{"id":47130,"date":"2024-12-02T11:55:48","date_gmt":"2024-12-02T03:55:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/47130\/"},"modified":"2024-12-02T11:55:48","modified_gmt":"2024-12-02T03:55:48","slug":"php-%e5%87%bd%e6%95%b0%e5%a6%82%e4%bd%95%e4%b8%8e-sql-%e4%ba%a4%e4%ba%92","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/47130\/","title":{"rendered":"PHP \u51fd\u6570\u5982\u4f55\u4e0e SQL \u4ea4\u4e92"},"content":{"rendered":"

<\/b> <\/p>\n

PHP \u51fd\u6570\u5982\u4f55\u4e0e SQL \u4ea4\u4e92<\/h1>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300aPHP \u51fd\u6570\u5982\u4f55\u4e0e SQL \u4ea4\u4e92\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0\u6587\u7ae0<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

PHP \u63d0\u4f9b\u4e00\u7cfb\u5217\u51fd\u6570\u7528\u4e8e\u4e0e SQL \u6570\u636e\u5e93\u4ea4\u4e92\uff1a\u4f7f\u7528 mysqli_connect \u8fde\u63a5\u5230\u6570\u636e\u5e93\u3002\u4f7f\u7528 mysqli_query \u6267\u884c SQL \u67e5\u8be2\u3002\u4f7f\u7528\u4ee5\u4e0b\u51fd\u6570\u4e4b\u4e00\u5904\u7406\u67e5\u8be2\u7ed3\u679c\uff1amysqli_fetch_row\uff08\u4ee5\u5173\u8054\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u5355\u884c\u7ed3\u679c\uff09mysqli_fetch_assoc\uff08\u4ee5\u5173\u8054\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u5355\u884c\u7ed3\u679c\uff0c\u952e\u540d\u4e3a\u5b57\u6bb5\u540d\uff09mysqli_fetch_all\uff08\u4ee5\u5173\u8054\u6570\u7ec4\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u6240\u6709\u7ed3\u679c\uff09\u4f7f\u7528 mysqli_query \u63d2\u5165\u6570\u636e\u3002\u4f7f\u7528 mysqli_close \u5173\u95ed\u8fde\u63a5\u3002<\/p>\n

\"PHP<\/p>\n

PHP \u51fd\u6570\u4e0e SQL \u4ea4\u4e92<\/strong><\/p>\n

PHP \u63d0\u4f9b\u4e86\u8bb8\u591a\u51fd\u6570\u7528\u4e8e\u4e0e SQL \u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\uff0c\u5305\u62ec\u8fde\u63a5\u3001\u67e5\u8be2\u548c\u6570\u636e\u64cd\u4f5c\u3002<\/p>\n

\u8fde\u63a5\u5230\u6570\u636e\u5e93<\/strong><\/p>\n

\u4ee5\u4e0b\u4ee3\u7801\u4f7f\u7528 mysqli_connect<\/code> \u51fd\u6570\u8fde\u63a5\u5230 MySQL \u6570\u636e\u5e93\uff1a<\/p>\n

