Hi , any ideas when I add a new record I need my primary key ( Varchar type) to add an
automatic 26 length letters and letters randomly selected plus date/time in that way that it will be almost impossible to re created
i.e. 2wd3hr5j6k2l3mbr8osqlc9mdf250420121403
Please help
I DID THAT BUT CANNOT make it as above
for($i=0; $i<7; $i++){
$random_string .= chr(rand(0,25)+65);
}
echo $random_string;