Why is not my condition giving me the expected result?

I'm performing a line break without using the wordwrap() function.

I'll get a string with the text, and an int with the length of characters allowed by rows as a parameter. I'll have to cut that string, then insert it into an already cut vector. The conditions for cutting are:

I think that probably the error is in the conditions but I can not identify it, some help?

When printing the vector, I get:

  

Array (0) = > 'If I saw more'
  Array (1) = > 'far gone'
  Array (2) = > 'to be'
  Array (3) = > 'standing'
  Array (4) = > 'on'
  Array (5) = > 'shoulders of'
  Array (6) = > 'giants'

However, I need to print:

  

Array (0) = > 'If I saw more'
  Array (1) = > 'far gone'
  Array (2) = > 'to be from'
  Array (3) = > 'foot on'
  Array (4) = > 'shoulders of'
  Array (5) = > 'giants'

Here is the code I developed below:

  class Resolution implements TextWrapInterface {

  public function textWrap(string $text,int $length):array {
//local variables
$words=explode(" ",$text); //separate the text into words
$arr=array();              //array used for return
$string=" ";
$limit=$length; //limit of characters per line
$line=0;//array line

for($i = 0; $i < count($words); $i++){
    $string = $words[$i]." ";
   if((strlen($words[$i])>$length)){
    //cut the world and print the remaining letters on the next line
    $this->cutWord($arr,$words[$i],$limit,$length,$line);  
  }else
   if($limit>=strlen($string)){    
        //add the word in array line
        $arr[$line]=(array_key_exists($line,$arr))? 
    $arr[$line].$string:$string;
        //subtract the limit with the quantity of characters
        $limit-=strlen($string);
    }else 
        if($limit<strlen($string)){

            //line++ for inserting the string on a next index
            $line++;
            $limit=$length;
            //add the word on array line
            $arr[$line]=$string;
            //subtract the limit with the quantity of characters
            $limit-=strlen($string);
        }
   }

    return $arr;
     print_r($arr);

   }

   //and then I've got a cutWord function
  private function cutWord(&$array,$word,&$limit,$length,$index){

 for($i = 0; $i < strlen($word); $i++){ 

//verify if the index doesn't have any words in
 if(($limit!=$length)&&($i==0)){
  $index++; // jump an array line
  $limit=$length; //limit receives starting value
 }
//verify if the limit is > 0
 if($limit<=0) {
$index++;
$limit=$length; //limit receives starting value
 }
//add the letter in the array index concatenating with the previous
$array[$index]=(array_key_exists($index,$array))? 
$array[$index].$word[$i]:$word[$i];
$limit--;
}
    $array[$index]=$array[$index]." ";
}