Loop through array of values and sort - php

Question

I would like you to help me with an algorithm in PHP that can loop through an array of values, sort them and print non-duplicates.
Here is the code I wrote. I want to do it with only loop and if else statement. I would appreciate any help in achieving this. Thanks
$input_array = [3, 5, 7, 7, 8, 3, 1, 9, 9, 9, 0, 2, 4, 8, 0, 12, 5, 8, 2];`
$count_array = count($input_array); // count the array`enter code here`
for($i = 0; $i < $count_array; $i++){ //loop through the array 1st time
$check_array = false;
//sort array
for($j = $i+1; $j < $count_array; $j++){
if($input_array[$i] > $input_array[$j]){
$non_duplicates = $input_array[$i];
$input_array[$i] = $input_array[$j];
$input_array[$j] = $non_duplicates;
}
else if($input_array[$i] == $input_array[$j] &&( $i != $j)){
$check_array = true;
break;
}
else{
$input_array[$i] != $input_array[$j];
}
}
if(!$check_array){
echo($input_array[$i]. ', ');
}
}

Answer 1

You can do it with 2 for cycles where the first cycle is for the first element and the 2nd cycle is always in the next position, this will help to always check if the first number is less than the second. You create a temporary variable where you store the value of the first number and you pass the value of the second number to the variable of the first one, later the temporary one that you had stored you pass it to the variable of the second number (with this you got to invert the values of one to the other).
As this is ordering them, later an if is made where it is verified if they are equal, in case of being equal a unset() is made to eliminate that data of the array.
// Array of values
$input_array = [3, 5, 7, 7, 8, 3, 1, 9, 9, 9, 0, 2, 4, 8, 0, 12, 5, 8, 2];
// count the length of array
$count = count($input_array);
// order array and remove duplicates
for ($i = 0; $i < $count; $i++) {
for ($j = $i + 1; $j < $count; $j++) {
// order array
if ($input_array[$i] < $input_array[$j]) {
$temp = $input_array[$i];
$input_array[$i] = $input_array[$j];
$input_array[$j] = $temp;
}
// delete duplicates
if ($input_array[$i] == $input_array[$j]) {
unset($input_array[$j]);
}
}
}
// Return an array with elements in reverse order
$input_array = array_reverse($input_array);
You get something like this:
Dump => array(9) {
[0] => int(1)
[1] => int(2)
[2] => int(3)
[3] => int(4)
[4] => int(7)
[5] => int(5)
[6] => int(8)
[7] => int(9)
[8] => int(12)
}