{"id":105,"date":"2022-05-09T10:55:19","date_gmt":"2022-05-09T02:55:19","guid":{"rendered":"https:\/\/www.lcettsg.cn\/code\/?p=105"},"modified":"2022-05-24T13:31:26","modified_gmt":"2022-05-24T05:31:26","slug":"thinkphp5-0%e6%ba%90%e7%a0%81%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/www.lcettsg.cn\/code\/?p=105","title":{"rendered":"thinkphp5.0\u6e90\u7801\u5b66\u4e60\u7b14\u8bb0"},"content":{"rendered":"\n<h2 class=\"has-x-large-font-size wp-block-heading\" style=\"font-style:normal;font-weight:700\">1.__DIR__:\u7cfb\u7edf\u9884\u5b9a\u4e49\u9b54\u672f\u53d8\u91cf<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">2.define\u3001const\u5b9a\u4e49\u5e38\u91cf<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">3.include\u3001requre\u5f15\u7528\u6587\u4ef6<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">4.microtime()<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-1024x607.png\" alt=\"\" class=\"wp-image-107\" width=\"650\" height=\"385\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-1024x607.png 1024w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-300x178.png 300w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-768x455.png 768w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image.png 1268w\" sizes=\"(max-width: 650px) 100vw, 650px\" \/><\/figure>\n\n\n\n<pre class=\"wp-block-code has-background-color has-vertical-secondary-to-background-gradient-background has-text-color has-background\" style=\"border-radius:2px;border-style:solid\"><code>var_dump(microtime());\n\/\/\u8f93\u51fastring(21) \"0.39244700 1652063929\"<\/code><\/pre>\n\n\n\n<p>5.php\u8f93\u51fa<\/p>\n\n\n\n<p><a href=\"https:\/\/www.cnblogs.com\/perseverancevictory\/p\/4254796.html\">https:\/\/www.cnblogs.com\/perseverancevictory\/p\/4254796.html<\/a><\/p>\n\n\n\n<p>6.memory_get_usage():<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1415\" height=\"1295\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-1.png\" alt=\"\" class=\"wp-image-114\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-1.png 1415w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-1-1000x915.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-1-500x458.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-1-768x703.png 768w\" sizes=\"(max-width: 1415px) 100vw, 1415px\" \/><\/figure>\n\n\n\n<p>7.defined()\u51fd\u6570<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1398\" height=\"1455\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-2.png\" alt=\"\" class=\"wp-image-117\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-2.png 1398w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-2-961x1000.png 961w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-2-480x500.png 480w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-2-768x799.png 768w\" sizes=\"(max-width: 1398px) 100vw, 1398px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">8.strtr<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1414\" height=\"861\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-3.png\" alt=\"\" class=\"wp-image-119\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-3.png 1414w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-3-1000x609.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-3-500x304.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-3-768x468.png 768w\" sizes=\"(max-width: 1414px) 100vw, 1414px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">9.property_exists<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1397\" height=\"566\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-4.png\" alt=\"\" class=\"wp-image-137\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-4.png 1397w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-4-1000x405.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-4-500x203.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-4-768x311.png 768w\" sizes=\"(max-width: 1397px) 100vw, 1397px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">10.null<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1138\" height=\"791\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-5.png\" alt=\"\" class=\"wp-image-138\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-5.png 1138w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-5-1000x695.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-5-500x348.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-5-768x534.png 768w\" sizes=\"(max-width: 1138px) 100vw, 1138px\" \/><\/figure>\n\n\n\n<p>\u7ecf\u6d4b\u8bd5\uff0c\u7528is_null()\u5224\u65ad\u4e00\u4e2a\u672a\u58f0\u660e\u7684\u53d8\u91cf\uff0c\u5176\u503c\u4e3atrue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">11.file_get_contents:<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1136\" height=\"893\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-6.png\" alt=\"\" class=\"wp-image-140\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-6.png 1136w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-6-1000x786.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-6-500x393.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-6-768x604.png 768w\" sizes=\"(max-width: 1136px) 100vw, 1136px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">12.php:\/\/input<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1122\" height=\"603\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-7.png\" alt=\"\" class=\"wp-image-141\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-7.png 1122w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-7-1000x537.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-7-500x269.