php源码之检测文件是否可读可写(is_writable is_readable实例)

php 源码之判断文件是否可读：

Is the file readable: is_readable()

$file = "test.txt";

outputFileTestInfo( $file );

function outputFileTestInfo( $f ){

if ( ! file_exists( $f ) ){

print "$f does not exist
";

return;

}

print "$f is ".(is_readable( $f )?"":"not ")."readable
";

}

?>

php 源码之判断文件是否可写：

Is the file writable: is_writable()

$file = "test.txt";

outputFileTestInfo( $file );

function outputFileTestInfo( $f ){

if ( ! file_exists( $f ) ){

print "$f does not exist
";

return;

}

/* http://www.manongjc.com/article/1370.html */

print "$f is ".(is_writable( $f )?"":"not ")."writable
";

}

?>

（编辑：安卓应用网）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!