{"id":30714,"date":"2022-11-09T10:02:43","date_gmt":"2022-12-06T20:11:12","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%9a%84%e5%88%86%e9%a1%b5%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-12T20:28:27","modified_gmt":"2025-08-12T12:28:27","slug":"php%e4%b8%ad%e7%9a%84%e5%88%86%e9%a1%b5%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/php%e4%b8%ad%e7%9a%84%e5%88%86%e9%a1%b5%e6%96%b9%e6%b3%95\/","title":{"rendered":"PHP\u4e2d\u7684\u5206\u9875\u65b9\u6cd5"},"content":{"rendered":"

\u8fd9\u662f\u6211\u521d\u6b21\u6295\u7a3f\u3002
\n\u5173\u4e8ePHP\u7684\u5206\u9875\u529f\u80fd\uff0c\u4e4b\u524d\u5b9e\u65bd\u8fc7\u4f46\u662f\u77e5\u8bc6\u6709\u6240\u9057\u6f0f\uff0c\u6240\u4ee5\u5e0c\u671b\u901a\u8fc7\u8f93\u51fa\u7684\u65b9\u5f0f\u6765\u590d\u4e60\u3002\u5982\u679c\u80fd\u5bf9\u67d0\u65b9\u9762\u6709\u6240\u5e2e\u52a9\uff0c\u6211\u4f1a\u611f\u5230\u5e78\u8fd0\u3002<\/p>\n

\u8981\u70b9
\n– \u6bcf\u9875\u663e\u793a5\u4e2a\u9879\u76ee
\n– \u5728\u9875\u9762\u7684\u524d\u540e\u663e\u793a\u201c\u524d\u4e00\u9875\u201d\u548c\u201c\u540e\u4e00\u9875\u201d\u3002\u5982\u679c\u6709\u591a\u4e2a\u9875\u9762\uff0c\u5219\u5b83\u4eec\u5c06\u88ab\u8bbe\u4e3a\u94fe\u63a5\uff0c\u70b9\u51fb\u6bcf\u4e2a\u6309\u94ae\u5c06\u8df3\u8f6c\u5230\u524d\u540e\u7684\u9875\u9762
\n– \u663e\u793a\u6700\u591a5\u4e2a\u9875\u7801\u3002\u57fa\u672c\u4e0a\u53ea\u663e\u793a\u5f53\u524d\u663e\u793a\u7684\u9875\u9762\u524d\u540e\u76842\u4e2a\u9875\u7801
\n– \u6839\u636e\u663e\u793a\u7684\u9875\u9762\u6570\uff0c\u201c\u663e\u793a\u7b2cX\u81f3\u7b2cX\u4e2a\u5546\u54c1\u4e2d\u7684\u7b2cX\u4e2a\u201d<\/p>\n

\u6b64\u6b21\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u539f\u751f\u7684PHP\u8fdb\u884c\u5b9e\u73b0\uff0c\u800c\u4e0d\u4f7f\u7528Laravel\u6216\u5176\u4ed6\u6846\u67b6\u3002<\/p>\n

\u5927\u81f4\u7684\u5f62\u8c61\u5c31\u662f\u8fd9\u6837\u7684\u3002<\/p>\n

\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8\u6570\u636e\u5e93\u76f8\u5173<\/p>\n
function<\/span> get_db_connect<\/span>(){<\/span>\r\n  $dsn<\/span> =<\/span> 'mysql:dbname='<\/span>.<\/span> DB_NAME<\/span> .<\/span>';host='<\/span>.<\/span> DB_HOST<\/span> .<\/span>';charset='<\/span>.<\/span>DB_CHARSET<\/span>;<\/span>\r\n\r\n  try<\/span> {<\/span>\r\n    $dbh<\/span> =<\/span> new<\/span> PDO<\/span>(<\/span>$dsn<\/span>,<\/span> DB_USER<\/span>,<\/span> DB_PASS<\/span>,<\/span> array<\/span>(<\/span>PDO<\/span>::<\/span>MYSQL_ATTR_INIT_COMMAND<\/span> =><\/span> 'SET NAMES utf8mb4'<\/span>));<\/span>\r\n    $dbh<\/span>-><\/span>setAttribute<\/span>(<\/span>PDO<\/span>::<\/span>ATTR_ERRMODE<\/span>,<\/span> PDO<\/span>::<\/span>ERRMODE_EXCEPTION<\/span>);<\/span>\r\n    $dbh<\/span>-><\/span>setAttribute<\/span>(<\/span>PDO<\/span>::<\/span>ATTR_EMULATE_PREPARES<\/span>,<\/span> false<\/span>);<\/span>\r\n    $dbh<\/span>-><\/span>setAttribute<\/span>(<\/span>PDO<\/span>::<\/span>ATTR_DEFAULT_FETCH_MODE<\/span>,<\/span> PDO<\/span>::<\/span>FETCH_ASSOC<\/span>);<\/span>\r\n  }<\/span> catch<\/span> (<\/span>PDOException<\/span> $e<\/span>)<\/span> {<\/span>\r\n    exit<\/span>(<\/span>'\u63a5\u7d9a\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002'<\/span>);<\/span>\r\n  }<\/span>\r\n  return<\/span> $dbh<\/span>;<\/span>\r\n}<\/span>\r\n\r\n\r\nfunction<\/span> fetch_all_query<\/span>(<\/span>$db<\/span>,<\/span> $sql<\/span>,<\/span> $params<\/span> =<\/span> array<\/span>()){<\/span>\r\n  try<\/span>{<\/span>\r\n    $statement<\/span> =<\/span> $db<\/span>-><\/span>prepare<\/span>(<\/span>$sql<\/span>);<\/span>\r\n    $statement<\/span>-><\/span>execute<\/span>(<\/span>$params<\/span>);<\/span>\r\n    return<\/span> $statement<\/span>-><\/span>fetchAll<\/span>();<\/span>\r\n  }<\/span>catch<\/span>(<\/span>PDOException<\/span> $e<\/span>){<\/span>\r\n    \u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u8868\u793a<\/span>;<\/span>\r\n  }<\/span>\r\n  return<\/span> false<\/span>;<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
\u7528select\u547d\u4ee4\u63d0\u53d6\u6a21\u578b\u6240\u9700\u7684\u5143\u7d20
\n$db = \u83b7\u53d6\u6570\u636e\u5e93\u8fde\u63a5();<\/p>\n
\r\nfunction<\/span> get_items_list<\/span>(<\/span>$db<\/span>,<\/span> $limit<\/span> =<\/span> 5<\/span>,<\/span> $offset<\/span> =<\/span> 0<\/span>){<\/span>\r\n  $sql<\/span> =<\/span> '\r\n    SELECT\r\n       --select\u3059\u308b\u8981\u7d20\u3092\u8a18\u8f09\r\n    limit ?\r\n    offset ?'<\/span>;<\/span>\r\n\r\n  return<\/span> fetch_all_query<\/span>(<\/span>$db<\/span>,<\/span> $sql<\/span>,<\/span> array<\/span>(<\/span>$limit<\/span>,<\/span> $offset<\/span>));<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4e8b\u5148\u5c06\u53ef\u663e\u793a\u7684\u6570\u91cf\u9650\u5b9a\u4e3a$limit=5\u3002<\/p>\n
\u53e6\u5916\uff0c\u6211\u4e5f\u60f3\u77e5\u9053\u603b\u6570\u91cf\uff0c\u6240\u4ee5\u4f7f\u7528\u8ba1\u6570\uff08count\uff09\u6765\u5b9e\u73b0\u3002<\/p>\n
\r\nfunction<\/span> get_items_count<\/span>(<\/span>$db<\/span>)<\/span> {<\/span>\r\n  $sql<\/span> =<\/span> '\r\n    SELECT\r\n        count(*)\r\n    FROM\r\n        \u30c6\u30fc\u30d6\u30eb\u540d'<\/span>\r\n\r\n    $result<\/span> =<\/span> fetch_all_query<\/span>(<\/span>$db<\/span>,<\/span> $sql<\/span>);<\/span>\r\n\r\n    return<\/span> $result<\/span>[<\/span>0<\/span>][<\/span>'count(*)'<\/span>];<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u2461\u5b9e\u73b0view\u753b\u9762<\/p>\n
