{"id":25,"date":"2010-03-26T12:13:44","date_gmt":"2010-03-26T04:13:44","guid":{"rendered":"http:\/\/www.blog.okjoyel.com\/?p=25"},"modified":"2012-03-09T21:41:09","modified_gmt":"2012-03-09T13:41:09","slug":"php-fun-floor-round-intval","status":"publish","type":"post","link":"http:\/\/www.zhangxinjun.cn\/?p=25","title":{"rendered":"PHP\u53d6\u6574\u51fd\u6570\u7684\u5177\u4f53\u4f7f\u7528\u65b9\u6cd5\u4ecb\u7ecd\u3010\u8f6c\u3011"},"content":{"rendered":"<p>\u5bf9\u4e8e\u529f\u80fd\u5f3a\u5927\u7684<a href=\"http:\/\/developer.51cto.com\/art\/200810\/94162.htm\">PHP\u8bed\u8a00<\/a>\u6765\u8bf4\uff0c\u80fd\u638c\u63e1\u5230\u5b83\u7684\u51fd\u6570\u7528\u6cd5\uff0c\u4e00\u822c\u90fd\u80fd\u7075\u6d3b\u7684\u7f16\u5199\u5404\u79cd\u9700\u6c42\u7684PHP\u7a0b\u5e8f\u3002\u6211\u4eec\u7ecf\u5e38\u7528\u5230\u7684PHP\u53d6\u6574\u51fd\u6570\uff0c\u4e3b\u8981\u662f\uff1aceil\uff0cfloor\uff0cround\uff0cintval\u3002<\/p>\n<p>ceil &#8212; \u8fdb\u4e00\u6cd5\u53d6\u6574<br \/>\n\u8bf4\u660e<br \/>\nfloat ceil ( float value )<br \/>\n\u8fd4\u56de\u4e0d\u5c0f\u4e8e value \u7684\u4e0b\u4e00\u4e2a\u6574\u6570\uff0cvalue \u5982\u679c\u6709\u5c0f\u6570\u90e8\u5206\u5219\u8fdb\u4e00\u4f4d\u3002ceil() \u8fd4\u56de\u7684\u7c7b\u578b\u4ecd\u7136\u662f float\uff0c\u56e0\u4e3a float \u503c\u7684\u8303\u56f4\u901a\u5e38\u6bd4 integer \u8981\u5927\u3002<\/p>\n<p>PHP\u53d6\u6574\u51fd\u6570\u4f8b\u5b50 1. ceil() \u4f8b\u5b50<\/p>\n<pre>\r\n\t<li>&lt;\u00a0?php \u00a0<\/li>\r\n\t<li>echo\u00a0ceil(4.3);\u00a0\/\/\u00a05 \u00a0<\/li>\r\n\t<li>echo\u00a0ceil(9.999);\u00a0\/\/\u00a010 \u00a0<\/li>\r\n\t<li>?&gt;\u00a0 \u00a0<\/li>\r\n\t<li>\u00a0<\/li>\r\n<\/pre>\n<p>\u00a0<br \/>\nfloor &#8212; \u820d\u53bb\u6cd5\u53d6\u6574<br \/>\n\u8bf4\u660e<br \/>\nfloat floor ( float value )<br \/>\n\u8fd4\u56de\u4e0d\u5927\u4e8e value \u7684\u4e0b\u4e00\u4e2a\u6574\u6570\uff0c\u5c06 value \u7684\u5c0f\u6570\u90e8\u5206\u820d\u53bb\u53d6\u6574\u3002floor() \u8fd4\u56de\u7684\u7c7b\u578b\u4ecd\u7136\u662f float\uff0c\u56e0\u4e3a float \u503c\u7684\u8303\u56f4\u901a\u5e38\u6bd4 integer \u8981\u5927\u3002<\/p>\n<p>PHP\u53d6\u6574\u51fd\u6570\u4f8b\u5b50 1. floor() \u4f8b\u5b50<\/p>\n<pre>\r\n\t<li>&lt;\u00a0?php \u00a0<\/li>\r\n\t<li>echo\u00a0floor(4.3);\u00a0\/\/\u00a04 \u00a0<\/li>\r\n\t<li>echo\u00a0floor(9.999);\u00a0\/\/\u00a09 \u00a0<\/li>\r\n\t<li>?