$z[] = "z";
$z[] = "zz";
echo "z[0] = " . $z[0] . "\n";
echo "z[1] = " . $z[1] . "\n";
echo "count(z) = " . count($z) . "\n\n";

$x[] = "x";
$x[] = "xx";
echo "x[0] = " . $x[0] . "\n";
echo "x[1] = " . $x[1] . "\n";
echo "count(x) = " . count($x) . "\n\n";

$z[] = $x;
echo "x[0] = " . $x[0] . "\n";
echo "x[1] = " . $x[1] . "\n";
echo "z[0] = " . $z[0] . "\n";
echo "z[1] = " . $z[1] . "\n";
echo "z[2] = " . $z[2] . "\n";
echo "z[3] = " . $z[3] . "\n";
echo "count(z) = " . count($z) . "\n\n";

/* result: non-indexed arrays with PHP Version 3.0b5 on Windows95/NT Version (binaries)
z[0] = z
z[1] = zz
count(z) = 2

x[0] = x
x[1] = xx
count(x) = 2

x[0] = x
x[1] = xx
z[0] = z
z[1] = zz
z[2] = 
z[3] = 
count(z) = 3
*/