\r\n<?php<\/span> \r\n\r\nforeach<\/span>(<\/span>$items<\/span> as<\/span> $value<\/span>)<\/span> {<\/span>\r\n\r\n--<\/span>\u3053\u3053\u306bget_items_list\u95a2\u6570\u304b\u3089\u8868\u793a\u3055\u305b\u305f\u3044\u30a2\u30a4\u30c6\u30e0\u3092\u8868\u793a<\/span>\r\n\r\n}<\/span> \r\n\r\necho<\/span> $items_count<\/span>.<\/span> '\u4ef6\u4e2d'<\/span>.<\/span>$page_ini<\/span>.<\/span> \"\u301c\"<\/span> .<\/span>$page_fin<\/span>.<\/span> \"\u4ef6\u76ee\u306e\u5546\u54c1\"<\/span>;<\/span>\r\n\r\n\/\/ \u30ea\u30f3\u30af\u3092\u3064\u3051\u308b\u304b\u306e\u5224\u5b9a<\/span>\r\nif<\/span>(<\/span>$now<\/span> ><\/span> 1<\/span>){<\/span> \r\n    print<\/span> '<a href=\\'..\/html\/\u301c.php?page_id='<\/span>.<\/span>(<\/span>$now<\/span> -<\/span> 1<\/span>)<\/span>.<\/span>'\\')>\u524d\u3078<\/a>'<\/span>.<\/span> '\u3000'<\/span>;<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\n    print<\/span> '\u524d\u3078'<\/span>.<\/span> '\u3000'<\/span>;<\/span>\r\n}<\/span>\r\n\r\nfor<\/span>(<\/span>$i<\/span> =<\/span> 1<\/span>;<\/span> $i<\/span> <=<\/span> $max_page<\/span>;<\/span> $i<\/span>++<\/span>){<\/span>\r\n    if<\/span>(<\/span>$i<\/span> >=<\/span> $now<\/span> -<\/span> $range<\/span> &&<\/span> $i<\/span> <=<\/span> $now<\/span> +<\/span> $range<\/span>)<\/span> {<\/span>\r\n        if<\/span> (<\/span>$i<\/span> ==<\/span> $now<\/span>)<\/span> {<\/span>\r\n            print<\/span> '<a class=\"current_page\" href=\\'\u301c.php?page_id='<\/span>.<\/span>$now<\/span>.<\/span>'\\')>'<\/span>.<\/span> $now<\/span>.<\/span> '<\/a>'<\/span>.<\/span> '\u3000'<\/span>;<\/span>\r\n        }<\/span> else<\/span> {<\/span>\r\n            print<\/span> '<a href=\\'..\/html\/\u301c.php?page_id='<\/span>.<\/span>$i<\/span>.<\/span> '\\')>'<\/span>.<\/span> $i<\/span>.<\/span> '<\/a>'<\/span>.<\/span> '\u3000'<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n\/\/ \u30ea\u30f3\u30af\u3092\u3064\u3051\u308b\u304b\u306e\u5224\u5b9a<\/span>\r\nif<\/span>(<\/span>$now<\/span> <<\/span> $max_page<\/span>){<\/span> \r\n    print<\/span> '<a href=\\'..\/html\/\u301c.php?page_id='<\/span>.<\/span>(<\/span>$now<\/span> +<\/span> 1<\/span>)<\/span>.<\/span>'\\')>\u6b21\u3078<\/a>'<\/span>.<\/span> '\u3000'<\/span>;<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\n    print<\/span> '\u6b21\u3078'<\/span>;<\/span>\r\n}<\/span>\r\n?><\/span>\r\n<\/code><\/pre>\n
\u9996\u5148\uff0c\u4ece\u7b2c\u25cb\u5230\u7b2c\u25cb\u4ef6\u5546\u54c1\u4e2d\u5f00\u59cb\u3002<\/p>\n
\u5173\u4e8e$items_count\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5728model\u4e2d\u7f16\u5199\u7684get_items_count\u51fd\u6570\u6765\u663e\u793a\u5b83\u3002<\/p>\n
\u5173\u4e8epage_ini\u548cpage_fin\uff08\u5373\u8981\u663e\u793a\u7684\u5546\u54c1\u9875\u9762\u7684\u8d77\u59cb\u548c\u7ed3\u675f\u90e8\u5206\uff09\uff0c\u6839\u636e\u901a\u8fc7get\u65b9\u6cd5\u83b7\u53d6\u7684\u9875\u9762id\u6765\u5b9a\u4e49offset\u7684\u503c\uff0c\u4ece\u800c\u6539\u53d8\u663e\u793a\u7684\u9875\u9762\u3002<\/p>\n
\u5173\u4e8e\u201c\u524d\u201d\u548c\u201c\u6b21\u201d\uff0c\u70b9\u51fb\u540e\u83b7\u53d6\u5230\u7684\u9875\u9762id\u4f1a\u52a01\uff0c\u5e76\u4f20\u9012\u7ed9get\u65b9\u6cd5\u3002<\/p>\n
\u7528 for \u5faa\u73af\u6765\u663e\u793a\u9875\u9762\u7684\u6570\u91cf\u3002<\/p>\n
