Random Number after Name

Hi, I am rewriting a file uploading script in php. I would like to add a string of random number after the file name. May i know how can it be done ?

example: $filename=mypicture_jpg(random number)

Below is my current code:

$filename = $_FILES['upfile']['name'];
$filename= str_replace(".","_",$filename);

PHP:

 

int rand ( [int min, int max])


If called without the optional min, max arguments rand() returns a pseudo-random integer between 0 and RAND_MAX. If you want a random number between 5 and 15 (inclusive), for example, use rand (5, 15).


so basically you can just do something like

$filename = $filename.rand(1000,5000);

Code (markup):

 

Thanks. That's exactly what i want. I have another problem now, sorry i am new in php = )

i cant change the "space" into "_" ? Anything wrong this these line ?

$filename = $_FILES['upfile']['name'];
$filename= str_replace(" ","_",$filename);
$filename= str_replace(".","_",$filename);
$filename = $filename.rand(1000,9999);

PHP:

 

Got it fixed. I just change the line to

$filename= str_replace(array(" ","."),"_",$filename);

PHP:

Stupid me.

Thanks!