$array_A = array ( a1, a2, a3, a4, a5, a6, a7 );

$array_B = array (b1, b2, b3, b4, b5 );

$array_C = array (c1, c2, c3 );

Is there any class or code which allows me to have series of 3 values each from $array_A, $array_B and $array_C?

$serie_1 = array (a1, b1, c1);
$serie_2 = array (a2, b2, c2);
$serie_3 = array (a3, b3, c3);
$serie_4 = array (a4, b4, a5);
$serie_5 = array (a6, a7);

(in this example $array_A has 7 values but it may be random, same scenario with $array_B and $array_C)