\u5173\u4e8e$range\uff0c\u5f53\u9875\u9762id\u4e3a1\u6216\u6700\u540e\u4e00\u9875\u65f6\uff0c\u8bbe\u4e3a4\uff1b\u5f53id\u4e3a2\u6216\u5012\u6570\u7b2c\u4e8c\u9875\u65f6\uff0c\u8bbe\u4e3a3\uff1b\u5176\u4ed6\u60c5\u51b5\u4e0b\u8bbe\u4e3a2\u3002<\/p>\n
\r\n\/\/\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u306e\u8868\u793a\u6570<\/span>\r\nif<\/span>((<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> 1<\/span> ||<\/span> (<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> (<\/span>int<\/span>)<\/span>$max_page<\/span>)<\/span> {<\/span>\r\n    $range<\/span> =<\/span> 4<\/span>;<\/span>\r\n}<\/span> else<\/span> if<\/span>((<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> 2<\/span> ||<\/span> (<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> ((<\/span>int<\/span>)<\/span>$max_page<\/span> -<\/span>1<\/span>))<\/span> {<\/span>\r\n    $range<\/span> =<\/span> 3<\/span>;<\/span>\r\n}<\/span> else<\/span>  {<\/span>\r\n    $range<\/span> =<\/span> 2<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u2462\u63a7\u5236\u5668\u7684\u8bf4\u660e
\n\u5728\u89c6\u56fe\u4e2d\u5b9a\u4e49\u6307\u5b9a\u7684\u53d8\u91cf\u3002<\/p>\n
\r\nif<\/span>(<\/span>get_get<\/span>(<\/span>'page_id'<\/span>))<\/span> {<\/span>\r\n  $now<\/span> =<\/span> $_GET<\/span>[<\/span>'page_id'<\/span>];<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\n  $now<\/span> =<\/span> 1<\/span>;<\/span>\r\n}<\/span>\r\n\r\n$offset<\/span> =<\/span> (<\/span>$now<\/span> -<\/span> 1<\/span>)<\/span> *<\/span> 5<\/span>;<\/span>\r\n\r\n$items<\/span> =<\/span> get_items_list<\/span>(<\/span>$db<\/span>,<\/span> $limit<\/span> =<\/span> 5<\/span>,<\/span> $offset<\/span>);<\/span>\r\n\r\n$items_count<\/span> =<\/span> get_items_count<\/span>();<\/span>\r\n\r\n$max_page<\/span> =<\/span> ceil<\/span>(<\/span>$items_count<\/span> \/<\/span> 5<\/span>);<\/span>\r\n\r\n$page_ini<\/span> =<\/span> (<\/span>$offset<\/span> +<\/span> 1<\/span>);<\/span>\r\n\r\nif<\/span>(<\/span>count<\/span>(<\/span>$items<\/span>)<\/span> ===<\/span> 5<\/span>)<\/span> {<\/span>\r\n  $page_fin<\/span> =<\/span> (<\/span>$offset<\/span> +<\/span> 5<\/span>);<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\n  $page_fin<\/span> =<\/span> $items_count<\/span>;<\/span>\r\n}<\/span>\r\n\r\nif<\/span>((<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> 1<\/span> ||<\/span> (<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> (<\/span>int<\/span>)<\/span>$max_page<\/span>)<\/span> {<\/span>\r\n    $range<\/span> =<\/span> 4<\/span>;<\/span>\r\n}<\/span> else<\/span> if<\/span>((<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> 2<\/span> ||<\/span> (<\/span>int<\/span>)<\/span>$now<\/span> ===<\/span> ((<\/span>int<\/span>)<\/span>$max_page<\/span> -<\/span>1<\/span>))<\/span> {<\/span>\r\n    $range<\/span> =<\/span> 3<\/span>;<\/span>\r\n}<\/span> else<\/span>  {<\/span>\r\n    $range<\/span> =<\/span> 2<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u9996\u5148\uff0c\u5b9a\u4e49\u63a5\u6536\u5230\u7684\u9875\u9762id\uff08get_get\u662f\u7528\u6237\u81ea\u5b9a\u4e49\u51fd\u6570\uff09\u3002<\/p>\n
