5236\uff0c\u4ee5\u4fbf\u5728\u9023\u63a5\u6216\u67e5\u8a62\u5931\u6557\u6642\u80fd\u5920\u6355\u7372\u7570\u5e38\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ujRXyZFtOY\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528PHP\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u5c24\u5176\u662f\u5728\u8907\u96dc\u7684\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u901a\u904e\u4f7f\u7528PDO\u64f4\u5c55\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u9023\u63a5\u548c\u64cd\u4f5c\u591a\u500b\u6578\u64da\u5eab\u3002\u9019\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u7684\u9748\u6d3b\u6027\uff0c\u9084\u80fd\u5920\u66f4\u597d\u5730\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u63d0\u5347\u60a8\u7684\u61c9\u7528\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728PHP\u4e2d\u540c\u6642\u8b80\u53d6\u591a\u500b\u6578\u64da\u5eab\uff0c\u638c\u63e1\u9023\u63a5\u3001\u67e5\u8a62\u548c\u6578\u64da\u6574\u5408\u7684\u6280\u5de7\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\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-96566","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96566","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=96566"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96566\/revisions"}],"predecessor-version":[{"id":96567,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96566\/revisions\/96567"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}