How to pass value to variable without calling recursive loop function?

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function test_loop($x_values,$x, $y)
{
    $x = $x + 1;
    if($x < 4)
    {
        //add new $x value to variable $x_values
        $x_values = test_loop($x_values . $x . "##", $x, $y);
    }

    //loop again if y is not = 3;
    $y = $y + 1;
    if($y < 3)
    {
        echo "kkk" . $y . "<br/>";
        $x_values = test_loop($x_values . $x . "##", $x, $y);
    }else{
        echo "---------------------<br/>";
    }

    return $x_values;
}

function abc(){
    $bababa = test_loop(0,1,0);

    echo $bababa;
}

abc();

Output :

kkk1
kkk2
---------------------
kkk1
kkk2
---------------------
kkk1
kkk2
---------------------
kkk2
---------------------
02##3##4##5##3##4##2##3##4##3##

How to make the output become :

kkk1
kkk2
---------------------
02##3##

What I have tried:

Regarding the comment tag

//add new $x value to variable $x_values

I want to add value of $x into variable $x_values by this code :

$x_values = $x_values . $x;

but it is not working, so I force to use

$x_values = test_loop($x_values . $x . "##", $x, $y);

end up it keep calling test_loop(). How to add in value of $x into variable $x_values without calling the test_loop() function?

Posted 29-Apr-20 14:23pm

Zac Ang

Updated 29-Apr-20 15:12pm

v3

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Zac Ang · Accepted Answer · 2020-04-29T15:13:00

Ok solution is using array instead of variable :

function test_loop($x_values,$x, $y)
{
    $x = $x + 1;
    if($x < 4)
    {
        $x_values[] = $x;
    }

//loop again if y is not = 3;
$y = $y + 1;
if($y < 3)
{
    echo "kkk" . $y . "<br/>";
    $x_values[] = $x;
}else{
    echo "---------------------<br/>";
}

return implode($x_values); 
}


function abc(){
    $bababa = test_loop([0],1,0);

    echo $bababa;
}