Write a simple PHP build folder Code _php Foundation

First get the path to the current directory, and then determine whether the folder exists, does not exist to create.

<?php

define (' Dir_root ', str_replace (' \ n ', '/', dirname (__file__)); Get the current file physical path
$tmp _file_path = dir_ ROOT. ' /tmp/';//Add the path of the TMP directory to the root directory
if (Is_dir ($tmp _file_path))
	echo tmp folder exists! ";
else
{
	mkdir ($tmp _file_path, 0700);//If no TMP directory exists, the
	echo "tmp folder does not exist, try to establish success!" <br>//did not detect whether the build succeeded
	echo "tmp directory is". $tmp _file_path
;
>