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  1. <?php
  2. Class Thesaurus {
  3. 	private  $datas= array();
  4. 	public function add($word, $synonyms) 
  5. 	{
  6. 		$data = [];
  7. 			if (array_key_exists($word,$this->datas))
  8. 			{
  9. 				//for($i=0;$i<count($synonyms);$i++){
  10. 				foreach ($synonyms as $synonym) {
  11. 				$this->datas[$word][]=$synonym;
  12. 				}
  13. 			}
  14. 			else
  15. 			{
  16. 				$this->datas[$word]=$synonyms;
  17. 			}
  18. 		return $this->datas;
  19. 	}
  20. 	public function getSynonyms($word){
  21. 		$result = array();
  22. 		if (array_key_exists($word, $this->datas)) {
  23. 		    //if key = word
  24. 			foreach ($this->datas[$word] as $data) {
  25. 					$i = count($result);
  26. 					$result[$i] = $data;
  27. 				}
  28. 			}
  29. 			//key as synonym
  30. 			foreach ($this->datas as $key => $value) {
  31. 				$array_key = $this->datas[$key];
  32. 				if (array_search($word, $array_key) !== false) {
  33. 						$result[] = $key;
  34. 				}
  35. 		}
  36. 		if ($result == null) {
  37. 			return null;
  38. 		}
  39. 		return $result;
  40. 	}
  41. }
  42. $thesaurus  = new Thesaurus;
  43. $thesaurus->add('big', ['large', 'great']);
  44. $thesaurus->add('big', ['huge', 'fat']);
  45. $thesaurus->add('huge', ['enormous', 'gigantic']);
  46.  
  47. // returns ['large', 'great', 'huge', 'fat']
  48. var_dump($thesaurus->getSynonyms('big'));
  49.  
  50. // returns ['big', 'enormous', 'gigantic']
  51. var_dump($thesaurus->getSynonyms('huge'));
  52.  
  53. // returns ['huge']
  54. var_dump($thesaurus->getSynonyms('gigantic'));
  55.  
  56. // returns null
  57. var_dump($thesaurus->getSynonyms('colossal'));
  58.  
  59.  
Success #stdin #stdout 0.02s 24372KB
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array(4) {
  [0]=>
  string(5) "large"
  [1]=>
  string(5) "great"
  [2]=>
  string(4) "huge"
  [3]=>
  string(3) "fat"
}
array(3) {
  [0]=>
  string(8) "enormous"
  [1]=>
  string(8) "gigantic"
  [2]=>
  string(3) "big"
}
array(1) {
  [0]=>
  string(4) "huge"
}
NULL
https://ideone.com/4qO7xx
language:
PHP (php 7.3.5)
created:
3 years ago
visibility:
public

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