{"id":96542,"date":"2024-10-20T10:19:17","date_gmt":"2024-10-20T02:19:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96542\/"},"modified":"2024-10-20T10:19:18","modified_gmt":"2024-10-20T02:19:18","slug":"php%e9%80%a3%e6%8e%a5mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%bb%a3%e7%a2%bc%e6%8f%8f%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96542\/","title":{"rendered":"php\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u4ee3\u78bc\u63cf\u8ff0"},"content":{"rendered":"<h1 id=\"php%e9%80%a3%e6%8e%a5mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e4%bb%a3%e7%a2%bc%e6%8f%8f%e8%bf%b0-aOiRkeqawe\">PHP\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u4ee3\u78bc\u63cf\u8ff0<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u7db2\u7d61\u958b\u767c\u4e2d\uff0cPHP\u548cMySQL\u7684\u7d44\u5408\u662f\u6700\u5e38\u898b\u7684\u6280\u8853\u4e4b\u4e00\u3002PHP\u662f\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u8173\u672c\u8a9e\u8a00\uff0c\u800cMySQL\u5247\u662f\u4e00\u500b\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528PHP\u9023\u63a5MySQL\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-aOiRkeqawe\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u60a8\u7684\u4f3a\u670d\u5668\u4e0a\u5df2\u5b89\u88ddPHP\u548cMySQL\u3002\u5927\u591a\u6578VPS\u4e3b\u6a5f\u90fd\u6703\u9810\u88dd\u9019\u4e9b\u8edf\u4ef6\uff0c\u60a8\u53ef\u4ee5\u901a\u904e\u547d\u4ee4\u884c\u6aa2\u67e5\u7248\u672c\uff1a<\/p>\n<pre><code>php -v\nmysql --version\n<\/code><\/pre>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8mysqli%e6%93%b4%e5%b1%95-aOiRkeqawe\">2. \u4f7f\u7528MySQLi\u64f4\u5c55<\/h2>\n<p>PHP\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u9023\u63a5MySQL\u6578\u64da\u5eab\uff0c\u5176\u4e2d\u6700\u5e38\u7528\u7684\u662fMySQLi\u64f4\u5c55\u3002MySQLi\u652f\u6301\u9762\u5411\u5c0d\u8c61\u548c\u904e\u7a0b\u5316\u7684\u7de8\u7a0b\u98a8\u683c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528MySQLi\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"2-1-%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-aOiRkeqawe\">2.1 \u9023\u63a5\u6578\u64da\u5eab<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5275\u5efa\u4e00\u500bPHP\u6587\u4ef6\uff0c\u7136\u5f8c\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>&lt;?php\n$servername = \"localhost\"; \/\/ \u4f3a\u670d\u5668\u540d\u7a31\n$username = \"username\"; \/\/ \u7528\u6236\u540d\n$password = \"password\"; \/\/ \u5bc6\u78bc\n$dbname = \"database_name\"; \/\/ \u6578\u64da\u5eab\u540d\u7a31\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: \" . $conn-&gt;connect_error);\n}\necho \"\u9023\u63a5\u6210\u529f\";\n?&gt;\n<\/code><\/pre>\n<h3 id=\"2-2-%e5%9f%b7%e8%a1%8c%e6%9f%a5%e8%a9%a2-aOiRkeqawe\">2.2 \u57f7\u884c\u67e5\u8a62<\/h3>\n<p>\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u60a8\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u67e5\u8a62\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\n$sql = \"SELECT id, name FROM users\";\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 \"id: \" . $row[\"id\"]. \" - Name: \" . $row[\"name\"]. \"&lt;br&gt;\";\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n?&gt;\n<\/code><\/pre>\n<h3 id=\"2-3-%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-aOiRkeqawe\">2.3 \u95dc\u9589\u9023\u63a5<\/h3>\n<p>\u5728\u5b8c\u6210\u6240\u6709\u64cd\u4f5c\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n<pre><code>&lt;?php\n$conn-&gt;close();\n?&gt;\n<\/code><\/pre>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8pdo%e6%93%b4%e5%b1%95-aOiRkeqawe\">3. \u4f7f\u7528PDO\u64f4\u5c55<\/h2>\n<p>\u9664\u4e86MySQLi\uff0c\u60a8\u9084\u53ef\u4ee5\u4f7f\u7528PDO\uff08PHP Data Objects\uff09\u4f86\u9023\u63a5MySQL\u6578\u64da\u5eab\u3002PDO\u63d0\u4f9b\u4e86\u4e00\u500b\u6578\u64da\u5eab\u62bd\u8c61\u5c64\uff0c\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528PDO\u9023\u63a5\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\ntry {\n    $conn = new PDO(\"mysql:host=$servername;dbname=$dbname\", $username, $password);\n    \/\/ \u8a2d\u7f6ePDO\u932f\u8aa4\u6a21\u5f0f\u70ba\u7570\u5e38\n    $conn-&gt;setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);\n    echo \"\u9023\u63a5\u6210\u529f\";\n} catch(PDOException $e) {\n    echo \"\u9023\u63a5\u5931\u6557: \" . $e-&gt;getMessage();\n}\n?&gt;\n<\/code><\/pre>\n<h2 id=\"4-%e5%ae%89%e5%85%a8%e6%80%a7%e8%80%83%e9%87%8f-aOiRkeqawe\">4. \u5b89\u5168\u6027\u8003\u91cf<\/h2>\n<p>\u5728\u9023\u63a5MySQL\u6578\u64da\u5eab\u6642\uff0c\u5b89\u5168\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u4f86\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<li>\u907f\u514d\u5728\u4ee3\u78bc\u4e2d\u786c\u7de8\u78bc\u6578\u64da\u5eab\u6191\u8b49\u3002<\/li>\n<li>\u5b9a\u671f\u66f4\u65b0\u60a8\u7684\u6578\u64da\u5eab\u548cPHP\u7248\u672c\u4ee5\u4fee\u88dc\u5b89\u5168\u6f0f\u6d1e\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-aOiRkeqawe\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528PHP\u9023\u63a5MySQL\u6578\u64da\u5eab\uff0c\u5305\u62ec\u4f7f\u7528MySQLi\u548cPDO\u5169\u7a2e\u65b9\u6cd5\u3002\u9019\u4e9b\u6280\u8853\u5728\u7db2\u7d61\u958b\u767c\u4e2d\u975e\u5e38\u91cd\u8981\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u3002\u82e5\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u4f3a\u670d\u5668\u4f86\u904b\u884c\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\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>\uff0c\u4ee5\u78ba\u4fdd\u60a8\u7684\u7db2\u7ad9\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528PHP\u9023\u63a5MySQL\u6578\u64da\u5eab\uff0c\u5305\u542b\u4ee3\u78bc\u793a\u4f8b\u548c\u6b65\u9a5f\uff0c\u8f15\u9b06\u5be6\u73fe\u6578\u64da\u64cd\u4f5c\u8207\u7ba1\u7406\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-96542","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96542","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=96542"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96542\/revisions"}],"predecessor-version":[{"id":96543,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96542\/revisions\/96543"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}