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                ## 路徑處理 *string dirname ( string $path )* 功能:返回路徑中的目錄部分 ``` <?php echo dirname("/home/koogua/foo.txt") . PHP_EOL; echo dirname("/home/koogua") . PHP_EOL; echo dirname("/") . PHP_EOL; echo dirname(__FILE__) . PHP_EOL; ?> ``` *string basename ( string $path [, string $suffix ] )* 功能:返回路徑中的文件名部分 ``` <?php echo basename("/home/koogua/foo.txt") . PHP_EOL; echo basename("/home/koogua") . PHP_EOL; echo basename("/") . PHP_EOL; echo basename(__FILE__) . PHP_EOL; ?> ``` *mixed pathinfo ( string $path [, int $options ] )* 功能: 返回文件路徑的信息 options 可選項: * PATHINFO_DIRNAME * PATHINFO_BASENAME * PATHINFO_EXTENSION * PATHINFO_FILENAME ``` <?php $pathinfo = pathinfo(__FILE__); print_r($pathinfo); echo 'basename :' . pathinfo(__FILE__, PATHINFO_BASENAME) . PHP_EOL; ?> ``` *string realpath ( string $path )* 功能: 返回規范化的絕對路徑名 ``` <?php echo realpath() . PHP_EOL; chdir('/home/koogua/tmp/1984'); echo realpath('../../') . PHP_EOL; ?> ```
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