RecursiveDirectoryIterator

RecursiveDirectoryIterator

/**
* @author Funsion Wu
* @abstract SPL使用案例,全国首发,技术分享,欢迎转帖
*/
class Dir extends RecursiveDirectoryIterator {
const CHILD_FIRST = RecursiveIteratorIterator::CHILD_FIRST ;
const LEAVES_ONLY = RecursiveIteratorIterator::LEAVES_ONLY ;
const SELF_FIRST = RecursiveIteratorIterator::SELF_FIRST ;
/* ideas:将Dir类设置为不变类,无状态类 */
private static function getDirIterator( $dir, $mode=self::LEAVES_ONLY ) {
if( !file_exists($dir) ){ exit ; }
$dirIterator = new RecursiveDirectoryIterator($dir);
$objIterator = new RecursiveIteratorIterator( $dirIterator, $mode );
return $objIterator;
}
/**
* 递归的删除目录
+ ----------------------------------------------------- +
* @param $dir 要删除的目录
* @param $delSelf 决定删除目录or清空目录,默认删除目录
*/
public static function delDir( $dir, $delSelf=true ) {
$dirIterator = self::getDirIterator($dir, self::CHILD_FIRST);
foreach ( $dirIterator as $file ) {
if ( $file->isDir() ) {
@ rmdir( $file->getRealPath() );
}else{
@ unlink( $file->getRealPath() );
}
}
if( $delSelf ) { @ rmdir($dir); }
}
/**
* 递归的列出目录,遍历目录
+ -------------------------- +
* @param $dir 要操作的目录
*/
public static function listDir ( $dir ) {
$dirIterator = self::getDirIterator( $dir, self::SELF_FIRST );
foreach ( $dirIterator as $file ) {
$filepath = str_replace('\\' , '/' , $file->getPath() );
$deep = substr_count( $filepath , '/' );
if( $file->isDir() ) {
$str .= '<div style="color:blue;margin-left:'. 35*$deep .'px"> + ' ;
$str .= $file->getBasename() .'</div>' ;
}elseif( $file->isFile() ){
$str .= '<div style="margin-left:'. 35*$deep .'px">' . $file->getBasename() .'</div>';
}
}
return $str ;
}
/**
* 统计目录的信息(总字节数,文件数,目录数)
+ -----------------------------=----------- +
* @param $dir 要操作的目录
* @return 由目录信息组成的数组
*/
public static function countDir( $dir ) {
$countDir = $countFiles = $size = 0 ;
$dirIterator = self::getDirIterator( $dir, self::SELF_FIRST );
foreach ( $dirIterator as $file ) {
if( $file->isDir() ) {
$countDir++ ;
}elseif( $file->isFile() ){
$countFiles++ ;
$size += $file->getSize() ;
}
}
return array( 'countDir'=>$countDir, 'countFiles'=>$countFiles, 'size'=>$size.' Byte' );
}
/**
* 递归的创建目录
+ -------------------- +
* @param $dir 要创建的目录
* @param $mode 所创建目录的读写权限
*/
public static function makeDir( $dir, $mode=0644 ) {
return mkdir( $dir, $mode, true );
}
} /* ========================== 调用方法 =========================== */ // Dir::delDir('./need_del_dir');
// echo Dir::listDir('tools');
// var_dump( Dir::countDir('tools') );
// Dir::makeDir( 'aaa/ccc/ddd/eee/fff' );
04-16 14:56