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-7-768x413.png 768w\" sizes=\"(max-width: 1122px) 100vw, 1122px\" \/><\/figure>\n\n\n\n<p>13.new self() \u4e0e new static()\u7684\u533a\u522b<\/p>\n\n\n\n<p><a href=\"https:\/\/blog.csdn.net\/weixin_29186249\/article\/details\/115157295\">https:\/\/blog.csdn.net\/weixin_29186249\/article\/details\/115157295<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">14.php\u9884\u5b9a\u4e49\u6570\u7ec4<\/h2>\n\n\n\n<p>15.global:<\/p>\n\n\n\n<p>16.basename:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1245\" height=\"1120\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-8.png\" alt=\"\" class=\"wp-image-148\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-8.png 1245w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-8-1000x900.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-8-500x450.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-8-768x691.png 768w\" sizes=\"(max-width: 1245px) 100vw, 1245px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1250\" height=\"901\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-9.png\" alt=\"\" class=\"wp-image-149\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-9.png 1250w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-9-1000x721.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-9-500x360.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-9-768x554.png 768w\" sizes=\"(max-width: 1250px) 100vw, 1250px\" \/><\/figure>\n\n\n\n<p>17.str_replace<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1267\" height=\"1441\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-10.png\" alt=\"\" class=\"wp-image-150\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-10.png 1267w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-10-879x1000.png 879w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-10-440x500.png 440w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-10-768x873.png 768w\" sizes=\"(max-width: 1267px) 100vw, 1267px\" \/><\/figure>\n\n\n\n<p>18.rtrim():<\/p>\n\n\n\n<p>19.function_exists()<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1585\" height=\"954\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-13.png\" alt=\"\" class=\"wp-image-161\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-13.png 1585w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-13-1000x602.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-13-500x301.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-13-768x462.png 768w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-13-1536x925.png 1536w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-13-1568x944.png 1568w\" sizes=\"(max-width: 1585px) 100vw, 1585px\" \/><\/figure>\n\n\n\n<p>20.apache_request_header()<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1568\" height=\"488\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-14.png\" alt=\"\" class=\"wp-image-163\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-14.png 1568w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-14-1000x311.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-14-500x156.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-14-768x239.png 768w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-14-1536x478.png 1536w\" sizes=\"(max-width: 1568px) 100vw, 1568px\" \/><\/figure>\n\n\n\n<p>21.array_change_key_case():<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1566\" height=\"1257\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-15.png\" alt=\"\" class=\"wp-image-166\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-15.png 1566w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-15-1000x803.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-15-500x401.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-15-768x616.png 768w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-15-1536x1233.png 1536w\" sizes=\"(max-width: 1566px) 100vw, 1566px\" \/><\/figure>\n\n\n\n<p>22.reset()<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1563\" height=\"935\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-16.png\" alt=\"\" class=\"wp-image-168\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-16.png 1563w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-16-1000x598.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-16-500x299.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-16-768x459.png 768w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-16-1536x919.png 1536w\" sizes=\"(max-width: 1563px) 100vw, 1563px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>23.gmdate()<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1563\" height=\"1048\" src=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-17.png\" alt=\"\" class=\"wp-image-201\" srcset=\"https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-17.png 1563w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-17-1000x671.png 1000w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-17-500x335.png 500w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-17-768x515.png 768w, https:\/\/www.lcettsg.cn\/code\/wp-content\/uploads\/2022\/05\/image-17-1536x1030.png 1536w\" sizes=\"(max-width: 1563px) 100vw, 1563px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>1.__DIR__:\u7cfb\u7edf\u9884\u5b9a\u4e49\u9b54\u672f\u53d8\u91cf 2.define\u3001const\u5b9a\u4e49\u5e38\u91cf 3.include\u3001requre [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-105","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/105"}],"collection":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=105"}],"version-history":[{"count":22,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/105\/revisions"}],"predecessor-version":[{"id":204,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=\/wp\/v2\/posts\/105\/revisions\/204"}],"wp:attachment":[{"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=105"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=105"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lcettsg.cn\/code\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}