{"id":870,"date":"2019-08-13T17:00:57","date_gmt":"2019-08-13T09:00:57","guid":{"rendered":"https:\/\/wyxxt.org.cn\/?p=870"},"modified":"2023-12-04T16:46:10","modified_gmt":"2023-12-04T08:46:10","slug":"spl%ef%bc%88php%e6%a0%87%e5%87%86%e5%ba%93%ef%bc%89","status":"publish","type":"post","link":"https:\/\/wyxxt.org.cn\/?p=870","title":{"rendered":"SPL\uff08PHP\u6807\u51c6\u5e93\uff09"},"content":{"rendered":"

\u4e00\u3001\u7b80\u4ecb<\/h3>\n
    \n
  1. \u4ec0\u4e48\u662fSPL\uff1f
    \nStandard PHP Library(PHP\u6807\u51c6\u5e93)
    \nSPL\u662f\u7528\u4e8e\u89e3\u51b3\u5178\u578b\u95ee\u9898(standard problems)\u7684\u4e00\u7ec4\u63a5\u53e3\u4e0e\u7c7b\u7684\u96c6\u5408\u3002
    \n\u76ee\u524d\u5728\u4f7f\u7528\u4e2d\uff0cSPL\u66f4\u591a\u5730\u88ab\u770b\u4f5c\u662f\u4e00\u79cd\u4f7fobject\uff08\u7269\u4f53\uff09\u6a21\u4effarray\uff08\u6570\u7ec4\uff09\u884c\u4e3a\u7684interfaces\u548cclasses\u3002<\/p>\n<\/li>\n
  2. \n

    \u4ec0\u4e48\u662fIterator? \uff08\u8fed\u4ee3\u5668\uff09
    \nSPL\u7684\u6838\u5fc3\u6982\u5ff5\u5c31\u662fIterator\u3002\u8fd9\u6307\u7684\u662f\u4e00\u79cdDesign Pattern\u3002
    \n\u901a\u4fd7\u5730\u8bf4\uff0cIterator\u80fd\u591f\u4f7f\u8bb8\u591a\u4e0d\u540c\u7684\u6570\u636e\u7ed3\u6784\uff0c\u90fd\u80fd\u6709\u7edf\u4e00\u7684\u64cd\u4f5c\u754c\u9762\uff0c\u6bd4\u5982\u4e00\u4e2a\u6570\u636e\u5e93\u7684\u7ed3\u679c\u96c6\u3001\u540c\u4e00\u4e2a\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u96c6\u3001\u6216\u8005\u4e00\u4e2a\u6587\u672c\u4e2d\u6bcf\u4e00\u884c\u6784\u6210\u7684\u96c6\u5408\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u5982\u679c\u6309\u7167\u666e\u901a\u60c5\u51b5\uff0c\u904d\u5386\u4e00\u4e2aMySQL\u7684\u7ed3\u679c\u96c6\uff0c\u7a0b\u5e8f\u9700\u8981\u8fd9\u6837\u5199\uff1a<\/p>\n

    \/\/ Fetch the \"aggregate structure\"\n$result = mysql_query(\"SELECT * FROM users\");\n\n\/\/ Iterate over the structure\nwhile ( $row = mysql_fetch_array($result) ) {\n   \/\/ do stuff with the row here\n}\n<\/code><\/pre>\n
    \u8bfb\u51fa\u4e00\u4e2a\u76ee\u5f55\u4e2d\u7684\u5185\u5bb9\uff0c\u9700\u8981\u8fd9\u6837\u5199\uff1a<\/p>\n
    \/\/ Fetch the \"aggregate structure\"\n$dh = opendir('\/home\/harryf\/files');\n\n\/\/ Iterate over the structure\nwhile ( $file = readdir($dh) ) {\n   \/\/ do stuff with the file here\n}\n\n<\/code><\/pre>\n
    \u8bfb\u51fa\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u9700\u8981\u8fd9\u6837\u5199\uff1a<\/p>\n
    \/\/ Fetch the \"aggregate structure\"\n$fh = fopen(\"\/home\/hfuecks\/files\/results.txt\", \"r\");\n\n\/\/ Iterate over the structure\nwhile (!feof($fh)) {\n\n   $line = fgets($fh);\n   \/\/ do stuff with the line here\n\n}\n\n<\/code><\/pre>\n
    \u4e0a\u9762\u4e09\u6bb5\u4ee3\u7801\uff0c\u867d\u7136\u5904\u7406\u7684\u662f\u4e0d\u540c\u7684resource\uff08\u8d44\u6e90\uff09\uff0c\u4f46\u662f\u529f\u80fd\u90fd\u662f\u904d\u5386\u7ed3\u679c\u96c6\uff08loop over contents\uff09\uff0c\u56e0\u6b64Iterator\u7684\u57fa\u672c\u601d\u60f3\uff0c\u5c31\u662f\u5c06\u8fd9\u4e09\u79cd\u4e0d\u540c\u7684\u64cd\u4f5c\u7edf\u4e00\u8d77\u6765\uff0c\u7528\u540c\u6837\u7684\u547d\u4ee4\u754c\u9762\uff0c\u5904\u7406\u4e0d\u540c\u7684\u8d44\u6e90\u3002<\/p>\n
    \u4e8c\u3001SPL Interfaces\uff08\u6311\u9009\u90e8\u5206\uff09<\/h3>\n
    \u4e09\u3001SPL Classes\uff08\u6311\u9009\u90e8\u5206\uff09<\/h3>\n","protected":false},"excerpt":{"rendered":"
    \u4e00\u3001\u7b80\u4ecb \u4ec0\u4e48\u662fSPL\uff1f Standard PHP Library(PHP\u6807\u51c6\u5e93) SPL\u662f\u7528\u4e8e\u89e3\u51b3\u5178\u578b\u95ee\u9898( […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[15],"tags":[405],"class_list":["post-870","post","type-post","status-publish","format-standard","hentry","category-15","tag-php"],"_links":{"self":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/870","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=870"}],"version-history":[{"count":6,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/870\/revisions"}],"predecessor-version":[{"id":1052,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/870\/revisions\/1052"}],"wp:attachment":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=870"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=870"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=870"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}