{"id":2484,"date":"2017-07-21T13:55:12","date_gmt":"2017-07-21T05:55:12","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=2484"},"modified":"2024-11-15T18:03:41","modified_gmt":"2024-11-15T10:03:41","slug":"php-%e5%85%ab%e7%a7%8d%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e5%b0%8f%e7%bb%93","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/chengxujiaoben\/php\/php-%e5%85%ab%e7%a7%8d%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e5%b0%8f%e7%bb%93\/","title":{"rendered":"PHP \u516b\u79cd\u57fa\u672c\u7684\u6570\u636e\u7c7b\u578b\u5c0f\u7ed3"},"content":{"rendered":"<div id=\"img-content\">\n<div id=\"js_content\" class=\"rich_media_content \">\n<p><a href=\"https:\/\/mp.weixin.qq.com\/s?timestamp=1500616420&amp;src=3&amp;ver=1&amp;signature=cnJvnj7eVaej9vBLeMgJL51kjZTjZv0RHrCpTDOAOuRmRcKapuxI2ZP5YG6wuvkOt-IYr9D6RfbwdUcauVtQJxwOeKDAEEN1k-GIMfd35jCXz7vSqxg0QthGduhEfCgT*yut9QCiuRuehlOSUn0McmTfejvHX73hUQ2RY30O8aU=\">PHP \u652f\u63018\u79cd\u57fa\u672c\u7684\u6570\u636e\u7c7b\u578b<\/a>,\u5b66\u4e60php\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e0b\u3002<\/p>\n<p class=\"\">\u56db\u79cd\u6807\u91cf\u7c7b\u578b\uff1a<\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span class=\"\">boolean\u00a0\uff08\u5e03\u5c14\u578b\uff0c\u903b\u8f91\u7c7b\u578b\uff09<\/span>\n<p><span class=\"\">\/*\u8fd9\u662f\u6700\u7b80\u5355\u7684\u7c7b\u578b\uff0c\u53ea\u6709\u4e24\u79cd\u53d6\u503c\uff0c\u53ef\u4ee5\u4e3a TRUE\/true \u6216 FALSE\/false \uff0c\u4e0d\u533a\u5206\u5927\u5c0f\u5199\u3002*\/<\/span><\/li>\n<li><span class=\"\">integer\u00a0\uff08\u6574\u578b\uff09<\/span>\n<p><span class=\"\">\/*\u572832 \u4f4d\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u5b83\u7684\u6709\u6548\u8303\u56f4\u662f\uff1a-2 147 483 648~+2 147 483 647\u3002\u6574\u578b\u503c\u53ef\u4ee5\u4f7f\u7528\u5341\u8fdb\u5236\uff0c\u5341\u516d\u8fdb\u5236\u6216\u516b\u8fdb\u5236\u8868\u793a\uff0c\u524d\u9762\u53ef\u4ee5\u52a0\u4e0a\u53ef\u9009\u7684\u7b26\u53f7\uff08- \u6216\u8005 +\uff09\u3002\u516b\u8fdb\u5236\u8868\u793a\u6570\u5b57\u524d\u5fc5\u987b\u52a0\u4e0a 0\uff08\u96f6\uff09\uff0c\u5341\u516d\u8fdb\u5236\u8868\u793a\u6570\u5b57\u524d\u5fc5\u987b\u52a0\u4e0a 0x*\/<\/span><\/li>\n<li><span class=\"\">float\u00a0\uff08\u6d6e\u70b9\u578b, \u4e5f\u79f0\u4f5c\u00a0double)<\/span>\n<p><span class=\"\">\/*\u572832 \u4f4d\u64cd\u4f5c\u7cfb\u7edf\u4e2d\u7684\u6709\u6548\u8303\u56f4\u4e3a\uff1a1.7E-308~1.7E+308*\/<\/span><\/li>\n<li><span class=\"\">string\u00a0\uff08\u5b57\u7b26\u4e32\uff09<\/span>\n<p><span