{"id":79,"date":"2016-05-18T03:14:43","date_gmt":"2016-05-18T03:14:43","guid":{"rendered":"http:\/\/120.27.50.22\/wordpress\/?p=79"},"modified":"2016-05-18T03:14:43","modified_gmt":"2016-05-18T03:14:43","slug":"boolean-%e5%b8%83%e5%b0%94%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"http:\/\/www.homconnect.cn\/?p=79","title":{"rendered":"Boolean \u5e03\u5c14\u7c7b\u578b"},"content":{"rendered":"<p>\u8fd9\u662f\u6700\u7b80\u5355\u7684\u7c7b\u578b\u3002<span class=\"type\">boolean<\/span> \u8868\u8fbe\u4e86\u771f\u503c\uff0c\u53ef\u4ee5\u4e3a <strong><code>TRUE<\/code><\/strong> \u6216 <strong><code>FALSE<\/code><\/strong>\u3002<\/p>\n<h3 class=\"title\">\u8bed\u6cd5<\/h3>\n<p class=\"para\">\u8981\u6307\u5b9a\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u4f7f\u7528\u5173\u952e\u5b57 <strong><code>TRUE<\/code><\/strong> \u6216 <strong><code>FALSE<\/code><\/strong>\u3002\u4e24\u4e2a\u90fd\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002<\/p>\n<p class=\"para\">&lt;?php<br \/>\n$foo\u00a0= true;\u00a0\/\/\u00a0assign\u00a0the\u00a0value\u00a0TRUE\u00a0to\u00a0$foo<br \/>\n?&gt;<\/p>\n<p class=\"para\">\u901a\u5e38\u8fd0\u7b97\u7b26\u6240\u8fd4\u56de\u7684 <span class=\"type\">boolean<\/span> \u503c\u7ed3\u679c\u4f1a\u88ab\u4f20\u9012\u7ed9\u63a7\u5236\u6d41\u7a0b\u3002<\/p>\n<blockquote>\n<p class=\"para\">\/\/\u00a0==\u00a0\u662f\u4e00\u4e2a\u64cd\u4f5c\u7b26\uff0c\u5b83\u68c0\u6d4b\u4e24\u4e2a\u53d8\u91cf\u662f\u5426\u76f8\u7b49\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c<br \/>\nif\u00a0($action\u00a0==\u00a0&#8220;show_version&#8221;)\u00a0{<br \/>\necho\u00a0&#8220;The\u00a0version\u00a0is\u00a01.23&#8221;;<br \/>\n}<\/p>\n<p>\/\/\u00a0\u8fd9\u6837\u505a\u662f\u4e0d\u5fc5\u8981\u7684&#8230;<br \/>\nif\u00a0($show_separators\u00a0==\u00a0TRUE)\u00a0{<br \/>\necho\u00a0&#8220;&lt;hr&gt;\\n&#8221;;<br \/>\n}<\/p>\n<p>\/\/\u00a0&#8230;\u56e0\u4e3a\u53ef\u4ee5\u4f7f\u7528\u4e0b\u9762\u8fd9\u79cd\u7b80\u5355\u7684\u65b9\u5f0f\uff1a<br \/>\nif\u00a0($show_separators)\u00a0{<br \/>\necho\u00a0&#8220;&lt;hr&gt;\\n&#8221;;<br \/>\n}<\/p>\n<\/blockquote>\n<h3 class=\"title\">\u8f6c\u6362\u4e3a\u5e03\u5c14\u503c<\/h3>\n<p class=\"simpara\">\u8981\u660e\u786e\u5730\u5c06\u4e00\u4e2a\u503c\u8f6c\u6362\u6210 <span class=\"type\">boolean<\/span>\uff0c\u7528 <em>(bool)<\/em> \u6216\u8005 <em>(boolean)<\/em> \u6765\u5f3a\u5236\u8f6c\u6362\u3002\u4f46\u662f\u5f88\u591a\u60c5\u51b5\u4e0b\u4e0d\u9700\u8981\u7528\u5f3a\u5236\u8f6c\u6362\uff0c\u56e0\u4e3a\u5f53\u8fd0\u7b97\u7b26\uff0c\u51fd\u6570\u6216\u8005\u6d41\u7a0b\u63a7\u5236\u7ed3\u6784\u9700\u8981\u4e00\u4e2a <span class=\"type\">boolean<\/span> \u53c2\u6570\u65f6\uff0c\u8be5\u503c\u4f1a\u88ab\u81ea\u52a8\u8f6c\u6362\u3002<\/p>\n<p class=\"para\">\u5f53\u8f6c\u6362\u4e3a <span class=\"type\">boolean<\/span> \u65f6\uff0c\u4ee5\u4e0b\u503c\u88ab\u8ba4\u4e3a\u662f <strong><code>FALSE<\/code><\/strong>\uff1a<\/p>\n<ul class=\"itemizedlist\">\n<li class=\"listitem\"><span class=\"simpara\">\u5e03\u5c14\u503c <strong><code>FALSE<\/code><\/strong> \u672c\u8eab <\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">\u6574\u578b\u503c 0\uff08\u96f6\uff09 <\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">\u6d6e\u70b9\u578b\u503c 0.0\uff08\u96f6\uff09 <\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\"> \u7a7a\u5b57\u7b26\u4e32\uff0c\u4ee5\u53ca\u5b57\u7b26\u4e32 &#8220;0&#8221; <\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\">\u4e0d\u5305\u62ec\u4efb\u4f55\u5143\u7d20\u7684\u6570\u7ec4 <\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\"> \u4e0d\u5305\u62ec\u4efb\u4f55\u6210\u5458\u53d8\u91cf\u7684\u5bf9\u8c61\uff08\u4ec5 PHP 4.0 \u9002\u7528\uff09 <\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\"> \u7279\u6b8a\u7c7b\u578b NULL\uff08\u5305\u62ec\u5c1a\u672a\u8d4b\u503c\u7684\u53d8\u91cf\uff09 <\/span><\/li>\n<li class=\"listitem\"><span class=\"simpara\"> \u4ece\u7a7a\u6807\u8bb0\u751f\u6210\u7684 SimpleXML \u5bf9\u8c61 <\/span><\/li>\n<\/ul>\n<p class=\"para\">\u6240\u6709\u5176\u5b83\u503c\u90fd\u88ab\u8ba4\u4e3a\u662f <strong><code>TRUE<\/code><\/strong>\uff08\u5305\u62ec\u4efb\u4f55\u8d44\u6e90\uff09\u3002<\/p>\n<p class=\"para\"><em>-1<\/em> \u548c\u5176\u5b83\u975e\u96f6\u503c\uff08\u4e0d\u8bba\u6b63\u8d1f\uff09\u4e00\u6837\uff0c\u88ab\u8ba4\u4e3a\u662f <strong><code>TRUE<\/code><\/strong>\uff01<\/p>\n<blockquote>\n<p class=\"para\">var_dump((bool)\u00a0&#8220;&#8221;);\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0bool(false)<br \/>\nvar_dump((bool)\u00a01);\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0bool(true)<br \/>\nvar_dump((bool)\u00a0-2);\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0bool(true)<br \/>\nvar_dump((bool)\u00a0&#8220;foo&#8221;);\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0bool(true)<br \/>\nvar_dump((bool)\u00a02.3e5);\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0bool(true)<br \/>\nvar_dump((bool)\u00a0array(12));\u00a0\/\/\u00a0bool(true)<br \/>\nvar_dump((bool)\u00a0array());\u00a0\u00a0\u00a0\/\/\u00a0bool(false)<br \/>\nvar_dump((bool)\u00a0&#8220;false&#8221;);\u00a0\u00a0\u00a0\/\/\u00a0bool(true)<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u662f\u6700\u7b80\u5355\u7684\u7c7b\u578b\u3002boolean \u8868\u8fbe\u4e86\u771f\u503c\uff0c\u53ef\u4ee5\u4e3a TRUE \u6216 FALSE\u3002 \u8bed\u6cd5 \u8981\u6307\u5b9a\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u4f7f\u7528 &hellip; <a href=\"http:\/\/www.homconnect.cn\/?p=79\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cBoolean \u5e03\u5c14\u7c7b\u578b\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[40],"_links":{"self":[{"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=\/wp\/v2\/posts\/79"}],"collection":[{"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=79"}],"version-history":[{"count":1,"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions"}],"predecessor-version":[{"id":80,"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=\/wp\/v2\/posts\/79\/revisions\/80"}],"wp:attachment":[{"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=79"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=79"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.homconnect.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=79"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}