php判断文件是否可写：
http://www.bkjia.com/phpjc/486050.htmlwww.bkjia.comtruehttp://www.bkjia.com/phpjc/486050.htmltecharticlephp判断文件是否可写： ?php $filename = test.txt; if (is_writable($filename)) { echo the file is writable; } else { echo the file is not writable; } ?...