&gt;\u00a0 \u00a0<\/li>\r\n\t<li>\u00a0<\/li>\r\n<\/pre>\n<p>\u00a0<br \/>\nround &#8212; \u5bf9\u6d6e\u70b9\u6570\u8fdb\u884c\u56db\u820d\u4e94\u5165<br \/>\n\u8bf4\u660e<br \/>\nfloat round ( float val [, int precision] )<br \/>\n\u8fd4\u56de\u5c06 val \u6839\u636e\u6307\u5b9a\u7cbe\u5ea6 precision\uff08\u5341\u8fdb\u5236\u5c0f\u6570\u70b9\u540e\u6570\u5b57\u7684\u6570\u76ee\uff09\u8fdb\u884c\u56db\u820d\u4e94\u5165\u7684\u7ed3\u679c\u3002precision \u4e5f\u53ef\u4ee5\u662f\u8d1f\u6570\u6216\u96f6\uff08\u9ed8\u8ba4\u503c\uff09\u3002<\/p>\n<p>PHP\u53d6\u6574\u51fd\u6570\u4f8b\u5b50 1. round() \u4f8b\u5b50<\/p>\n<pre>\r\n\t<li>&lt;\u00a0?php \u00a0<\/li>\r\n\t<li>echo\u00a0round(3.4);\u00a0\/\/\u00a03 \u00a0<\/li>\r\n\t<li>echo\u00a0round(3.5);\u00a0\/\/\u00a04 \u00a0<\/li>\r\n\t<li>echo\u00a0round(3.6);\u00a0\/\/\u00a04 \u00a0<\/li>\r\n\t<li>echo\u00a0round(3.6,\u00a00);\u00a0\/\/\u00a04 \u00a0<\/li>\r\n\t<li>echo\u00a0round(1.95583,\u00a02);\u00a0\/\/\u00a01.96 \u00a0<\/li>\r\n\t<li>echo\u00a0round(1241757,\u00a0-3);\u00a0\/\/\u00a01242000 \u00a0<\/li>\r\n\t<li>echo\u00a0round(5.045,\u00a02);\u00a0\/\/\u00a05.05 \u00a0<\/li>\r\n\t<li>echo\u00a0round(5.055,\u00a02);\u00a0\/\/\u00a05.06 \u00a0<\/li>\r\n\t<li>?&gt;\u00a0<\/li>\r\n\t<li>\u00a0<\/li>\r\n<\/pre>\n<p>\u00a0<\/p>\n<p>intval&#8212;\u5bf9\u53d8\u6570\u8f6c\u6210\u6574\u6570\u578b\u6001<\/p>\n<p>PHP\u53d6\u6574\u51fd\u6570\u4f8b\u5b50intval()<\/p>\n<pre>\r\n\t<li>&lt;\u00a0?php \u00a0<\/li>\r\n\t<li>echo\u00a0intval(4.3);\u00a0\/\/4 \u00a0<\/li>\r\n\t<li>echo\u00a0intval(4.6);\u00a0\/\/\u00a04\u00a0 \u00a0<\/li>\r\n\t<li>?&gt;\u00a0<\/li>\r\n<\/pre>\n<p><span style=\"font-family: Courier New;\">\u8f6c\u81ea\uff1a<a href=\"http:\/\/developer.51cto.com\/art\/200912\/166166.htm\">http:\/\/developer.51cto.com\/art\/200912\/166166.htm<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u53d6\u6574\u51fd\u6570\u662f\u4e00\u4e2a\u529f\u80fd\u6bd4\u8f83\u5168\u9762\u7684\u51fd\u6570\uff0c\u5305\u62ec\uff1aceil\uff0cfloor\uff0cround\uff0cintval\u7b49\u3002\u6211\u4eec\u5728\u63a5\u4e0b\u6765\u7684\u6587\u7ae0\u4e2d\u4e3a\u5927\u5bb6\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u5404\u51fd\u6570\u7684\u76f8\u5173\u7528\u6cd5\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[136,137],"_links":{"self":[{"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=\/wp\/v2\/posts\/25"}],"collection":[{"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=25"}],"version-history":[{"count":0,"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=\/wp\/v2\/posts\/25\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.zhangxinjun.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}