PHP\u4e2d\u83b7\u53d6\u6587\u4ef6\u6269\u5c55\u540d\u7684N\u79cd\u65b9\u6cd5
\n\u4ece\u7f51\u4e0a\u6536\u7f57\u7684\uff0c\u57fa\u672c\u4e0a\u5c31\u4ee5\u4e0b\u8fd9\u51e0\u79cd\u65b9\u5f0f\uff1a
\n\u7b2c1\u79cd\u65b9\u6cd5\uff1a<\/p>\n
function get_extension($file)\n{\nsubstr(strrchr($file, '.'), 1);\n}<\/pre>\n
\n\u7b2c2\u79cd\u65b9\u6cd5\uff1a<\/p>\n
function get_extension($file)\n{\nreturn substr($file, strrpos($file, '.')+1);\n}<\/pre>\n
\n\u7b2c3\u79cd\u65b9\u6cd5\uff1a<\/p>\n
function get_extension($file)\n{\nreturn end(explode('.', $file));\n}<\/pre>\n
\n\u7b2c4\u79cd\u65b9\u6cd5\uff1a<\/p>\n
function get_extension($file)\n{\n$info = pathinfo($file);\nreturn $info['extension'];\n}<\/pre>\n
\n\u7b2c5\u79cd\u65b9\u6cd5\uff1a<\/p>\n
function get_extension($file)\n{\nreturn pathinfo($file, PATHINFO_EXTENSION);\n}<\/pre>\n
\n\u4ee5\u4e0a\u51e0\u79cd\u65b9\u5f0f\u7c97\u770b\u4e86\u4e00\u4e0b\uff0c\u597d\u50cf\u90fd\u884c\uff0c\u7279\u522b\u662f1\u30012\u79cd\u65b9\u6cd5\uff0c\u5728\u6211\u4e0d\u77e5\u9053pathinfo\u6709\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e4b\u524d\u4e5f\u4e00\u76f4\u5728\u7528\u3002\u4f46\u662f\u4ed4\u7ec6\u8003\u8651\u4e00\u4e0b\uff0c\u524d\u56db\u79cd\u65b9\u6cd5\u90fd\u6709\u5404\u79cd\u5404\u6837\u7684\u6bdb\u75c5\u3002\u8981\u60f3\u5b8c\u5168\u6b63\u786e\u83b7\u53d6\u6587\u4ef6\u7684\u6269\u5c55\u540d\uff0c\u5fc5\u987b\u8981\u80fd\u5904\u7406\u4ee5\u4e0b\u4e09\u79cd\u7279\u6b8a\u60c5\u51b5\u3002
\n\u6ca1\u6709\u6587\u4ef6\u6269\u5c55\u540d
\n\u8def\u5f84\u4e2d\u5305\u542b\u4e86\u5b57\u7b26.\uff0c\u5982\/home\/test.d\/test.txt
\n\u8def\u5f84\u4e2d\u5305\u542b\u4e86\u5b57\u7b26.\uff0c\u4f46\u6587\u4ef6\u6ca1\u6709\u6269\u5c55\u540d\u3002\u5982\/home\/test.d\/test
\n\u5f88\u660e\u663e\uff1a1\u30012\u4e0d\u80fd\u5904\u7406\u7b2c\u4e09\u79cd\u60c5\u51b5\uff0c3\u4e0d\u80fd\u6b63\u786e\u5904\u7406\u7b2c\u4e00\u4e09\u79cd\u60c5\u51b5\u30024\u53ef\u4ee5\u6b63\u786e\u5904\u7406\uff0c\u4f46\u662f\u5728\u4e0d\u5b58\u5728\u6269\u5c55\u540d\u65f6\uff0c\u4f1a\u53d1\u51fa\u4e00\u4e2a\u8b66\u544a\u3002\u53ea\u6709\u7b2c5\u79cd\u65b9\u6cd5\u624d\u662f\u6700\u6b63\u786e\u7684\u65b9\u6cd5\u3002\u987a\u4fbf\u770b\u4e00\u4e0bpathinfo\u65b9\u6cd5\u3002\u5b98\u7f51\u4e0a\u4ecb\u7ecd\u5982\u4e0b\uff1a<\/p>\n
$file_path = pathinfo('\/www\/htdocs\/your_image.jpg');\n\necho \"$file_path ['dirname']n\";\necho \"$file_path ['basename']n\";\necho \"$file_path ['extension']n\";\necho \"$file_path ['filename']n\"; \/\/ only in PHP 5.2+<\/pre>\n <\/p>\n
