php create file in a new directory

Question

I need create a new txt file in a new directory. I do thi code

$path="dir1";
mkdir("$path",0777);

$path1="dir1/dir2";
mkdir("$path1",0777);

$path2="dir1/dir2/dir3";
mkdir("$path2",0777);


$percorso=$path.$path1.$path2;

$var=fopen($percorso."/nome_file.txt","a+");
fwrite($var, "stringa di prova");

It creates the 3 directory dir1/dir2/dir3 on my server but not the file. why?

Answer 1

$path="dir1";
mkdir("$path",0777);

$path1="dir1/dir2";
mkdir("$path1",0777);

$path2="dir1/dir2/dir3";
mkdir("$path2",0777);


$percorso=$path2;

$var=fopen($percorso."/nome_file.txt","a+");
fwrite($var, "stringa di prova");

Answer 2

$path2 witll be sufficient

$var=fopen($path2."/nome_file.txt","a+");

Answer 3

Because if $path="dir1" and $path1="dir1/dir2" and $path2="dir1/dir2/dir3", the code $percorso=$path.$path1.$path2 will give you :

dir1dir1/dir2dir1/dir2/dir3

Just change
$var=fopen($percorso."/nome_file.txt","a+");
to
$var=fopen($path2."/nome_file.txt","a+");