{"id":217840,"date":"2023-12-23T01:08:20","date_gmt":"2023-12-22T17:08:20","guid":{"rendered":"https:\/\/www.idc.net\/help\/217840\/"},"modified":"2023-12-23T01:08:20","modified_gmt":"2023-12-22T17:08:20","slug":"php%e5%87%bd%e6%95%b0%ef%bc%9aabs","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217840\/","title":{"rendered":"PHP\u51fd\u6570\uff1aabs"},"content":{"rendered":"<p><title id=\"php%e5%87%bd%e6%95%b0%ef%bc%9aabs-VaCklxmzJk\">PHP\u51fd\u6570\uff1aabs<\/title><\/p>\n<h1 id=\"php%e5%87%bd%e6%95%b0%ef%bc%9aabs-VaCklxmzJk\">PHP\u51fd\u6570\uff1aabs<\/h1>\n<p>\u5728PHP\u7f16\u7a0b\u4e2d\uff0cabs()\u51fd\u6570\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u51fd\u6570\uff0c\u7528\u4e8e\u8fd4\u56de\u4e00\u4e2a\u6570\u7684\u7edd\u5bf9\u503c\u3002<\/p>\n<h2 id=\"%e8%af%ad%e6%b3%95-VaCklxmzJk\">\u8bed\u6cd5<\/h2>\n<p>abs(number $num): number<\/p>\n<h2 id=\"%e5%8f%82%e6%95%b0-VaCklxmzJk\">\u53c2\u6570<\/h2>\n<p>num: \u5fc5\u9700\uff0c\u8981\u8ba1\u7b97\u7edd\u5bf9\u503c\u7684\u6570\u503c\u3002<\/p>\n<h2 id=\"%e8%bf%94%e5%9b%9e%e5%80%bc-VaCklxmzJk\">\u8fd4\u56de\u503c<\/h2>\n<p>\u8fd4\u56denum\u7684\u7edd\u5bf9\u503c\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-VaCklxmzJk\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528abs()\u51fd\u6570\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>\n&lt;?php\n$num1 = -10;\n$num2 = 5;\n$num3 = -3.14;\n\necho &quot;abs($num1) = &quot; . abs($num1) . &quot;<br>\";\necho \"abs($num2) = \" . abs($num2) . \"<br>\";\necho \"abs($num3) = \" . abs($num3) . \"<br>\";\n?&gt;\n<\/pre>\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<\/p>\n<pre>\nabs(-10) = 10\nabs(5) = 5\nabs(-3.14) = 3.14\n<\/pre>\n<h2 id=\"%e8%af%b4%e6%98%8e-VaCklxmzJk\">\u8bf4\u660e<\/h2>\n<p>abs()\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\uff0c\u5e76\u8fd4\u56de\u8be5\u53c2\u6570\u7684\u7edd\u5bf9\u503c\u3002\u5982\u679c\u53c2\u6570\u662f\u4e00\u4e2a\u6574\u6570\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u6574\u6570\uff1b\u5982\u679c\u53c2\u6570\u662f\u4e00\u4e2a\u6d6e\u70b9\u6570\uff0c\u5219\u8fd4\u56de\u4e00\u4e2a\u6d6e\u70b9\u6570\u3002<\/p>\n<p>\u5982\u679c\u53c2\u6570\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0cabs()\u51fd\u6570\u4f1a\u5c1d\u8bd5\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u503c\u7c7b\u578b\uff0c\u7136\u540e\u8ba1\u7b97\u7edd\u5bf9\u503c\u3002\u5982\u679c\u65e0\u6cd5\u8f6c\u6362\u4e3a\u6570\u503c\u7c7b\u578b\uff0c\u5219\u8fd4\u56de0\u3002<\/p>\n<p>abs()\u51fd\u6570\u4e5f\u53ef\u4ee5\u7528\u4e8e\u8ba1\u7b97\u590d\u6570\u7684\u6a21\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u53c2\u6570\u5e94\u8be5\u662f\u4e00\u4e2a\u5305\u542b\u5b9e\u90e8\u548c\u865a\u90e8\u7684\u590d\u6570\u3002<\/p>\n<h2 id=\"%e6%80%bb%e7%bb%93-VaCklxmzJk\">\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528PHP\u7684abs()\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u8ba1\u7b97\u4e00\u4e2a\u6570\u7684\u7edd\u5bf9\u503c\u3002\u65e0\u8bba\u662f\u6574\u6570\u8fd8\u662f\u6d6e\u70b9\u6570\uff0c\u8be5\u51fd\u6570\u90fd\u80fd\u6b63\u786e\u8fd4\u56de\u7edd\u5bf9\u503c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u60f3\u4e86\u89e3\u66f4\u591a\u5173\u4e8ePHP\u51fd\u6570\u7684\u4fe1\u606f\uff0c\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684<a href=\"https:\/\/idc.net\">\u5b98\u7f51<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u51fd\u6570\uff1aabs PHP\u51fd\u6570\uff1aabs \u5728PHP\u7f16\u7a0b\u4e2d\uff0cabs()\u51fd\u6570\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u51fd\u6570\uff0c\u7528\u4e8e\u8fd4\u56de\u4e00\u4e2a\u6570\u7684\u7edd [&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-217840","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217840","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=217840"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217840\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}