class=\"\">\/*\u5b57\u7b26\u578b\u53d8\u91cf\u4e0d\u540c\u4e8e\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u6709\u5b57\u7b26\u4e0e\u5b57\u7b26\u4e32\u4e4b\u5206\uff0c\u5728PHP \u4e2d\uff0c\u7edf\u4e00\u4f7f\u7528\u5b57\u7b26\u578b\u53d8\u91cf\u6765\u5b9a\u4e49\u5b57\u7b26\u6216\u8005\u5b57\u7b26\u4e32\u3002*\/<\/span><\/li>\n<\/ul>\n<p class=\"\">\u4e24\u79cd\u590d\u5408\u7c7b\u578b\uff1a<\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span class=\"\">array\u00a0\uff08\u6570\u7ec4\uff09<\/span>\n<p><span class=\"\">\/*\u6570\u7ec4\u578b\u53d8\u91cf\u662f\u4e00\u79cd\u6bd4\u8f83\u7279\u6b8a\u7684\u53d8\u91cf\u7c7b\u578b*\/<\/span><\/li>\n<li><span class=\"\">object\u00a0\uff08\u5bf9\u8c61\uff09<\/span>\n<p><span class=\"\">\/*\u5bf9\u8c61\u4e5f\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7c7b\u578b\u3002\u8981\u521b\u5efaobject\u53d8\u91cf\uff0c\u8bf7\u4f7f\u7528 new \u5173\u952e\u5b57\u3002*\/<\/span><\/li>\n<\/ul>\n<p class=\"\">\u4e24\u79cd\u7279\u6b8a\u7c7b\u578b\uff1a<\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span class=\"\">resource\u3000\uff08\u8d44\u6e90\uff09<\/span>\n<p><span class=\"\">\/*\u6e90\u662f\u4e00\u79cd\u7279\u6b8a\u53d8\u91cf\uff0c\u4fdd\u5b58\u4e86\u5230\u5916\u90e8\u8d44\u6e90\u7684\u4e00\u4e2a\u5f15\u7528\u3002\u8d44\u6e90\u662f\u901a\u8fc7\u4e13\u95e8\u7684\u51fd\u6570\u6765\u5efa\u7acb\u548c\u4f7f\u7528\u7684*\/<\/span><\/li>\n<li><span class=\"\">NULL\u3000\uff08NULL\uff09<\/span>\n<p><span class=\"\">\/*NULL \u7c7b\u578b\u552f\u4e00\u7684\u503c\u5c31\u662f NULL*\/<\/span><\/li>\n<\/ul>\n<p><strong class=\"\">Note<\/strong>:<\/p>\n<ul class=\"list-paddingleft-2\">\n<li><span class=\"\">\u5982\u679c\u60f3\u67e5\u770b\u67d0\u4e2a\u8868\u8fbe\u5f0f\u7684\u503c\u548c\u7c7b\u578b\uff0c\u7528\u00a0var_dump()\u3002<\/span><\/li>\n<li>\n<p class=\"\">\u5982\u679c\u53ea\u662f\u60f3\u5f97\u5230\u4e00\u4e2a\u6613\u8bfb\u61c2\u7684\u7c7b\u578b\u7684\u8868\u8fbe\u65b9\u5f0f\u7528\u4e8e\u8c03\u8bd5\uff0c\u7528\u00a0<span class=\"\">gettype()<\/span>\u3002<\/p>\n<\/li>\n<li>\n<p class=\"\"><span class=\"\">\u5982\u679c<\/span>\u8981\u67e5\u770b\u67d0\u4e2a\u7c7b\u578b\uff0c<em class=\"\">\u4e0d\u8981<\/em>\u7528\u00a0<span class=\"\">gettype()<\/span>\uff0c\u800c\u7528\u00a0<em>is_<span class=\"\">type<\/span><\/em>\u00a0\u51fd\u6570\u3002<\/p>\n<\/li>\n<li>\n<p class=\"\">\u5982\u679c\u8981\u5c06\u4e00\u4e2a\u53d8\u91cf\u5f3a\u5236\u8f6c\u6362\u4e3a\u67d0\u7c7b\u578b\uff0c\u53ef\u4ee5\u5bf9\u5176\u4f7f\u7528\u5f3a\u5236\u8f6c\u6362\u6216\u8005\u00a0<span class=\"\">settype()<\/span>\u00a0\u51fd\u6570\u3002<\/p>\n<\/li>\n<li>\n<p