How to determine if value is a date in PHP

Question

I am working with arrays of values in PHP. Some of these values may include a date in various string formats.

I need to convert dates in multiple formats to their numeri

Answer 1

The problem with Pekka's script is that the date '2011-30-30' is also considered valid. This is the modified version.

$formats = array("d.m.Y", "d/m/Y", "Ymd"); // and so on.....
$dates = array(1,2,3,"4","11/12/2009","22/12/2000",true,false);

foreach ($dates as $input) 
 { 
   foreach ($formats as $format)
    {
      echo "Applying format $format on date $input...
";

      $date = DateTime::createFromFormat($format, $input);
      if ($date == false || !(date_format($date,$format) == $input) ) 
       echo "Failed
";
      else
       echo "Success
";
    }
 }