{"id":26,"date":"2022-08-29T10:06:48","date_gmt":"2022-08-29T02:06:48","guid":{"rendered":"https:\/\/mianka.xyz\/?p=24"},"modified":"2022-08-29T10:11:55","modified_gmt":"2022-08-29T02:11:55","slug":"php","status":"publish","type":"post","link":"https:\/\/www.mianka.xyz\/?p=26","title":{"rendered":"php\u5982\u4f55\u8ba1\u7b97\u6570\u7ec4\u957f\u5ea6\uff1f"},"content":{"rendered":"<h1 style=\"text-align: center;\">php\u5982\u4f55\u8ba1\u7b97\u6570\u7ec4\u957f\u5ea6\uff1f<\/h1>\n<p><\/p>\n<p>\u5728PHP\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528count() \u6216sizeof\u51fd\u6570\u6765\u83b7\u53d6\u6570\u7ec4\u4e2d\u5b58\u5728\u7684\u5143\u7d20\u7684\u603b\u957f\u5ea6\u6216\u603b\u6570\uff0c\u8ba1\u7b97\u6570\u7ec4\u957f\u5ea6\u3002<\/p>\n<p><\/p>\n<h2>\u65b9\u6cd5\u4e00\uff1acount()\u51fd\u6570<\/h2>\n<p><\/p>\n<p>\u9996\u5148\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u6570\u7ec4\uff0c\u5982\u4e0b\uff1a<\/p>\n<p><\/p>\n<pre class=\"prism-highlight prism-language-markup\">$array&nbsp;=&nbsp;array&nbsp;&nbsp;(&quot;ABC&quot;,&quot;DEF&quot;,&nbsp;&quot;GHI&quot;,&quot;KLM&quot;);<\/pre>\n<p><\/p>\n<p>\u7136\u540e\u6211\u4eec\u4f7f\u7528count\u51fd\u6570\u6765\u6253\u5370\u51fa\u6b64\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6570\u91cf\u3002<\/p>\n<pre class=\"prism-highlight prism-language-markup\">var_dump(count($array);)<\/pre>\n<p><\/p>\n<p>\u6ce8\uff1acount() \u51fd\u6570\u8ba1\u7b97\u6570\u7ec4\u4e2d\u7684\u5355\u5143\u6570\u76ee\u6216\u5bf9\u8c61\u4e2d\u7684\u5c5e\u6027\u4e2a\u6570\u3002<\/p>\n<p><\/p>\n<p>\u65b9\u6cd5\u4e8c\uff1asizeof()\u51fd\u6570<\/p>\n<p><\/p>\n<p>\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528sizeof\u51fd\u6570\u6765\u786e\u5b9a\u503c\u7684\u6570\u91cf\u3002<\/p>\n<p><\/p>\n<p>\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<p><\/p>\n<pre class=\"prism-highlight prism-language-markup\">$value=&nbsp;array(2,5,6,8,9);\necho&nbsp;&quot;\u6570\u7ec4\u503c\u7684\u6570\u91cf\u662f&quot;.sizeof($value).&quot;&lt;br&gt;&quot;;<\/pre>\n<p><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<p><\/p>\n<p>\u4e0a\u9762\u8ba1\u7b97\u8f93\u51fa\u4e3a5\u3002<\/p>\n<p><\/p>\n<p>\u6ce8\uff1asizeof() \u51fd\u6570\u8ba1\u7b97\u6570\u7ec4\u4e2d\u7684\u5355\u5143\u6570\u76ee\u6216\u5bf9\u8c61\u4e2d\u7684\u5c5e\u6027\u4e2a\u6570\u3002sizeof() \u51fd\u6570\u662f count() \u51fd\u6570\u7684\u522b\u540d\u3002<\/p>\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<h1 style=\"text-align: center;\">php\u5982\u4f55\u8ba1\u7b97\u6570\u7ec4\u957f\u5ea6\uff1f<\/h1>\n<p><\/p>\n<p>\u5728PHP\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528count() \u6216sizeof\u51fd\u6570\u6765\u83b7\u53d6\u6570\u7ec4\u4e2d\u5b58\u5728\u7684\u5143\u7d20\u7684\u603b\u957f\u5ea6\u6216\u603b\u6570\uff0c\u8ba1\u7b97\u6570\u7ec4\u957f\u5ea6\u3002<\/p>\n<p><\/p>\n<h2>\u65b9\u6cd5\u4e00\uff1acount()\u51fd\u6570<\/h2>\n<p><\/p>\n<p>\u9996\u5148\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u6570\u7ec4\uff0c\u5982\u4e0b\uff1a<\/p>\n<p><\/p>\n<pre class=\"prism-highlight prism-language-markup\"><\/pre>\n<p><!--autointro--><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[9],"class_list":["post-26","post","type-post","status-publish","format-standard","hentry","category-phpbiji","tag-php"],"_links":{"self":[{"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=\/wp\/v2\/posts\/26","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26"}],"version-history":[{"count":0,"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=\/wp\/v2\/posts\/26\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mianka.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}