{"id":1019,"date":"2019-08-27T16:01:19","date_gmt":"2019-08-27T08:01:19","guid":{"rendered":"https:\/\/wyxxt.org.cn\/?p=1019"},"modified":"2023-12-04T15:51:59","modified_gmt":"2023-12-04T07:51:59","slug":"php%e5%9f%ba%e7%a1%80-%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/wyxxt.org.cn\/?p=1019","title":{"rendered":"PHP\u57fa\u7840\u2014\u2014\u6570\u7ec4"},"content":{"rendered":"

\u4e00\u3001\u57fa\u672c\u6982\u5ff5<\/h3>\n

\u6570\u7ec4\uff1aarray\uff0c\u6570\u636e\u7684\u7ec4\u5408\u3002\u6307\u5c06\u4e00\u7ec4\u6570\u636e\uff08\u591a\u4e2a\uff09\u5b58\u50a8\u5230\u4e00\u4e2a\u6307\u5b9a\u7684\u5bb9\u5668\u4e2d\uff0c\u7528\u53d8\u91cf\u6307\u5411\u8be5\u5bb9\u5668\uff0c\u7136\u540e\u53ef\u4ee5\u901a\u8fc7\u53d8\u91cf\u4e00\u6b21\u6027\u5f97\u5230\u8be5\u5bb9\u5668\u4e2d\u7684\u6240\u6709\u6570\u636e\u3002<\/p>\n

\u4e8c\u3001\u591a\u7ef4\u6570\u7ec4<\/h3>\n

\u6570\u7ec4\u91cc\u9762\u7684\u5143\u7d20\u53c8\u662f\u6570\u7ec4
\n1. \u4e8c\u7ef4\u6570\u7ec4\uff1a\u6570\u7ec4\u4e2d\u5143\u7d20\u90fd\u662f\u4e00\u7ef4\u6570\u7ec4
\n2. \u591a\u7ef4\u6570\u7ec4\uff1a\u5728\u7b2c\u4e8c\u7ef4\u7684\u6570\u7ec4\u5143\u7d20\u4e2d\u53ef\u4ee5\u7ee7\u7eed\u662f\u6570\u7ec4\uff0c\u5728PHP\u4e2d\u6ca1\u6709\u7ef4\u5ea6\u9650\u5236\uff08PHP\u672c\u8d28\u5e76\u6ca1\u6709\u4e8c\u7ef4\u6570\u7ec4\uff09\u3002\u4f46\u662f\u4e0d\u5efa\u8bae\u4f7f\u7528\u8d85\u8fc7\u4e09\u7ef4\u4ee5\u4e0a\u7684\u6570\u7ec4\uff0c\u4f1a\u589e\u52a0\u8bbf\u95ee\u7684\u590d\u6742\u5ea6\u964d\u4f4e\u8bbf\u95ee\u6548\u7387
\n3. \u5f02\u5f62\u6570\u7ec4\uff08\u4e0d\u89c4\u5219\u6570\u7ec4\uff09\uff1a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e0d\u89c4\u5219\uff0c\u7531\u666e\u901a\u57fa\u672c\u53d8\u91cf\u4e5f\u6709\u6570\u7ec4\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u5e76\u4e0d\u5e38\u7528\uff0c\u5c3d\u91cf\u8ba9\u6570\u7ec4\u5143\u7d20\u89c4\u5219\u8bdd\uff08\u4fbf\u4e8e\u8bbf\u95ee\uff09<\/p>\n

\u4e09\u3001\u904d\u5386\u6570\u7ec4<\/h3>\n
    \n
  1. \u904d\u5386\u7684\u57fa\u672c\u542b\u4e49
    \n\u666e\u901a\u6570\u7ec4\u6570\u636e\u7684\u8bbf\u95ee\u90fd\u662f\u901a\u8fc7\u6570\u7ec4\u5143\u7d20\u7684\u4e0b\u6807\u6765\u5b9e\u73b0\u8bbf\u95ee\uff0c\u5982\u679c\u8bf4\u6570\u7ec4\u4e2d\u6240\u6709\u6570\u636e\u90fd\u9700\u8981\u4e00\u6b21\u8f93\u51fa\u51fa\u6765\uff0c\u5c31\u9700\u8981\u6211\u4eec\u4f7f\u7528\u4e00\u4e9b\u7b80\u5316\u7684\u89c4\u5219\u6765\u5b9e\u73b0\u81ea\u52a8\u83b7\u53d6\u4e0b\u6807\u53ca\u8f93\u51fa\u6570\u7ec4\u5143\u7d20<\/li>\n<\/ol>\n

