{"id":3496,"date":"2018-06-08T21:19:30","date_gmt":"2018-06-08T13:19:30","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=3496"},"modified":"2018-06-08T21:19:30","modified_gmt":"2018-06-08T13:19:30","slug":"php-%e5%8f%af%e5%8f%98%e5%8f%98%e9%87%8f","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/chengxujiaoben\/php\/php-%e5%8f%af%e5%8f%98%e5%8f%98%e9%87%8f\/","title":{"rendered":"PHP \u53ef\u53d8\u53d8\u91cf"},"content":{"rendered":"<p>\u6709\u65f6\u5019\u4f7f\u7528\u53ef\u53d8\u53d8\u91cf\u540d\u662f\u5f88\u65b9\u4fbf\u7684\u3002\u5c31\u662f\u8bf4\uff0c\u4e00\u4e2a\u53d8\u91cf\u7684\u53d8\u91cf\u540d\u53ef\u4ee5\u52a8\u6001\u7684\u8bbe\u7f6e\u548c\u4f7f\u7528\u3002\u4e00\u4e2a\u666e\u901a\u7684\u53d8\u91cf\u901a\u8fc7\u58f0\u660e\u6765\u8bbe\u7f6e\uff0c\u4f8b\u5982\uff1a<br \/>\n<?php\n$a = 'hello';\n?><\/p>\n<p>\u4e00\u4e2a\u53ef\u53d8\u53d8\u91cf\u83b7\u53d6\u4e86\u4e00\u4e2a\u666e\u901a\u53d8\u91cf\u7684\u503c\u4f5c\u4e3a\u8fd9\u4e2a\u53ef\u53d8\u53d8\u91cf\u7684\u53d8\u91cf\u540d\u3002\u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d hello \u4f7f\u7528\u4e86\u4e24\u4e2a\u7f8e\u5143\u7b26\u53f7\uff08$\uff09\u4ee5\u540e\uff0c\u5c31\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u53ef\u53d8\u53d8\u91cf\u7684\u53d8\u91cf\u4e86\u3002\u4f8b\u5982\uff1a<br \/>\n<?php\n$$a = 'world';\n?><\/p>\n<p>\u8fd9\u65f6\uff0c\u4e24\u4e2a\u53d8\u91cf\u90fd\u88ab\u5b9a\u4e49\u4e86\uff1a$a \u7684\u5185\u5bb9\u662f\u201chello\u201d\u5e76\u4e14 $hello \u7684\u5185\u5bb9\u662f\u201cworld\u201d\u3002\u56e0\u6b64\uff0c\u4ee5\u4e0b\u8bed\u53e5\uff1a<br \/>\n<?php\necho \"$a ${$a}\";\n?><\/p>\n<p>\u4e0e\u4ee5\u4e0b\u8bed\u53e5\u8f93\u51fa\u5b8c\u5168\u76f8\u540c\u7684\u7ed3\u679c\uff1a<br \/>\n<?php\necho \"$a $hello\";\n?><\/p>\n<p>\u5b83\u4eec\u90fd\u4f1a\u8f93\u51fa\uff1ahello world\u3002<\/p>\n<p>\u8981\u5c06\u53ef\u53d8\u53d8\u91cf\u7528\u4e8e\u6570\u7ec4\uff0c\u5fc5\u987b\u89e3\u51b3\u4e00\u4e2a\u6a21\u68f1\u4e24\u53ef\u7684\u95ee\u9898\u3002\u8fd9\u5c31\u662f\u5f53\u5199\u4e0b $$a[1] \u65f6\uff0c\u89e3\u6790\u5668\u9700\u8981\u77e5\u9053\u662f\u60f3\u8981 $a[1] \u4f5c\u4e3a\u4e00\u4e2a\u53d8\u91cf\u5462\uff0c\u8fd8\u662f\u60f3\u8981$$a \u4f5c\u4e3a\u4e00\u4e2a\u53d8\u91cf\u5e76\u53d6\u51fa\u8be5\u53d8\u91cf\u4e2d\u7d22\u5f15\u4e3a [1] \u7684\u503c\u3002<\/p>\n<p>\u89e3\u51b3\u6b64\u95ee\u9898\u7684\u8bed\u6cd5\u662f\uff0c\u5bf9\u7b2c\u4e00\u79cd\u60c5\u51b5\u7528 ${$a[1]}\uff0c\u5bf9\u7b2c\u4e8c\u79cd\u60c5\u51b5\u7528 ${$a}[1]\u3002<\/p>\n<p>\u7c7b\u7684\u5c5e\u6027\u4e5f\u53ef\u4ee5\u901a\u8fc7\u53ef\u53d8\u5c5e\u6027\u540d\u6765\u8bbf\u95ee\u3002\u53ef\u53d8\u5c5e\u6027\u540d\u5c06\u5728\u8be5\u8c03\u7528\u6240\u5904\u7684\u8303\u56f4\u5185\u88ab\u89e3\u6790\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e $foo->$bar \u8868\u8fbe\u5f0f\uff0c<\/p>\n<p>\u5219\u4f1a\u5728\u672c\u5730\u8303\u56f4\u6765\u89e3\u6790 $bar \u5e76\u4e14\u5176\u503c\u5c06\u88ab\u7528\u4e8e $foo \u7684\u5c5e\u6027\u540d\u3002<\/p>\n<p>\u5bf9\u4e8e $bar \u662f\u6570\u7ec4\u5355\u5143\u65f6\u4e5f\u662f\u4e00\u6837\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6709\u65f6\u5019\u4f7f\u7528\u53ef\u53d8\u53d8\u91cf\u540d\u662f\u5f88\u65b9\u4fbf\u7684\u3002\u5c31\u662f\u8bf4\uff0c\u4e00\u4e2a\u53d8\u91cf\u7684\u53d8\u91cf\u540d\u53ef\u4ee5\u52a8\u6001\u7684\u8bbe\u7f6e\u548c\u4f7f\u7528\u3002\u4e00\u4e2a\u666e\u901a\u7684\u53d8\u91cf\u901a\u8fc7\u58f0\u660e\u6765\u8bbe\u7f6e\uff0c\u4f8b &#8230; <a title=\"PHP \u53ef\u53d8\u53d8\u91cf\" class=\"read-more\" href=\"https:\/\/cn.hostease.com\/xueyuan\/jishu\/chengxujiaoben\/php\/php-%e5%8f%af%e5%8f%98%e5%8f%98%e9%87%8f\/\" aria-label=\"\u9605\u8bfb PHP \u53ef\u53d8\u53d8\u91cf\">\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":[],"class_list":["post-3496","post","type-post","status-publish","format-standard","hentry","category-php"],"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\/3496","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=3496"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3496\/revisions"}],"predecessor-version":[{"id":3497,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/3496\/revisions\/3497"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=3496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=3496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=3496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}