{"id":96552,"date":"2024-10-20T10:24:18","date_gmt":"2024-10-20T02:24:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96552\/"},"modified":"2024-10-20T10:24:19","modified_gmt":"2024-10-20T02:24:19","slug":"php%e8%83%bd%e5%90%a6%e5%af%a6%e7%8f%be%e5%90%8c%e6%99%82%e9%80%a3%e6%8e%a5%e5%85%a9%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-php%e5%90%8c%e6%99%82%e9%8f%88%e6%8e%a5%e5%85%a9%e5%80%8b%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96552\/","title":{"rendered":"php\u80fd\u5426\u5be6\u73fe\u540c\u6642\u9023\u63a5\u5169\u500b\u6578\u64da\u5eab\uff1f (php\u540c\u6642\u93c8\u63a5\u5169\u500b\u6578\u64da\u5eab\u55ce)"},"content":{"rendered":"<h1 id=\"php%e8%83%bd%e5%90%a6%e5%af%a6%e7%8f%be%e5%90%8c%e6%99%82%e9%80%a3%e6%8e%a5%e5%85%a9%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-bXZOXCyXaY\">PHP\u80fd\u5426\u5be6\u73fe\u540c\u6642\u9023\u63a5\u5169\u500b\u6578\u64da\u5eab\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u7db2\u7d61\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u7d93\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u8a31\u591a\u61c9\u7528\u7a0b\u5e8f\u9700\u8981\u5f9e\u4e0d\u540c\u7684\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6578\u64da\uff0c\u9019\u5c31\u5f15\u51fa\u4e86\u201cPHP\u80fd\u5426\u5be6\u73fe\u540c\u6642\u9023\u63a5\u5169\u500b\u6578\u64da\u5eab\uff1f\u201d\u9019\u500b\u554f\u984c\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e00\u4e3b\u984c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"php%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-bXZOXCyXaY\">PHP\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>PHP\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u5305\u62ecMySQL\u3001PostgreSQL\u3001SQLite\u7b49\u3002\u901a\u5e38\uff0c\u958b\u767c\u8005\u6703\u4f7f\u7528PHP\u7684\u5167\u5efa\u51fd\u6578\u6216\u64f4\u5c55\u4f86\u9023\u63a5\u548c\u64cd\u4f5c\u9019\u4e9b\u6578\u64da\u5eab\u3002\u6700\u5e38\u898b\u7684\u65b9\u5f0f\u662f\u4f7f\u7528MySQLi\u6216PDO\uff08PHP Data Objects\uff09\u4f86\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e5%90%8c%e6%99%82%e9%80%a3%e6%8e%a5%e5%85%a9%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8f%af%e8%a1%8c%e6%80%a7-bXZOXCyXaY\">\u540c\u6642\u9023\u63a5\u5169\u500b\u6578\u64da\u5eab\u7684\u53ef\u884c\u6027<\/h2>\n<p>PHP\u53ef\u4ee5\u540c\u6642\u9023\u63a5\u591a\u500b\u6578\u64da\u5eab\u3002\u9019\u610f\u5473\u8457\u958b\u767c\u8005\u53ef\u4ee5\u5728\u540c\u4e00\u500bPHP\u8173\u672c\u4e2d\uff0c\u4f7f\u7528\u4e0d\u540c\u7684\u9023\u63a5\u4f86\u64cd\u4f5c\u4e0d\u540c\u7684\u6578\u64da\u5eab\u3002\u9019\u5728\u9700\u8981\u5f9e\u591a\u500b\u6578\u64da\u6e90\u7372\u53d6\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u7279\u5225\u6709\u7528\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8mysqli%e9%80%a3%e6%8e%a5%e5%85%a9%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab-bXZOXCyXaY\">\u4f7f\u7528MySQLi\u9023\u63a5\u5169\u500b\u6578\u64da\u5eab<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528MySQLi\u64f4\u5c55\u540c\u6642\u9023\u63a5\u5169\u500bMySQL\u6578\u64da\u5eab\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\n\/\/ \u9023\u63a5\u7b2c\u4e00\u500b\u6578\u64da\u5eab\n$connection1 = new mysqli(\"localhost\", \"username1\", \"password1\", \"database1\");\n\n\/\/ \u6aa2\u67e5\u9023\u63a5\nif ($connection1-&gt;connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $connection1-&gt;connect_error);\n}\n\n\/\/ \u9023\u63a5\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\n$connection2 = new mysqli(\"localhost\", \"username2\", \"password2\", \"database2\");\n\n\/\/ \u6aa2\u67e5\u9023\u63a5\nif ($connection2-&gt;connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $connection2-&gt;connect_error);\n}\n\n\/\/ \u5f9e\u7b2c\u4e00\u500b\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u6578\u64da\n$result1 = $connection1-&gt;query(\"SELECT * FROM table1\");\nwhile ($row = $result1-&gt;fetch_assoc()) {\n    echo \"\u6578\u64da\u4f86\u81ea\u7b2c\u4e00\u500b\u6578\u64da\u5eab: \" . $row[\"column_name\"] . \"&lt;br&gt;\";\n}\n\n\/\/ \u5f9e\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u6578\u64da\n$result2 = $connection2-&gt;query(\"SELECT * FROM table2\");\nwhile ($row = $result2-&gt;fetch_assoc()) {\n    echo \"\u6578\u64da\u4f86\u81ea\u7b2c\u4e8c\u500b\u6578\u64da\u5eab: \" . $row[\"column_name\"] . \"&lt;br&gt;\";\n}\n\n\/\/ \u95dc\u9589\u9023\u63a5\n$connection1-&gt;close();\n$connection2-&gt;close();\n?