    foreach\u904d\u5386<\/h4>\n

    \u8bed\u6cd5<\/strong><\/p>\n

    foreach($arr as $k => $v) {\n    echo $k.'===>'.$v;\n}\n<\/code><\/pre>\n
    \u539f\u7406<\/strong><\/p>\n
    \u672c\u8d28\u662f\u6570\u7ec4\u7684\u5185\u90e8\u6709\u4e00\u9897\u6307\u9488\uff0c\u9ed8\u8ba4\u53ea\u60f3\u6570\u7ec4\u5143\u7d20\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\uff0cforeach\u5c31\u662f\u5229\u7528\u6307\u9488\u53bb\u56de\u53bb\u6570\u7ec4\uff0c\u540c\u65f6\u4ee5\u52a8\u6307\u9488<\/p>\n
    for\u5faa\u73af\u904d\u5386<\/h4>\n
    \/\/ \u6570\u7ec4\u7279\u70b9\uff1a \u7d22\u5f15\u6570\u7ec4\uff0c\u4e0b\u6807\u89c4\u5f8b\n\nfor($i = 0, $len = count($arr);$i < $len; $i++) {\n    echo $i . '=>' . $arr[$i];\n}\n<\/code><\/pre>\n
    while\u914d\u5408each\u548clist\u904d\u5386\u6570\u7ec4<\/h4>\n
    while\u662f\u5728\u5916\u90e8\u5b9a\u4e49\u8fb9\u754c\u6761\u4ef6\uff0c\u5982\u679c\u8981\u5b9e\u73b0\u53ef\u4ee5\u548cfor\u5faa\u73af\u4e00\u6837<\/p>\n
    each\u51fd\u6570\u7684\u4f7f\u7528\uff1aeach\u80fd\u591f\u4ece\u4e00\u4e2a\u6570\u7ec4\u4e2d\u83b7\u53d6\u5f53\u524d\u6570\u7ec4\u6307\u9488\u6240\u6307\u5411\u7684\u5143\u7d20\u7684\u4e0b\u6807\u548c\u503c\uff0c\u62ff\u5230\u4e4b\u540e\u5c06\u6570\u7ec4\u4e0b\u6807\u4e0b\u79fb<\/strong>\uff0c\u540c\u65f6\u5c06\u62ff\u5230\u7684\u5143\u7d20\u4e0b\u6807\u548c\u503c\u4ee5\u4e00\u4e2a\u56db\u4e2a\u5143\u7d20\u7684\u6570\u7ec4\u8fd4\u56de\uff1a
    \n0\u4e0b\u6807 -\u300b \u53d6\u5f97\u5143\u7d20\u7684\u4e0b\u6807\u503c
    \n1\u5c0f\u6807 -\u300b \u53d6\u5f97\u5143\u7d20\u7684\u503c
    \nkey\u4e0b\u6807 -\u300b \u53d6\u5f97\u5143\u7d20\u7684\u4e0b\u6807\u503c
    \nvalue\u4e0b\u6807 -\u300b \u53d6\u5f97\u5143\u7d20\u7684\u503c
    \n\"\"
    \n\u5982\u679ceach\u53d6\u4e0d\u5230\u7ed3\u679c\uff0c\u8fd4\u56defalse
    \nlist\u51fd\u6570\u7684\u4f7f\u7528\uff1alist\u662f\u4e00\u79cd\u7ed3\u6784\uff0c\u4e0d\u662f\u4e00\u79cd\u51fd\u6570\uff08\u6ca1\u6709\u8fd4\u56de\u503c\uff09\uff0c\u662flist\u63d0\u4f9b\u4e00\u5806\u53d8\u91cf\u5c48\u4ece\u4e00\u4e2a\u6570\u7ec4\u4e2d\u53d6\u5f97\u5143\u7d20\u503c\uff0c\u7ed5\u540e\u4e00\u6b21\u5b58\u653e\u5230\u5bf9\u5e94\u7684\u53d8\u91cf\u5f53\u4e2d\uff08\u6279\u91cf\u4e3a\u53d8\u91cf\u8d4b\u503c\uff1a\u503c\u6765\u6e90\u4e8e\u6570\u7ec4\uff09\uff1a
    \nlist\u5fc5\u987b\u4ece\u7d22\u5f15\u6570\u7ec4\u4e2d\u53d6\u83b7\u53d6\u6570\u636e\uff0c\u5fc5\u987b\u4ece0\u5f00\u59cb
    \n\"\"
    \nlist\u4e0eeach\u914d\u5408\u7279\u522b\u597d\uff1aeach\u4e00\u5b9a\u6709\u4e24\u4e2a\u4e0b\u68070\u548c1
    \nlist($first, $second) = each($arr); \/\/\u662f\u4e00\u79cd\u590d\u5236\u8fd0\u7b97\uff0c\u53ef\u4ee5\u5f97\u5230false\u7ed3\u679c
    \n\"\"<\/p>\n
    \u56db\u3001\u6570\u7ec4\u6392\u5e8f\u51fd\u6570<\/h3>\n
    \u90fd\u662f\u6309\u7167ASCII\u7801\u8fdb\u884c\u6392\u5e8f
    \nsort()\uff1a\u987a\u5e8f\u6392\u5e8f\uff08\u4e0b\u6807\u6392\u5e8f\uff09
    \nrsort()\uff1a\u9006\u5e8f\u6392\u5e8f
    \nasort()\uff1a\u8212\u5f90\u6392\u5e8f\uff08\u4e0b\u6807\u4fdd\u7559\uff09
    \narsort()\uff1a\u9006\u5e8f\u6392\u5e8f
    \nksort()\uff1a\u987a\u5e8f\u6392\u5e8f\uff0c\u6309\u952e\u540d\uff08\u4e0b\u6807\uff09
    \nkrsort()\uff1a\u9006\u5e8f\u6392\u5e8f
