时间:2021-07-01 10:21:17 帮助过:6人阅读
function extend_1($file_name) { $retval=""; $pt=strrpos($file_name, "."); if ($pt) $retval=substr($file_name, $pt+1, strlen($file_name) - $pt); return ($retval); } ?> |
方法二:
function extend_2($file_name) { $extend = pathinfo($file_name); $extend = strtolower($extend["extension"]); return $extend; } |
方法三:
function extend_3($file_name) { $extend =explode("." , $file_name); $va=count($extend)-1; return $extend[$va]; } |
http://www.bkjia.com/PHPjc/371472.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/371472.htmlTechArticle方法一: ?php function extend_1($file_name) { $retval=; $pt=strrpos($file_name, .); if ($pt) $retval=substr($file_name, $pt+1, strlen($file_name) - $pt); return ($retval); } ? 方...