Solve the error in mkdir in php

Mkdir cannot be created if the parent directory does not exist. Note this. It takes a lot of time for me to upload images as Wang Rong said. Second knowledge point: return the actual path function of the document: [php] functionfileDir () {$ arrexplode (& amp; #39;/& amp; #39 ;, $ _ SERVER [SCRIPT_FILENAM...

Mkdir cannot be created if the parent directory does not exist. Note this. It takes a lot of time for me to upload images as Wang Rong said.

Second knowledge point: return the actual path function of the document:

[Php]
Function fileDir (){
$ Arr = explode ('/', $ _ SERVER [SCRIPT_FILENAME]);
For ($ k = 0; $ k $ ArrNew [$ k] = $ arr [$ k];
}
Return implode ('/', $ arrNew );
}