Slide 5
Slide 5 text
// breakstring breaks a string into all substrings with a length
// greater than min, returning ...
private function breakString($str, $min){
$res = [];
$len = strlen($str);
for ($i = $min; $i <= $len; $i++){
for ($j = 0; $j<($len-$min); $j++){
$part = strtoupper(substr($str, $j, $i));
if (strlen($part) >= $i){
$res[$part] = 0;
}
}
}
return array_keys($res);
}