How can I split multiple joined words in PHP - php

Question

Example string: "outofthebox"
I want to get output like this: Array ( [0] => out [1] => of [2] => the [3] => box )
What do I get right now: Array ( [0] => out [1] => oft [2] => heb [3] => ox )
I don't know how it's possible. I need that logic, how can I get more meaningful results.
I'm building it on PHP based on this https://stackoverflow.com/a/481773/17035224 Python answer. But I'm not good at Python. In this python script it's returning results like exactly what I want. Another script in python called 'wordninja' is working great too.
My PHP script:
<?php
$db = new PDO("mysql:host=localhost;dbname=strings", "root", "");
$text = "outofthebox";
$finish = false;
$words = [];
$find = false;
$start = -1;
$added = false;
$comp = [];
for($i = 0; $i<strlen($text); $i++) {
if(count($words) > 0) {
$last = max($words);
$comp[] = $last;
$words = [];
$start = strlen(implode("", $comp));
if($added === true) {
$added = false;
}else {
$start++;
}
}else {
$start++;
}
$part = "";
for($j = $start; $j<strlen($text); $j++) {
$part .= $text[$j];
echo $part."<br>";
$check = checkWord($part);
if($check === true) {
$added = true;
$words[] = $part;
}
}
}
print_r($comp);
function checkWord($text) {
global $db;
$check = $db->query("select * from strings where string='".$text."'")->fetch(PDO::FETCH_ASSOC);
if(isset($check["id"]) == true) {
return true;
}
return false;
}
Other difference is as you see I'm using mysql database for dictionary instead of txt.

Answer 1

If you change the checkWord function to this :
function checkWord($text) {
$arr = [
'out',
'of',
'the',
'box',
];
if(in_array($text, $arr)) {
return true;
}
return false;
}
You will see that the result will be :
Array ( [0] => out [1] => of [2] => the [3] => box )
So my guess is that you have false-positives coming from your query, check that and you'll solve the problem.