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  1. <?php
  2. function InvertData($data) {
  3. 	$format = NULL;
  4. 	$frt    = NULL;
  5. 	if (preg_match("/^[0-9]{4}-(0[1-9]|1[0-2])-(0[1-9]|[1-2][0-9]|3[0-1])$/",$data)) {
  6. 		$format = "Y-m-d";	
  7. 		$frt    = "d/m/Y";
  8. 		$dta = explode('-', $data);
  9. 		if (!checkdate($dta[1],$dta[2],$dta[0])){
  10. 			return NULL;
  11. 		}
  12. 	} else if (preg_match("/^(0[1-9]|[1-2][0-9]|3[0-1])\/(0[1-9]|1[0-2])\/[0-9]{4}$/",$data)){
  13. 		$format = "d/m/Y";	
  14. 		$frt    = "Y-m-d";
  15. 		$dta = explode('/', $data);
  16. 		if (!checkdate($dta[1],$dta[0],$dta[2])){
  17. 			return NULL;
  18. 		}
  19. 	}
  20. 	if ($format != NULL && $frt != NULL) {
  21.     	$data = date_create_from_format($format, $data);
  22.     	if ($data != NULL) {
  23.     		return $data->format($frt);
  24.     	}
  25. 	}
  26. 	return NULL;
  27. }
  28.  
  29. $resposta = InvertData("1980-05-05");
  30. if (empty($resposta)) {
  31. 	echo "Data inválida ...";
  32. } else {
  33. 	echo $resposta;
  34. }
  35. echo PHP_EOL;
  36. /**/
  37. $resposta = InvertData("80-5-5");
  38. if (empty($resposta)) {
  39. 	echo "Data inválida ...";
  40. } else {
  41. 	echo $resposta;
  42. }
  43. echo PHP_EOL;
  44. /**/
  45. $resposta = InvertData("31/12/2005");
  46. if (empty($resposta)) {
  47. 	echo "Data inválida ...";
  48. } else {
  49. 	echo $resposta;
  50. }
  51. echo PHP_EOL;
Success #stdin #stdout 0.02s 20568KB
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05/05/1980
Data inválida ...
2005-12-31
https://ideone.com/FO9nQt
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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