$stringim = "[ayrac1]elma[/ayrac1][ayrac2]armut[/ayrac2][ayrac1]muz[/ayrac1][ayrac2]kiraz[/ayrac2]";

$string_arr = ikiStringArasiniAl($stringim,"[ayrac1]","[/ayrac1]");
foreach($string_arr as $string_val)
{
    echo $string_val." ";
}


function ikiStringArasiniAl($myStr, $startStr, $endStr)
{
    $myArr = explode($endStr,$myStr);

    foreach($myArr as $myVal)
    {
        $myVal = $myVal."[endOfString]";
        $returnArr[] = BetweenStr($myVal,$startStr,'[endOfString]');
    }

    return  $returnArr;
}

function BetweenStr($InputString, $StartStr, $EndStr=0, $StartLoc=0) {
    if (($StartLoc = strpos($InputString, $StartStr, $StartLoc)) === false) { return; }
    $StartLoc += strlen($StartStr);
    if (!$EndStr) { $EndStr = $StartStr; }
    if (!$EndLoc = strpos($InputString, $EndStr, $StartLoc)) { return; }
    return substr($InputString, $StartLoc, ($EndLoc-$StartLoc));
}