Array subtraction in mysli_fetch_assoc - php

Question

I have some sorting problem to this i want it to compare properly but the array result is incrementing
$query=mysqli_query($conn,"SELECT * FROM questions WHERE MATCH (question) AGAINST ('$msg*' IN BOOLEAN MODE) limit $limit ");
}
while($row = mysqli_fetch_assoc($query)){
$id = $row ["id"];
$question = $row ["question"];
$answer = $row ["answer"];
$words2 = explode(" ", cleanWords($question));
foreach($words2 as $word)
{
$stem = PorterStemmer::Stem($word);
if(!in_array($stem, $stop_words)) {
$stem_words[] = $stem;
}
}
print_r($stem_words);
echo "<br>";
}
}
Now my result set is incrementing like
Array ( [0] => What [1] => IT [2] => STAFF [3] => )
Array ( [0] => What [1] => IT [2] => STAFF [3] => [4] => what [5] => it [6] => )
Array ( [0] => What [1] => CEIT [2] => UCC [3] => [4] => what [5] => it [6] => [7] => Where [8] => it [9] => )
**I want to get the result like this
Array ( [0] => What [1] => IT [2] => STAFF [3] => )
Array ( [0] => what [1] => it [2] => )
Array ( [0] => Where [1] => it [2] => )

Answer 1

The problem is that you are just adding each word to the $stem_words array. Instead for each record, build a list of words for this record ($newList in this code) and add this record to the $stem_words array...
$newList = [];
foreach($words2 as $word)
{
$stem = PorterStemmer::Stem($word);
if(!in_array($stem, $stop_words)) {
$newList[] = $stem;
}
}
$stem_words[] = $newList;