{"id":217856,"date":"2023-12-23T01:24:22","date_gmt":"2023-12-22T17:24:22","guid":{"rendered":"https:\/\/www.idc.net\/help\/217856\/"},"modified":"2023-12-23T01:24:22","modified_gmt":"2023-12-22T17:24:22","slug":"php%e5%87%bd%e6%95%b0%ef%bc%9alog10","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217856\/","title":{"rendered":"PHP\u51fd\u6570\uff1alog10"},"content":{"rendered":"<h1 id=\"php%e5%87%bd%e6%95%b0%ef%bc%9alog10-TiMUgAnvGC\">PHP\u51fd\u6570\uff1alog10<\/h1>\n<p>\u5728PHP\u7f16\u7a0b\u8bed\u8a00\u4e2d\uff0clog10()\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u4e8e\u8ba1\u7b97\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u7684\u5185\u7f6e\u51fd\u6570\u3002\u5b83\u8fd4\u56de\u4e00\u4e2a\u7ed9\u5b9a\u6570\u5b57\u7684\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u503c\u3002<\/p>\n<h2 id=\"%e8%af%ad%e6%b3%95-TiMUgAnvGC\">\u8bed\u6cd5<\/h2>\n<p>log10(number)<\/p>\n<h2 id=\"%e5%8f%82%e6%95%b0-TiMUgAnvGC\">\u53c2\u6570<\/h2>\n<p>number\uff1a\u8981\u8ba1\u7b97\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u7684\u6570\u5b57\u3002<\/p>\n<h2 id=\"%e8%bf%94%e5%9b%9e%e5%80%bc-TiMUgAnvGC\">\u8fd4\u56de\u503c<\/h2>\n<p>log10()\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u6570\u5b57\u7684\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u503c\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-TiMUgAnvGC\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4f7f\u7528log10()\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>\n<code>\n\n<\/code>\n<\/pre>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>\n<code>\nlog10(100) = 2\nlog10(1000) = 3\n<\/code>\n<\/pre>\n<h2 id=\"%e8%af%b4%e6%98%8e-TiMUgAnvGC\">\u8bf4\u660e<\/h2>\n<p>log10()\u51fd\u6570\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u6570\u5b66\u51fd\u6570\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u5927\u91cf\u6570\u636e\u65f6\u3002\u5b83\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8ba1\u7b97\u6570\u5b57\u7684\u5bf9\u6570\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u7406\u89e3\u548c\u5206\u6790\u6570\u636e\u3002<\/p>\n<p>log10()\u51fd\u6570\u7684\u8fd4\u56de\u503c\u662f\u4e00\u4e2a\u6d6e\u70b9\u6570\uff0c\u8868\u793a\u7ed9\u5b9a\u6570\u5b57\u7684\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u503c\u3002\u5982\u679c\u7ed9\u5b9a\u7684\u6570\u5b57\u5c0f\u4e8e\u7b49\u4e8e0\uff0c\u5219log10()\u51fd\u6570\u5c06\u8fd4\u56defalse\u3002<\/p>\n<p>log10()\u51fd\u6570\u7684\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<pre>\n<code>\nlog10(x) = log(x) \/ log(10)\n<\/code>\n<\/pre>\n<p>\u5176\u4e2d\uff0clog(x)\u8868\u793a\u4ee5e\u4e3a\u5e95\u7684\u5bf9\u6570\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-TiMUgAnvGC\">\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528PHP\u7684log10()\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u8ba1\u7b97\u4e00\u4e2a\u6570\u5b57\u7684\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u503c\u3002\u8fd9\u5bf9\u4e8e\u5904\u7406\u5927\u91cf\u6570\u636e\u548c\u8fdb\u884c\u6570\u5b66\u8ba1\u7b97\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u4e00\u4e2a\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u670d\u52a1\u63d0\u4f9b\u5546\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002\u540e\u6d6a\u4e91\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7b49\u591a\u79cd\u4ea7\u54c1\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u7528\u6237\u7684\u9700\u6c42\u3002\u60a8\u53ef\u4ee5\u8bbf\u95ee<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\uff1alog10 \u5728PHP\u7f16\u7a0b\u8bed\u8a00\u4e2d\uff0clog10()\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u4e8e\u8ba1\u7b97\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u7684\u5185\u7f6e\u51fd\u6570\u3002\u5b83\u8fd4\u56de [&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-217856","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217856","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=217856"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217856\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217856"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}