php date formatting api

can you help with a date formating api. The input is a date like 20/05/2022, dd/mm/yyyy and output would be like this { "valid ": true, "string_date": "05/20/2023", "string_date_time": "2023-05-20 00:00:00" } But my code is not picking up dates like 20/5/2023 and 7/5/2023 Here is the code i have public function validatedateapi(){ $postdate = $_POST['date']; $output_array_dates1 = $this->find_date(strtolower($postdate)); $checkdateis = ""; if(count($output_array_dates1)>1) { $checkdateis = $output_array_dates1['day']."-".$output_array_dates1['month']."-".$output_array_dates1['year']; } if(validateDate($checkdateis)){ $checkdateis = $checkdateis; } if(!empty($checkdateis)){ echo json_encode(array("valid "=>true,"string_date"=>date("m/d/Y",strtotime($checkdateis)),"string_date_time"=>date("Y-m-d H:i:s",strtotime($checkdateis)))) ; }else{ preg_match( '/([0-9]?[0-9])[\.\-\/ ]+([0-1]?[0-9])[\.\-\/ ]+([0-9]{2,2})/', $postdate, $matches ); if(validateDate($matches[0],"d-m-y") && isset($matches[0])){ $d = DateTime::createFromFormat("d-m-y", $matches[0]); echo json_encode(array("valid "=>true,"string_date"=>$d->format("m/d/Y"),"string_date_time"=>$d->format("m/d/Y H:i:s"))) ; }else if(validateDate($matches[0],"d/m/y") && isset($matches[0]) ){ $d = DateTime::createFromFormat("d/m/y", $matches[0]); echo json_encode(array("valid "=>true,"string_date"=>$d->format("m/d/Y"),"string_date_time"=>$d->format("m/d/Y H:i:s"))) ; } else{ echo json_encode(array("valid "=>false)) ; } } } Whats the cheapest you can do this for please?