$servername = \"localhost\";\n$username = \"username\";\n$password = \"password\";\n$dbname = \"database\";\n\n\/\/ \u521b\u5efa\u4e00\u4e2a MySQL \u8fde\u63a5\n$conn = mysqli_connect($servername, $username, $password, $dbname);\n\n\/\/ \u68c0\u6d4b\u8fde\u63a5\u9519\u8bef\nif (!$conn) {\n    die(\"\u8fde\u63a5\u5931\u8d25: \" . mysqli_connect_error());\n}<\/pre>\n
\u6267\u884c SQL \u67e5\u8be2<\/strong><\/p>\n
\u4f7f\u7528 mysqli_query<\/code> \u51fd\u6570\u6267\u884c SQL \u67e5\u8be2\uff1a<\/p>\n
\/\/ \u6267\u884c\u4e00\u4e2a\u67e5\u8be2\n$sql = \"SELECT * FROM users\";\n$result = mysqli_query($conn, $sql);\n\n\/\/ \u68c0\u6d4b\u67e5\u8be2\u9519\u8bef\nif (!$result) {\n    die(\"\u67e5\u8be2\u5931\u8d25: \" . mysqli_error($conn));\n}<\/pre>\n
\u5904\u7406\u67e5\u8be2\u7ed3\u679c<\/strong><\/p>\n
\u5904\u7406\u67e5\u8be2\u7ed3\u679c\u7684\u5e38\u89c1\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n
    \n
  • mysqli_fetch_row<\/code>\uff1a\u4ee5\u5173\u8054\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u5355\u884c\u7ed3\u679c\u3002<\/li>\n
  • mysqli_fetch_assoc<\/code>\uff1a\u4ee5\u5173\u8054\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u5355\u884c\u7ed3\u679c\uff0c\u5176\u4e2d\u952e\u540d\u4e3a\u5b57\u6bb5\u540d\u3002<\/li>\n
  • mysqli_fetch_all<\/code>\uff1a\u4ee5\u5173\u8054\u6570\u7ec4\u7684\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u6240\u6709\u7ed3\u679c\u3002<\/li>\n<\/ul>\n
    \/\/ \u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\n$users = mysqli_fetch_all($result, MYSQLI_ASSOC);\n\n\/\/ \u904d\u5386\u67e5\u8be2\u7ed3\u679c\nforeach ($users as $user) {\n    echo $user['name'] . \"<br>\";\n}<\/pre>\n
    \u63d2\u5165\u6570\u636e<\/strong><\/p>\n
    \u4f7f\u7528 mysqli_query<\/code> \u51fd\u6570\u63d2\u5165\u6570\u636e\uff1a<\/p>\n
    $sql = \"INSERT INTO users (name, email) VALUES ('John', 'john@example.com')\";\n\nif (mysqli_query($conn, $sql)) {\n    echo \"\u65b0\u8bb0\u5f55\u5df2\u63d2\u5165\";\n} else {\n    echo \"\u63d2\u5165\u5931\u8d25: \" . mysqli_error($conn);\n}<\/pre>\n
    \u5173\u95ed\u8fde\u63a5<\/strong><\/p>\n
    \u6267\u884c\u5b8c\u6240\u6709\u64cd\u4f5c\u540e\uff0c\u5e94\u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5\uff1a<\/p>\n
    mysqli_close($conn);<\/pre>\n
    \u5b9e\u6218\u6848\u4f8b<\/strong><\/p>\n
    \u4ee5\u4e0b\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u7528\u4e8e\u67e5\u8be2\u6570\u636e\u5e93\u4e2d\u7684\u7528\u6237\u5e76\u663e\u793a\u4ed6\u4eec\u7684\u59d3\u540d\uff1a<\/p>\n
    \/\/ \u8fde\u63a5\u5230\u6570\u636e\u5e93\n$conn = mysqli_connect(\"localhost\", \"username\", \"password\", \"database\");\n\n\/\/ \u6267\u884c\u67e5\u8be2\n$sql = \"SELECT name FROM users\";\n$result = mysqli_query($conn, $sql);\n\n\/\/ \u5904\u7406\u67e5\u8be2\u7ed3\u679c\n$users = mysqli_fetch_all($result, MYSQLI_ASSOC);\n\n\/\/ \u904d\u5386\u67e5\u8be2\u7ed3\u679c\nforeach ($users as $user) {\n    echo $user['name'] . \"<br>\";\n}\n\n\/\/ \u5173\u95ed\u8fde\u63a5\nmysqli_close($conn);<\/pre>\n
    \u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300aPHP \u51fd\u6570\u5982\u4f55\u4e0e SQL \u4ea4\u4e92\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591a\u6587\u7ae0\u77e5\u8bc6\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    PHP \u51fd\u6570\u5982\u4f55\u4e0e SQL \u4ea4\u4e92 \u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300aPHP \u51fd\u6570\u5982\u4f55\u4e0e SQL \u4ea4\u4e92\u300b\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0\u6587\u7ae0\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01 PHP \u63d0\u4f9b\u4e00\u7cfb\u5217\u51fd\u6570\u7528\u4e8e\u4e0e SQL \u6570\u636e\u5e93\u4ea4\u4e92\uff1a\u4f7f\u7528 mysqli_connect \u8fde\u63a5\u5230\u6570\u636e\u5e93\u3002\u4f7f\u7528 mysqli_query \u6267\u884c SQL \u67e5\u8be2\u3002\u4f7f\u7528\u4ee5\u4e0b\u51fd\u6570\u4e4b\u4e00\u5904\u7406\u67e5\u8be2\u7ed3\u679c\uff1amysqli_fetch_row\uff08\u4ee5\u5173\u8054\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u5355\u884c\u7ed3\u679c\uff09mysqli_fetch_assoc\uff08\u4ee5\u5173\u8054\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u5355\u884c\u7ed3\u679c\uff0c\u952e\u540d\u4e3a\u5b57\u6bb5\u540d\uff09mysqli_fetch_all\uff08\u4ee5\u5173\u8054\u6570\u7ec4\u6570\u7ec4\u5f62\u5f0f\u83b7\u53d6\u6240\u6709\u7ed3\u679c\uff09\u4f7f\u7528 mysqli_query \u63d2\u5165\u6570\u636e\u3002\u4f7f\u7528 mysqli_close \u5173\u95ed\u8fde\u63a5\u3002 PHP \u51fd\u6570\u4e0e SQL \u4ea4\u4e92 PHP \u63d0\u4f9b\u4e86\u8bb8\u591a\u51fd\u6570\u7528\u4e8e\u4e0e SQL \u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\uff0c\u5305\u62ec\u8fde\u63a5\u3001\u67e5\u8be2\u548c\u6570\u636e\u64cd\u4f5c\u3002 \u8fde\u63a5\u5230\u6570\u636e\u5e93 \u4ee5\u4e0b\u4ee3\u7801\u4f7f\u7528 mysqli_connect \u51fd\u6570\u8fde\u63a5\u5230 MySQL \u6570\u636e\u5e93\uff1a $servername = “localhost”; $username = “username”; $password = “password”; $dbname = “database”; \/\/ \u521b\u5efa\u4e00\u4e2a MySQL \u8fde\u63a5 $conn = mysqli_connect($servername, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-47130","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=47130"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/47130\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=47130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=47130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=47130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}