&gt;<\/code><\/pre>\n<h3 id=\"%e4%bd%bf%e7%94%a8pdo%e9%80%a3%e6%8e%a5%e5%85%a9%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab-bXZOXCyXaY\">\u4f7f\u7528PDO\u9023\u63a5\u5169\u500b\u6578\u64da\u5eab<\/h3>\n<p>\u9664\u4e86MySQLi\uff0c\u958b\u767c\u8005\u9084\u53ef\u4ee5\u4f7f\u7528PDO\u4f86\u9023\u63a5\u591a\u500b\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PDO\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\ntry {\n    \/\/ \u9023\u63a5\u7b2c\u4e00\u500b\u6578\u64da\u5eab\n    $pdo1 = new PDO(\"mysql:host=localhost;dbname=database1\", \"username1\", \"password1\");\n    $pdo1-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n\n    \/\/ \u9023\u63a5\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\n    $pdo2 = new PDO(\"mysql:host=localhost;dbname=database2\", \"username2\", \"password2\");\n    $pdo2-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n\n    \/\/ \u5f9e\u7b2c\u4e00\u500b\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u6578\u64da\n    $stmt1 = $pdo1-&gt;query(\"SELECT * FROM table1\");\n    while ($row = $stmt1-&gt;fetch(PDO::FETCH_ASSOC)) {\n        echo \"\u6578\u64da\u4f86\u81ea\u7b2c\u4e00\u500b\u6578\u64da\u5eab: \" . $row[\"column_name\"] . \"&lt;br&gt;\";\n    }\n\n    \/\/ \u5f9e\u7b2c\u4e8c\u500b\u6578\u64da\u5eab\u4e2d\u67e5\u8a62\u6578\u64da\n    $stmt2 = $pdo2-&gt;query(\"SELECT * FROM table2\");\n    while ($row = $stmt2-&gt;fetch(PDO::FETCH_ASSOC)) {\n        echo \"\u6578\u64da\u4f86\u81ea\u7b2c\u4e8c\u500b\u6578\u64da\u5eab: \" . $row[\"column_name\"] . \"&lt;br&gt;\";\n    }\n} catch (PDOException $e) {\n    echo \"\u932f\u8aa4: \" . $e-&gt;getMessage();\n}\n\n\/\/ \u95dc\u9589\u9023\u63a5\n$pdo1 = null;\n$pdo2 = null;\n?&gt;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-bXZOXCyXaY\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u6bcf\u500b\u6578\u64da\u5eab\u7684\u9023\u63a5\u4fe1\u606f\u6b63\u78ba\u7121\u8aa4\u3002<\/li>\n<li>\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u6ce8\u610f\u6027\u80fd\u554f\u984c\uff0c\u907f\u514d\u540c\u6642\u67e5\u8a62\u904e\u591a\u6578\u64da\u3002<\/li>\n<li>\u5728\u4f7f\u7528\u591a\u500b\u6578\u64da\u5eab\u6642\uff0c\u8003\u616e\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bXZOXCyXaY\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0cPHP\u78ba\u5be6\u53ef\u4ee5\u5be6\u73fe\u540c\u6642\u9023\u63a5\u5169\u500b\u6216\u591a\u500b\u6578\u64da\u5eab\uff0c\u9019\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\u548c\u4fbf\u5229\u6027\u3002\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u4f7f\u7528MySQLi\u6216PDO\u4f86\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\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\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22PHP\u662f\u5426\u80fd\u540c\u6642\u9023\u63a5\u5169\u500b\u6578\u64da\u5eab\uff0c\u4e86\u89e3\u5be6\u73fe\u65b9\u6cd5\u53ca\u6ce8\u610f\u4e8b\u9805\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\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-96552","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96552","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=96552"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96552\/revisions"}],"predecessor-version":[{"id":96553,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96552\/revisions\/96553"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}