\u5b83\u4f1a\u8fd4\u56de\u4e00\u4e2a\u6570\u7ec4\uff0c\u5305\u542b\u6700\u591a\u56db\u4e2a\u5143\u7d20\uff0c\u4f46\u662f\u5e76\u4e0d\u4f1a\u4e00\u76f4\u6709\u56db\u4e2a\uff0c\u6bd4\u5982\u5728\u6ca1\u6709\u6269\u5c55\u540d\u7684\u60c5\u51b5\u4e0b\uff0c\u5c31\u4e0d\u4f1a\u6709extension\u5143\u7d20\u5b58\u5728\uff0c\u6240\u4ee5\u7b2c4\u79cd\u65b9\u6cd5\u624d\u4f1a\u53d1\u73b0\u8b66\u544a\u3002\u4f46\u662fphpinfo\u8fd8\u652f\u6301\u7b2c\u4e8c\u4e2a\u53c2\u6570\u3002\u53ef\u4ee5\u4f20\u9012\u4e00\u4e2a\u5e38\u91cf\uff0c\u6307\u5b9a\u8fd4\u56de\u67d0\u4e00\u90e8\u5206\u7684\u6570\u636e\uff1a<\/p>\n
PATHINFO_DIRNAME - \u76ee\u5f55\nPATHINFO_BASENAME - \u6587\u4ef6\u540d\uff08\u542b\u6269\u5c55\u540d\uff09\nPATHINFO_EXTENSION - \u6269\u5c55\u540d\nPATHINFO_FILENAME - \u6587\u4ef6\u540d\uff08\u4e0d\u542b\u6269\u5c55\u540d\uff0cPHP>5.2\uff09<\/pre>\n
\n\u8fd9\u56db\u4e2a\u5e38\u91cf\u7684\u503c\u5206\u522b\u662f1\u30012\u30014\u30018\uff0c\u521a\u5f00\u59cb\u6211\u8fd8\u4ee5\u4e3a\u53ef\u4ee5\u901a\u8fc7\u6216\u8fd0\u7b97\u6307\u5b9a\u591a\u4e2a\uff1a<\/p>\n
pathinfo($file, PATHINFO_EXTENSION | PATHINFO_FILENAME);<\/pre>\n
\n\u540e\u6765\u53d1\u73b0\u8fd9\u6837\u4e0d\u884c\uff0c\u8fd9\u53ea\u4f1a\u8fd4\u56de\u51e0\u4e2a\u8fdb\u884c\u6216\u8fd0\u7b97\u5e38\u91cf\u4e2d\u6700\u5c0f\u7684\u90a3\u4e2a\u3002\u4e5f\u5c31\u662f\u56db\u4e2a\u6807\u5fd7\u4f4d\u4e2d\u6700\u5c0f\u4f4d\u4e3a1\u7684\u5e38\u91cf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
PHP\u4e2d\u83b7\u53d6\u6587\u4ef6\u6269\u5c55\u540d\u7684N\u79cd\u65b9\u6cd5 \u4ece\u7f51\u4e0a\u6536\u7f57\u7684\uff0c\u57fa\u672c\u4e0a\u5c31\u4ee5\u4e0b\u8fd9\u51e0\u79cd\u65b9\u5f0f\uff1a \u7b2c1\u79cd\u65b9\u6cd5\uff1a function ge […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-26","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/26","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=26"}],"version-history":[{"count":1,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/26\/revisions"}],"predecessor-version":[{"id":455,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=\/wp\/v2\/posts\/26\/revisions\/455"}],"wp:attachment":[{"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=26"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=26"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.siediyer.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=26"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}