$runningnumber=1;
$comp = "CT";
echo $result = $comp.date('mdy').str_pad($runningnumber++, 5, "0",
STR_PAD_LEFT);
如何增加$ runnungnumber，如00001,00002,00003,00004,00005,00006 ....请帮助
我想要的输出是
CT08221700001
CT08221700002
CT08221700003
CT08221700004
CT08221700005