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  1. <?php
  2.  
  3. $array = [];
  4.  
  5. $array['2015-09-15'] = [
  6. 'SP' => 36,
  7. 'RJ' => 9
  8. ];
  9.  
  10. print_r($array);
Success #stdin #stdout 0.02s 52432KB
stdin
Standard input is empty
stdout
Array
(
    [2015-09-15] => Array
        (
            [SP] => 36
            [RJ] => 9
        )

)