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  1. <?php
  2.  
  3. $cadena="11d08mo2016y";
  4. $array = preg_split('/[^0-9]/i', $cadena);
  5.  
  6. $array_sin_espacios = array_filter($array, function($dato){
  7. if($dato == ''){
  8. return false;
  9. }else{
  10. return true;
  11. }
  12. });
  13.  
  14. var_dump($array_sin_espacios);
Success #stdin #stdout 0s 82944KB
stdin
Standard input is empty
stdout
array(3) {
  [0]=>
  string(2) "11"
  [1]=>
  string(2) "08"
  [3]=>
  string(4) "2016"
}