{"id":217850,"date":"2023-12-23T01:18:21","date_gmt":"2023-12-22T17:18:21","guid":{"rendered":"https:\/\/www.idc.net\/help\/217850\/"},"modified":"2023-12-23T01:18:21","modified_gmt":"2023-12-22T17:18:21","slug":"php%e5%87%bd%e6%95%b0%ef%bc%9ais_finite","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217850\/","title":{"rendered":"PHP\u51fd\u6570\uff1ais_finite"},"content":{"rendered":"<p><title id=\"php%e5%87%bd%e6%95%b0%ef%bc%9ais_finite-dOmuxqJoWZ\">PHP\u51fd\u6570\uff1ais_finite<\/title><\/p>\n<h1 id=\"php%e5%87%bd%e6%95%b0%ef%bc%9ais_finite-dOmuxqJoWZ\">PHP\u51fd\u6570\uff1ais_finite<\/h1>\n<p>\u5728PHP\u4e2d\uff0cis_finite()\u51fd\u6570\u7528\u4e8e\u68c0\u67e5\u4e00\u4e2a\u503c\u662f\u5426\u4e3a\u6709\u9650\u6570\u3002<\/p>\n<h2 id=\"%e8%af%ad%e6%b3%95-dOmuxqJoWZ\">\u8bed\u6cd5<\/h2>\n<p>is_finite(value)<\/p>\n<h2 id=\"%e5%8f%82%e6%95%b0-dOmuxqJoWZ\">\u53c2\u6570<\/h2>\n<p>value\uff1a\u8981\u68c0\u67e5\u7684\u503c\u3002<\/p>\n<h2 id=\"%e8%bf%94%e5%9b%9e%e5%80%bc-dOmuxqJoWZ\">\u8fd4\u56de\u503c<\/h2>\n<p>\u5982\u679c\u503c\u662f\u6709\u9650\u6570\uff0c\u5219\u8fd4\u56detrue\uff0c\u5426\u5219\u8fd4\u56defalse\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-dOmuxqJoWZ\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u4e86is_finite()\u51fd\u6570\u7684\u4f7f\u7528\uff1a<\/p>\n<pre>\n<code>\n\n<\/code>\n<\/pre>\n<h2 id=\"%e8%af%b4%e6%98%8e-dOmuxqJoWZ\">\u8bf4\u660e<\/h2>\n<p>is_finite()\u51fd\u6570\u7528\u4e8e\u68c0\u67e5\u4e00\u4e2a\u503c\u662f\u5426\u4e3a\u6709\u9650\u6570\u3002\u5982\u679c\u503c\u662f\u6709\u9650\u6570\uff0c\u5219\u8fd4\u56detrue\uff0c\u5426\u5219\u8fd4\u56defalse\u3002<\/p>\n<p>\u6709\u9650\u6570\u662f\u6307\u4e0d\u662f\u65e0\u7a77\u5927\uff08INF\uff09\u6216\u65e0\u7a77\u5c0f\uff08-INF\uff09\u7684\u6570\u3002NaN\uff08\u975e\u6570\u5b57\uff09\u4e5f\u88ab\u89c6\u4e3a\u65e0\u9650\u5927\uff0c\u56e0\u6b64is_finite()\u51fd\u6570\u4f1a\u5c06\u5176\u89c6\u4e3a\u975e\u6709\u9650\u6570\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-dOmuxqJoWZ\">\u603b\u7ed3<\/h2>\n<p>is_finite()\u51fd\u6570\u662fPHP\u4e2d\u7528\u4e8e\u68c0\u67e5\u4e00\u4e2a\u503c\u662f\u5426\u4e3a\u6709\u9650\u6570\u7684\u51fd\u6570\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u4eba\u5458\u5728\u5904\u7406\u6570\u503c\u65f6\u8fdb\u884c\u6709\u6548\u7684\u9a8c\u8bc1\u548c\u5224\u65ad\u3002\u901a\u8fc7\u4f7f\u7528is_finite()\u51fd\u6570\uff0c\u53ef\u4ee5\u786e\u4fdd\u6240\u5904\u7406\u7684\u6570\u503c\u662f\u6709\u6548\u7684\uff0c\u907f\u514d\u51fa\u73b0\u610f\u5916\u7684\u9519\u8bef\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u53ef\u9760\u7684\u9999\u6e2f\u670d\u52a1\u5668\u63d0\u4f9b\u5546\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002\u6211\u4eec\u63d0\u4f9b\u9ad8\u6027\u80fd\u7684\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u53ef\u6ee1\u8db3\u60a8\u7684\u5404\u79cd\u9700\u6c42\u3002\u65e0\u8bba\u60a8\u662f\u4e2a\u4eba\u7528\u6237\u8fd8\u662f\u4f01\u4e1a\u7528\u6237\uff0c\u6211\u4eec\u90fd\u6709\u9002\u5408\u60a8\u7684\u89e3\u51b3\u65b9\u6848\u3002\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u7f51\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff1a<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\uff1ais_finite PHP\u51fd\u6570\uff1ais_finite \u5728PHP\u4e2d\uff0cis_finite()\u51fd\u6570\u7528\u4e8e\u68c0\u67e5 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[197851],"tags":[],"class_list":["post-217850","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217850","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=217850"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217850\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}