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  1. <?php
  2.  
  3. $input = array (
  4. 0 => 'Jack,140101d,10',
  5. 1 => 'Jack,140101a,15',
  6. 2 => 'Jack,140101n,20',
  7. 3 => 'Jane,141212d,20',
  8. 4 => 'Jane,141212a,25',
  9. 5 => 'Jane,141212n,30',
  10.       );
  11.  
  12. $result = array();
  13.  
  14. foreach ($input as $key => $value) {
  15. 	$valueParts = explode(',',$value);
  16. 	$namePart 	= $valueParts[0];
  17. 	$idPart 	= substr($valueParts[1],0,-1);
  18. 	$charPart 	= substr($valueParts[1],-1);
  19. 	$nrPart 	= $valueParts[2];
  20. 	if(!array_key_exists($namePart, $result)) {
  21. 		$result[$namePart] = array();
  22. 	}
  23. 	if(!array_key_exists($idPart, $result[$namePart])) {
  24. 		$result[$namePart][$idPart] = array();
  25. 	}
  26. 	if(!array_key_exists($charPart, $result[$namePart][$idPart])) {
  27. 		$result[$namePart][$idPart][$charPart] = $nrPart;
  28. 	}
  29. }
  30.  
  31. var_dump($result);
  32.  
Success #stdin #stdout 0.01s 20568KB
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Standard input is empty
stdout
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array(2) {
  ["Jack"]=>
  array(1) {
    [140101]=>
    array(3) {
      ["d"]=>
      string(2) "10"
      ["a"]=>
      string(2) "15"
      ["n"]=>
      string(2) "20"
    }
  }
  ["Jane"]=>
  array(1) {
    [141212]=>
    array(3) {
      ["d"]=>
      string(2) "20"
      ["a"]=>
      string(2) "25"
      ["n"]=>
      string(2) "30"
    }
  }
}
https://ideone.com/mIVL07
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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