怎么转换char到int
function myid($datetime){
$array1 = explode(" ",$datetime);
$array2 = explode("-",$array1[0]);
$array3 = explode(":",$array1[1]);
$array2[3] = $array3[0];
$array2[4] = $array3[1];
$array2[5] = $array3[2];
$array2 = implode("",$array2);
return $array2;
}
怎么把$array2变成INT型?