{"id":217843,"date":"2023-12-23T01:11:26","date_gmt":"2023-12-22T17:11:26","guid":{"rendered":"https:\/\/www.idc.net\/help\/217843\/"},"modified":"2023-12-23T01:11:26","modified_gmt":"2023-12-22T17:11:26","slug":"php%e5%87%bd%e6%95%b0%ef%bc%9around","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217843\/","title":{"rendered":"PHP\u51fd\u6570\uff1around"},"content":{"rendered":"<p><title id=\"php%e5%87%bd%e6%95%b0%ef%bc%9around-lGkBxXpfeI\">PHP\u51fd\u6570\uff1around<\/title><\/p>\n<h1 id=\"php%e5%87%bd%e6%95%b0%ef%bc%9around-lGkBxXpfeI\">PHP\u51fd\u6570\uff1around<\/h1>\n<p>\u5728PHP\u4e2d\uff0cround()\u51fd\u6570\u7528\u4e8e\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165\u3002<\/p>\n<h2 id=\"%e8%af%ad%e6%b3%95-lGkBxXpfeI\">\u8bed\u6cd5<\/h2>\n<p>round(number, precision, mode)<\/p>\n<h2 id=\"%e5%8f%82%e6%95%b0-lGkBxXpfeI\">\u53c2\u6570<\/h2>\n<ul>\n<li><strong>number\uff1a<\/strong>\u8981\u8fdb\u884c\u56db\u820d\u4e94\u5165\u7684\u6570\u5b57\u3002<\/li>\n<li><strong>precision\uff1a<\/strong>\u53ef\u9009\u53c2\u6570\uff0c\u6307\u5b9a\u4fdd\u7559\u7684\u5c0f\u6570\u4f4d\u6570\uff0c\u9ed8\u8ba4\u4e3a0\u3002<\/li>\n<li><strong>mode\uff1a<\/strong>\u53ef\u9009\u53c2\u6570\uff0c\u6307\u5b9a\u820d\u5165\u6a21\u5f0f\uff0c\u9ed8\u8ba4\u4e3aPHP_ROUND_HALF_UP\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%bf%94%e5%9b%9e%e5%80%bc-lGkBxXpfeI\">\u8fd4\u56de\u503c<\/h2>\n<p>round()\u51fd\u6570\u8fd4\u56de\u56db\u820d\u4e94\u5165\u540e\u7684\u7ed3\u679c\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-lGkBxXpfeI\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528round()\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>\n\n<\/pre>\n<h2 id=\"%e8%88%8d%e5%85%a5%e6%a8%a1%e5%bc%8f-lGkBxXpfeI\">\u820d\u5165\u6a21\u5f0f<\/h2>\n<p>round()\u51fd\u6570\u7684\u7b2c\u4e09\u4e2a\u53c2\u6570mode\u6307\u5b9a\u4e86\u820d\u5165\u6a21\u5f0f\u3002\u4ee5\u4e0b\u662f\u53ef\u7528\u7684\u820d\u5165\u6a21\u5f0f\uff1a<\/p>\n<ul>\n<li><strong>PHP_ROUND_HALF_UP\uff1a<\/strong>\u5411\u4e0a\u820d\u5165\uff0c\u5982\u679c\u5c0f\u6570\u90e8\u5206\u5927\u4e8e\u7b49\u4e8e0.5\uff0c\u5219\u8fdb\u4f4d\u3002<\/li>\n<li><strong>PHP_ROUND_HALF_DOWN\uff1a<\/strong>\u5411\u4e0b\u820d\u5165\uff0c\u5982\u679c\u5c0f\u6570\u90e8\u5206\u5c0f\u4e8e0.5\uff0c\u5219\u820d\u53bb\u3002<\/li>\n<li><strong>PHP_ROUND_HALF_EVEN\uff1a<\/strong>\u5411\u6700\u63a5\u8fd1\u7684\u5076\u6570\u820d\u5165\uff0c\u5982\u679c\u5c0f\u6570\u90e8\u5206\u7b49\u4e8e0.5\uff0c\u5219\u5411\u6700\u63a5\u8fd1\u7684\u5076\u6570\u820d\u5165\u3002<\/li>\n<li><strong>PHP_ROUND_HALF_ODD\uff1a<\/strong>\u5411\u6700\u63a5\u8fd1\u7684\u5947\u6570\u820d\u5165\uff0c\u5982\u679c\u5c0f\u6570\u90e8\u5206\u7b49\u4e8e0.5\uff0c\u5219\u5411\u6700\u63a5\u8fd1\u7684\u5947\u6570\u820d\u5165\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%80%bb%e7%bb%93-lGkBxXpfeI\">\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528PHP\u7684round()\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u65b9\u4fbf\u5730\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165\u3002\u8be5\u51fd\u6570\u975e\u5e38\u5b9e\u7528\uff0c\u53ef\u4ee5\u5728\u5904\u7406\u91d1\u878d\u6570\u636e\u3001\u8ba1\u7b97\u5e73\u5747\u503c\u7b49\u573a\u666f\u4e2d\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u9ad8\u6027\u80fd\u3001\u53ef\u9760\u7684\u670d\u52a1\u5668\uff0c\u540e\u6d6a\u4e91\u63d0\u4f9b\u591a\u79cd\u9009\u62e9\uff0c\u5305\u62ec<a href=\"https:\/\/idc.net\/zh-hk\/servers\/hong-kong-servers\/\">\u9999\u6e2f\u670d\u52a1\u5668<\/a>\u3001<a href=\"https:\/\/idc.net\/zh-hk\/servers\/usa-servers\/\">\u7f8e\u56fd\u670d\u52a1\u5668<\/a>\u548c<a href=\"https:\/\/idc.net\/zh-hk\/servers\/cloud-servers\/\">\u4e91\u670d\u52a1\u5668<\/a>\u3002\u65e0\u8bba\u60a8\u662f\u4e2a\u4eba\u7528\u6237\u8fd8\u662f\u4f01\u4e1a\u7528\u6237\uff0c\u540e\u6d6a\u4e91\u90fd\u80fd\u6ee1\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\uff1around PHP\u51fd\u6570\uff1around \u5728PHP\u4e2d\uff0cround()\u51fd\u6570\u7528\u4e8e\u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165\u3002 \u8bed\u6cd5 [&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-217843","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217843","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=217843"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217843\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217843"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217843"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217843"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}