PHP：许多阵列合而为一

I am doing a small calculator, that has randomly selected sequence of 3 chars (-, / and \).

How can I combine my three arrays into one? I'm using array_merge, but it creates an array that nests 3 arrays in it. How can I make this array one-dimensional?

My code (feedback welcome):

$_SESSION["sekvenssi"] = 15; //sekvenssi means "sequence" in Finnish.

$maara1 = rand(1, $sekvenssi/2);  //Maara means "amount"
$maara2 = rand(1, $sekvenssi/2);

$kenot = array_fill(0, $maara1, "/");
$vastakenot = array_fill(count($kenot), $maara2, "\\");
$tayte = array_fill(
    count($kenot)+count($vastakenot),
    $_SESSION["sekvenssi"]-$maara1-$maara2,
    "-"
);

$kaava = array_merge(array($tayte), array($kenot), array($vastakenot));
shuffle($kaava);

print "<p style='font-family: Courier;font-size: 18px;'>";
    foreach ($kaava as $komponentit) {
    print $komponentit;
}
print "</p>";

So this outputs "ArrayArrayArray", but I want it to produce one array with only one level (now it has 2 levels and thus cannot be printed).

You have already created the array's when you use array_fill, so when you merge them, you are then creating another set of arrays with each array.

Try changing this:

$kaava = array_merge(array($tayte), array($kenot), array($vastakenot));

to

$kaava = array_merge($tayte, $kenot, $vastakenot);

change

$kaava = array_merge(array($tayte), array($kenot), array($vastakenot));

to

$kaava = array_merge($tayte, $kenot, $vastakenot);

you can use print_r() or var_dump() to test-output variables in php. it will even correctly display arrays and objects.