一、在本目录下新建目录 ?php $dir_url = 'aaa/'; if(!is_dir($dir_url)) { mkdir($dir_url, 0777); } ? 二、在级联创建目录 ?php $dir_url = '../../usr/aaa/'; if(!is_dir($dir_url)) { mkdir($dir_url, 0777, true); } ? 默认为false，true为级联创建目录
一、在本目录下新建目录
$dir_url = 'aaa/';
if(!is_dir($dir_url)) {
mkdir($dir_url, 0777);
}
?>
二、在级联创建目录
$dir_url = '../../usr/aaa/';
if(!is_dir($dir_url)) {
mkdir($dir_url, 0777, true);
}
?>
默认为false，true为级联创建目录，为true是才能新建成功，需注意。
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