Explode string on second last and last space to create exactly 3 elements

Question

I want to split a space-delimited string by its spaces, but I need the total elements in the result array to be exactly 3 AND if the string has more than two spaces, only the last two spaces should be used as delimiters.

My input strings follow a predictable format. The strings are one or more words, then a word, then a parenthetically wrapped word (word in this context is a substring with no whitespaces in it).

Sample strings:

1. Stack Over Flow Abcpqr (UR)
   becomes:
   ["Stack Over Flow", "Abcpqr", "(UR)"]
2. Fluency in English Conversation Defklmno (1WIR)
   becomes:
   ["Fluency in English Conversation","Defklmno","(1WIR)"]
3. English Proficiency GHI (2WIR)
   becomes:
   ["English Proficiency","GHI","(2WIR)"]
4. Testing ADG (3WIR)
   becomes:
   ["Testing","ADG","(3WIR)"]

I used the following code, but it is only good for Testing (3WIR).

$Original = $row['fld_example'];                                    
$OriginalExplode = explode(' ', $Original);

<input name="example0" id="example0" value="<?php echo $OriginalExplode[0]; ?>" type="text" autocomplete="off" required>

<input name="example1" id="example1" value="<?php echo $OriginalExplode[1]; ?>" type="text" autocomplete="off" required>

Basically, I just need to explode the string on spaces, starting from the end of the string, and limiting the total explosions to 2 (to make 3 elements.

Answer 1

You can approach this using explode and str_replace

$string = "Testing (3WIR)";
$stringToArray = explode(":",str_replace("(",":(",$string));
echo '<pre>';
print_r($stringToArray);

Edited question answer:-

$subject = "Fluency in English Conversation Defklmno (1WIR)";
$toArray = explode(' ',$subject);
if(count($toArray) > 2){
  $first       = implode(" ",array_slice($toArray, 0,count($toArray)-2));
  $second      = $toArray[count($toArray)-2];
  $third       = $toArray[count($toArray)-1];
  $result      = array_values(array_filter([$first, $second, $third]));
}else{
  $result = array_values(array_filter(explode(":",str_replace("(",":(",$subject))));
}

DEMO HERE