我使用scandir和foreach循环向用户显示目录中的文件列表。我的代码如下:
$dir = scandir('/user1/caravans/public_html/wordpress/wp-content/uploads/wpallimport/files');
foreach($dir as $directory)
{
echo "<br/><input type='checkbox' name='"File[]'" value='$directory'/>$directory<br>";
}
问题是,脚本也会回声"."answers".."(没有语音标记),有没有一种优雅的方法可以去除这些?短表达式或正则表达式。感谢
如果目录是.
或..
,请继续。我建议查看此处的控制结构
$dir = scandir('/user1/caravans/public_html/wordpress/wp-content/uploads/wpallimport/files');
foreach($dir as $directory) {
if( $directory == '.' || $directory == '..' ) {
// directory is . or ..
// continue will directly move on with the next value in $directory
continue;
}
echo "<br/><input type='checkbox' name='"File[]'" value='$directory'/>$directory<br>";
}
取而代之的是:
if( $directory == '.' || $directory == '..' ) {
// directory is . or ..
// continue will directly move on with the next value in $directory
continue;
}
你可以使用它的一个简短版本:
if( $directory == '.' || $directory == '..' ) continue;
您可以使用array_diff
:消除这些目录
$dir = scandir($path);
$dir = array_diff($dir, array('.', '..'));
foreach($dir as $entry) {
// ...
}
除了swidmann的答案之外,另一个解决方案是简单地删除"answers".."在对它们进行迭代之前。
改编自http://php.net/manual/en/function.scandir.php#107215
$path = '/user1/caravans/public_html/wordpress/wp-content/uploads/wpallimport/files';
$exclude = ['.', '..'];
$dir = array_diff(scandir($path), $exclude);
foreach ($dir as $directory) {
// ...
}
这样,如果将来需要,您还可以轻松地将其他目录和文件添加到排除列表中。