{"id":217865,"date":"2023-12-23T01:33:28","date_gmt":"2023-12-22T17:33:28","guid":{"rendered":"https:\/\/www.idc.net\/help\/217865\/"},"modified":"2023-12-23T01:33:28","modified_gmt":"2023-12-22T17:33:28","slug":"php%e5%87%bd%e6%95%b0%ef%bc%9aatan2","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217865\/","title":{"rendered":"PHP\u51fd\u6570\uff1aatan2"},"content":{"rendered":"<p><title id=\"php%e5%87%bd%e6%95%b0%ef%bc%9aatan2-LKhIHAOWpi\">PHP\u51fd\u6570\uff1aatan2<\/title><\/p>\n<h1 id=\"php%e5%87%bd%e6%95%b0%ef%bc%9aatan2-LKhIHAOWpi\">PHP\u51fd\u6570\uff1aatan2<\/h1>\n<h2 id=\"%e6%a6%82%e8%bf%b0-LKhIHAOWpi\">\u6982\u8ff0<\/h2>\n<p>\u5728PHP\u4e2d\uff0catan2\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u4e8e\u8ba1\u7b97\u7ed9\u5b9a\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\u70b9\u7684\u53cd\u6b63\u5207\u503c\u7684\u6570\u5b66\u51fd\u6570\u3002\u5b83\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff0c\u5206\u522b\u662fy\u5750\u6807\u548cx\u5750\u6807\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u4ecb\u4e8e-\u03c0\u548c\u03c0\u4e4b\u95f4\u7684\u89d2\u5ea6\u503c\u3002<\/p>\n<h2 id=\"%e8%af%ad%e6%b3%95-LKhIHAOWpi\">\u8bed\u6cd5<\/h2>\n<p>atan2(y, x)<\/p>\n<h2 id=\"%e5%8f%82%e6%95%b0-LKhIHAOWpi\">\u53c2\u6570<\/h2>\n<ul>\n<li><strong>y\uff1a<\/strong>\u70b9\u7684y\u5750\u6807<\/li>\n<li><strong>x\uff1a<\/strong>\u70b9\u7684x\u5750\u6807<\/li>\n<\/ul>\n<h2 id=\"%e8%bf%94%e5%9b%9e%e5%80%bc-LKhIHAOWpi\">\u8fd4\u56de\u503c<\/h2>\n<p>atan2\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a\u4ecb\u4e8e-\u03c0\u548c\u03c0\u4e4b\u95f4\u7684\u89d2\u5ea6\u503c\uff0c\u5355\u4f4d\u4e3a\u5f27\u5ea6\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-LKhIHAOWpi\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528atan2\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>&lt;?php\n$x = 3;\n$y = 4;\n$angle = atan2($y, $x);\necho \"\u89d2\u5ea6\u503c\uff1a\" . rad2deg($angle) . \"\u00b0\";\n?&gt;<\/code><\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\u4e3a\uff1a<\/p>\n<pre><code>\u89d2\u5ea6\u503c\uff1a53.130102354156\u00b0<\/code><\/pre>\n<h2 id=\"%e8%af%b4%e6%98%8e-LKhIHAOWpi\">\u8bf4\u660e<\/h2>\n<p>atan2\u51fd\u6570\u7684\u8fd4\u56de\u503c\u662f\u4e00\u4e2a\u4ecb\u4e8e-\u03c0\u548c\u03c0\u4e4b\u95f4\u7684\u89d2\u5ea6\u503c\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4e24\u4e2a\u70b9\u4e4b\u95f4\u7684\u89d2\u5ea6\uff0c\u6216\u8005\u5c06\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\u7684\u70b9\u8f6c\u6362\u4e3a\u6781\u5750\u6807\u7cfb\u4e2d\u7684\u89d2\u5ea6\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%9c%ba%e6%99%af-LKhIHAOWpi\">\u4f7f\u7528\u573a\u666f<\/h2>\n<p>atan2\u51fd\u6570\u5728\u5f88\u591a\u9886\u57df\u90fd\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u7279\u522b\u662f\u5728\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u548c\u6e38\u620f\u5f00\u53d1\u4e2d\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4e24\u4e2a\u70b9\u4e4b\u95f4\u7684\u89d2\u5ea6\uff0c\u4ece\u800c\u5b9e\u73b0\u7269\u4f53\u7684\u65cb\u8f6c\u3001\u65b9\u5411\u63a7\u5236\u7b49\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-LKhIHAOWpi\">\u603b\u7ed3<\/h2>\n<p>PHP\u7684atan2\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u4e8e\u8ba1\u7b97\u7ed9\u5b9a\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d\u70b9\u7684\u53cd\u6b63\u5207\u503c\u7684\u6570\u5b66\u51fd\u6570\u3002\u5b83\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff0c\u5206\u522b\u662fy\u5750\u6807\u548cx\u5750\u6807\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u4ecb\u4e8e-\u03c0\u548c\u03c0\u4e4b\u95f4\u7684\u89d2\u5ea6\u503c\u3002\u5728\u8ba1\u7b97\u673a\u56fe\u5f62\u5b66\u548c\u6e38\u620f\u5f00\u53d1\u4e2d\uff0catan2\u51fd\u6570\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002<\/p>\n<h2 id=\"%e9%a6%99%e6%b8%af%e6%9c%8d%e5%8a%a1%e5%99%a8%e9%a6%96%e9%80%89%e5%90%8e%e6%b5%aa%e4%ba%91-LKhIHAOWpi\">\u9999\u6e2f\u670d\u52a1\u5668\u9996\u9009\u540e\u6d6a\u4e91<\/h2>\n<p>\u540e\u6d6a\u4e91\u662f\u4e00\u5bb6\u4e13\u4e1a\u7684\u4e91\u8ba1\u7b97\u516c\u53f8\uff0c\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7b49\u4ea7\u54c1\u3002\u4f5c\u4e3a\u4e00\u5bb6\u9886\u5148\u7684\u4e91\u670d\u52a1\u63d0\u4f9b\u5546\uff0c\u540e\u6d6a\u4e91\u4e3a\u5ba2\u6237\u63d0\u4f9b\u9ad8\u6027\u80fd\u3001\u7a33\u5b9a\u53ef\u9760\u7684\u670d\u52a1\u5668\u89e3\u51b3\u65b9\u6848\u3002\u5982\u679c\u60a8\u9700\u8981\u9999\u6e2f\u670d\u52a1\u5668\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002<\/p>\n<p>\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee<a href=\"https:\/\/idc.net\">\u540e\u6d6a\u4e91\u5b98\u7f51<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\uff1aatan2 PHP\u51fd\u6570\uff1aatan2 \u6982\u8ff0 \u5728PHP\u4e2d\uff0catan2\u51fd\u6570\u662f\u4e00\u4e2a\u7528\u4e8e\u8ba1\u7b97\u7ed9\u5b9a\u76f4\u89d2\u5750\u6807\u7cfb\u4e2d [&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-217865","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217865","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=217865"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217865\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}