PHP用迭代方法和递归方法创建级联目录(学习用,开发中应该写mkdir('./a/b/c/d/e',0777,true)
[php]
/*
用迭代的方法递归创建目录
其实在PHP5.0.0之后mkdir就已经能递归创建目录了。
这里主要是自己学习迭代，所以拿创建级联目录开刀了。
开发中应该写mkdir('./a/b/c/d/e',0777,true);
官方说明：
在 PHP 中可以调用递归函数。
但是要避免递归函数／方法调用超过 100-200 层，
因为可能会使堆栈崩溃从而使当前脚本终止。
*/
function it_mk_dir($path){
//定义一个数组，用来存放需要工作创建目录的任务
$arr = array();
//如果要创建的目录不存在，则表示有任务追加
while(!is_dir($path)){
array_unshift($arr,$path);
//将任务追加后取父目录
$path = dirname($path);
}
//如果没有任务（即：需要创建的目录已经存在）
if(empty($arr)){
return true;
}
//否则开始执行任务
foreach($arr as $k => $v){
//由上面的array_unshift压入方式，可直接这样调用
mkdir($v) ? print('创建'.$v.'目录成功!
'):print('创建失败->'.$v.'
');
}
return true;
}
[php]
/*
递归方法创建
*/
function mk_dir($path){
if(is_dir($path)){
return true;
}
//父目录存在或者是需要创建才能调用mkdir
return is_dir(dirname($path)) || mk_dir(dirname($path)) ? mkdir($path) : false;
}
it_mk_dir('./a/b/c/d/e/f/g');
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