I am new to PHP and want to generate unique 10 digits number for my SKU Number. I tried using a date with IP address and got a unique value first time. But after a refresh or saving product data I still have that same SKU number. Any Help?? My code is:
<?php
if(!empty($_POST)) {
.....my code......
}
else{
$stamp = date("Ymdhis");
$ip = $_SERVER['REMOTE_ADDR'];
$sku = "$stamp-$ip";
$sku = str_replace(".", "", "$sku");
$sku = str_replace("-", "", "$sku");
$sku = str_replace(":", "", "$sku");
$sku = substr($sku, 0,10);
}
?>