    \nshuffle()\uff1a\u6253\u4e71\uff0c\u6570\u7ec4\u4e0b\u6807\u91cd\u6392<\/p>\n
    \u4e94\u3001\u6570\u7ec4\u6307\u9488\u51fd\u6570<\/h3>\n
    reset()\uff1a\u91cd\u7f6e\u6307\u9488\uff0c\u5c06\u6570\u7ec4\u6307\u9488\u56de\u5230\u9996\u4f4d
    \nend()\uff1a\u91cd\u7f6e\u6307\u9488\uff0c\u5c06\u6570\u7ec4\u6307\u9488\u6307\u5230\u6700\u540e\u4e00\u4e2a\u5143\u7d20
    \nnext()\uff1a\u6307\u9488\u4e0b\u79fb\uff0c\u53d6\u5f97\u4e0b\u4e00\u4e2a\u5143\u7d20\u7684\u503c
    \nprev()\uff1a\u6307\u9488\u4e0a\u79fb\uff0c\u53d6\u5f97\u4e0a\u4e00\u4e2a\u5143\u7d20\u7684\u503c
    \ncurrent()\uff1a\u83b7\u53d6\u5f53\u524d\u6307\u9488\u5bf9\u5e94\u7684\u5143\u7d20\u503c
    \nkey()\uff1a\u83b7\u53d6\u5f53\u524d\u6307\u9488\u5bf9\u5e94\u7684\u4e0b\u6807\u503c
    \n\u6ce8\u610f<\/em><\/strong>\uff1anext\u548cpre\u4f1a\u79fb\u52a8\u6307\u9488\uff0c\u53ef\u80fd\u5bfc\u81f4\u6307\u9488\u79bb\u5f00\u6570\u7ec4\uff0c\u5bfc\u81f4\u6570\u7ec4\u4e0d\u53ef\u7528\uff0c\u901a\u8fc7next\u548cpre\u4e0d\u80fd\u56de\u5230\u6b63\u786e\u7684\u6307\u9488\u4f4d\u7f6e\u3002\u53ea\u80fd\u901a\u8fc7end\u6216reset\u8fdb\u884c\u6307\u9488\u91cd\u7f6e<\/p>\n
    \u516d\u3001\u6570\u7ec4\u76f8\u5173\u51fd\u6570<\/h3>\n
    count()\uff1a\u7edf\u8ba1\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u6570\u91cf
    \narray_push()\uff1a\u5f80\u6570\u7ec4\u4e2d\u52a0\u5165\u4e00\u4e2a\u5143\u7d20\uff08\u6570\u7ec4\u540e\u9762\uff09
    \narray_pop()\uff1a\u4ece\u6570\u7ec4\u4e2d\u53d6\u51fa\u4e00\u4e2a\u5143\u7d20\uff08\u6570\u7ec4\u540e\u9762\uff09
    \narray_shift()\uff1a\u5f80\u6570\u7ec4\u4e2d\u53d6\u51fa\u4e00\u4e2a\u5143\u7d20\uff08\u6570\u7ec4\u524d\u9762\uff09
    \narray_unshift()\uff1a\u4ece\u6570\u7ec4\u4e2d\u52a0\u5165\u4e00\u4e2a\u5143\u7d20\uff08\u6570\u7ec4\u524d\u9762\uff09
    \narray_reverse()\uff1a\u6570\u7ec4\u7ffb\u8f6c
    \nin_array()\uff1a\u5224\u65ad\u4e00\u4e2a\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u662f\u5426\u5b58\u5728
    \narray_keys()\uff1a\u83b7\u53d6\u4e00\u4e2a\u6570\u7ec4\u7684\u6240\u6709\u4e0b\u6807\uff0c\u8fd4\u56de\u4e00\u4e2a\u7d22\u5f15\u6570\u7ec4
    \narray_values()\uff1a\u83b7\u53d6\u4e00\u4e2a\u6570\u7ec4\u7684\u6240\u6709\u503c\uff0c\u8fd4\u56de\u4e00\u4e2a\u7d22\u5f15\u6570\u7ec4<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u4e00\u3001\u57fa\u672c\u6982\u5ff5 \u6570\u7ec4\uff1aarray\uff0c\u6570\u636e\u7684\u7ec4\u5408\u3002\u6307\u5c06\u4e00\u7ec4\u6570\u636e\uff08\u591a\u4e2a\uff09\u5b58\u50a8\u5230\u4e00\u4e2a\u6307\u5b9a\u7684\u5bb9\u5668\u4e2d\uff0c\u7528\u53d8\u91cf\u6307\u5411\u8be5\u5bb9\u5668\uff0c\u7136\u540e […]<\/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-1019","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\/1019","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=1019"}],"version-history":[{"count":6,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/1019\/revisions"}],"predecessor-version":[{"id":1045,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=\/wp\/v2\/posts\/1019\/revisions\/1045"}],"wp:attachment":[{"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wyxxt.org.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}