class=\"\">\u6ce8\u610f\u53d8\u91cf\u6839\u636e\u5176\u5f53\u65f6\u7684\u7c7b\u578b\u5728\u7279\u5b9a\u573a\u5408\u4e0b\u4f1a\u8868\u73b0\u51fa\u4e0d\u540c\u7684\u503c\uff08<a href=\"https:\/\/mp.weixin.qq.com\/s?timestamp=1500616420&amp;src=3&amp;ver=1&amp;signature=cnJvnj7eVaej9vBLeMgJL51kjZTjZv0RHrCpTDOAOuRmRcKapuxI2ZP5YG6wuvkOt-IYr9D6RfbwdUcauVtQJxwOeKDAEEN1k-GIMfd35jCXz7vSqxg0QthGduhEfCgT*yut9QCiuRuehlOSUn0McmTfejvHX73hUQ2RY30O8aU=\">\u7c7b\u578b\u620f\u6cd5<\/a>\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u8303\u4f8b\uff0c\u4ee3\u7801\u5982\u4e0b:<br \/>\n&lt;?php<br \/>\n$a_bool = TRUE; \/\/ a boolean<br \/>\n$a_str = &#8220;foo&#8221;; \/\/ a string<br \/>\n$a_str2 = &#8216;foo&#8217;; \/\/ a string<br \/>\n$an_int = 12; \/\/ an integer<\/p>\n<p>echo gettype($a_bool); \/\/ prints out: boolean<br \/>\necho gettype($a_str); \/\/ prints out: string<\/p>\n<p>\/\/ If this is an integer, increment it by four<br \/>\nif (is_int($an_int)) {<br \/>\n$an_int += 4;<br \/>\n}<\/p>\n<p>\/\/ If $bool is a string, print it out \uff0cdoes not print out anything<br \/>\nif (is_string($a_bool)) {<br \/>\necho &#8220;String: $a_bool&#8221;;<br \/>\n}<\/p>\n<p>?&gt;<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>PHP \u652f\u63018\u79cd\u57fa\u672c\u7684\u6570\u636e\u7c7b\u578b,\u5b66\u4e60php\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e0b\u3002 \u56db\u79cd\u6807\u91cf\u7c7b\u578b\uff1a boolean\u00a0\uff08\u5e03\u5c14\u578b\uff0c\u903b\u8f91\u7c7b &#8230; <a title=\"PHP \u516b\u79cd\u57fa\u672c\u7684\u6570\u636e\u7c7b\u578b\u5c0f\u7ed3\" class=\"read-more\" href=\"https:\/\/cn.hostease.com\/xueyuan\/jishu\/chengxujiaoben\/php\/php-%e5%85%ab%e7%a7%8d%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e5%b0%8f%e7%bb%93\/\" aria-label=\"\u9605\u8bfb PHP \u516b\u79cd\u57fa\u672c\u7684\u6570\u636e\u7c7b\u578b\u5c0f\u7ed3\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[1684,1682,1683],"class_list":{"0":"post-2484","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-php","7":"tag-php","9":"tag-1683"},"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2484","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=2484"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2484\/revisions"}],"predecessor-version":[{"id":2485,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/2484\/revisions\/2485"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=2484"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=2484"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=2484"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}