\r\n\/\/view\u304b\u3089\u306eid\u3092get\u3057\u305f\u3068\u304d<\/span>\r\nif<\/span>(<\/span>get_get<\/span>(<\/span>'page_id'<\/span>))<\/span> {<\/span>\r\n  $now<\/span> =<\/span> $_GET<\/span>[<\/span>'page_id'<\/span>];<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\n  \/\/\u8a2d\u5b9a\u3055\u308c\u3066\u306a\u3044\u5834\u5408\u306f1\u30da\u30fc\u30b8\u76ee\u306b\u3059\u308b<\/span>\r\n  $now<\/span> =<\/span> 1<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5728\u5b9a\u4e49\u53d8\u91cf\u4e4b\u540e\uff0c\u4f7f\u7528\u8be5\u53d8\u91cf\uff08$now\uff09\u6765\u5b9a\u4e49\u504f\u79fb\u91cf\u3002<\/p>\n
\r\n\/\/\u3053\u3053\u3067offset\u306e\u5b9a\u7fa9<\/span>\r\n$offset<\/span> =<\/span> (<\/span>$now<\/span> -<\/span> 1<\/span>)<\/span> *<\/span> 5<\/span>;<\/span>\r\n<\/code><\/pre>\n
\u5728\u8fd9\u91cc\u5b9a\u4e49\u4e86\u5728\u6a21\u578b\u4e2d\u5b9e\u73b0\u7684select\u8bed\u53e5\u3002<\/p>\n
\r\n$items<\/span> =<\/span> get_items_list<\/span>(<\/span>$db<\/span>,<\/span> $limit<\/span> =<\/span> 5<\/span>,<\/span> $offset<\/span>);<\/span>\r\n$items_count<\/span> =<\/span> get_items_count<\/span>();<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528 ceil \u51fd\u6570\uff0c\u82e5\u4e3a\u5c0f\u6570\u70b9\uff0c\u5219\u8fdb\u884c\u5411\u4e0a\u53d6\u6574\u64cd\u4f5c\u3002<\/p>\n
\r\n$max_page<\/span> =<\/span> ceil<\/span>(<\/span>$items_count<\/span> \/<\/span> 5<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u6839\u636e\u524d\u9762\u6240\u8ff0\uff0c\u9875\u9762_ini\u548c\u9875\u9762_fin\uff08\u5373\u8981\u663e\u793a\u7684\u5546\u54c1\u9875\u9762\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u90e8\u5206\uff09\uff0c\u53d6\u51b3\u4e8e\u504f\u79fb\u503c\uff0c\u663e\u793a\u7684\u9875\u9762\u4f1a\u6709\u6240\u6539\u53d8\u3002<\/p>\n
\r\n\/\/\u6700\u521d<\/span>\r\n$page_ini<\/span> =<\/span> (<\/span>$offset<\/span> +<\/span> 1<\/span>);<\/span>\r\n\r\n\/\/\u6700\u5f8c\uff081\u30da\u30fc\u30b8\u306b\u8868\u793a\u3055\u308c\u308b\u30a2\u30a4\u30c6\u30e0\u6570\u304c5\u3064\u306e\u5834\u5408\u3068\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u3067\u6761\u4ef6\u5206\u5c90\uff09<\/span>\r\nif<\/span>(<\/span>count<\/span>(<\/span>$items<\/span>)<\/span> ===<\/span> 5<\/span>)<\/span> {<\/span>\r\n  $page_fin<\/span> =<\/span> (<\/span>$offset<\/span> +<\/span> 5<\/span>);<\/span>\r\n}<\/span> else<\/span> {<\/span>\r\n  $page_fin<\/span> =<\/span> $items_count<\/span>;<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6211\u60f3\u5728Laravel\u4e2d\u5c1d\u8bd5\u5b9e\u73b0\u5206\u9875\u529f\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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