i have little trouble with operators in this code. I need to at least one of the 'and' pair to be true to continue. In the example it should say true but it doesn't. Any help would be appreciated.

```
$i = 1;
$e = 5;
$c = 3;
$d = 4;
$b = 6;
$a = 7;

if ( (i==1 && e==4) || (a==7 && b==5) || (c==3 && d==4) ){
echo 'true';
}else{
echo 'false';
}

```