[PHP] strToBrainfuck()

<?php

function strToBrainfuck($string){
    $letters = str_split($string);
    $ascii = null;
    $rozn = 0;
    $braincode = null;
    foreach($letters as $x => $y){
        $ascii[$x] = ord($y);
        $dubs = array_search($y, $letters);
        if($dubs != null) {
            if(isset($ascii[$x]))
                $rozn = $x - $dubs;
        }
        $bf = null;
        $z = $x;
        $b = 10;
        $a = $ascii[$x];
        $c = $a / $b;
        $d = $a % $b;
        $e = $a - $d;
        if($d>0) {
            $f = $e % $b;
            $g = $e / $b;
        }
        else {
            $f = $d;
            $g = $c;
        }
        if($rozn == 0) {
        if($z != 0) {
            for($i=0;$i<$z;$i++){
                $bf.="<";
            }
        }
        for($i=0;$i<$g;$i++){
            $bf .= "+";
        }
        $bf .= "[>";
        if($z != 0) {
            for($i=0;$i<$z;$i++){
                $bf.=">";
            }
        }
        for($i=0;$i<$b;$i++){
            $bf .= "+";
        }
        if($z != 0) {
            for($i=0;$i<$z;$i++){
                $bf.="<";
            }
        }
        $bf .= "<-]>"; // koniec pętli
        if($z != 0) {
            for($i=0;$i<$z;$i++){
                $bf.=">";
            }
        }
        for($i=0;$i<$d;$i++){
            $bf .= "+";

        }
        $bf .= ".";
    }
    else {
        for ($i=1; $i < $rozn; $i++) {
            $bf .= "<";
        }
        $bf .= ".";
        for ($i=1; $i < $rozn; $i++) {
            $bf .= ">";
        }
    }
        $braincode[$x] = $bf;
    }

    $array = array(
            "string" => $string,
            "letters" => $letters,
            "ascii" => $ascii,
            "brainfuck" => $braincode,
            "brainfuck-minify" => implode("", $braincode),
            "divide-by" => $b
        );
    return $array;
}