Date Select Object

<?php
// The functions contained in this script generate and process a php format date select object
// Author: Ulysses J Ludwig
// E-mail: ujludwig@yahoo.com
// Phone: 213.948.8278

function Fn_date_select($In_field_name, $In_date_format_string, $In_unix_time)
{ // This function generates a date and or time function based on the format and default time that you enter
	if (!$In_unix_time)
	{
		$In_unix_time = time();
	}

	for ($j=0;$j<strlen($In_date_format_string);$j++)
	{ // looping through the format string
		$L_format_char = substr($In_date_format_string,$j,1);
		switch ($L_format_char)
		{ // each character in the format string means something
			case "m": // numeric month
				?>
				<select name=<?php echo $In_field_name . "[m]"?>>
				<?php
					for ($i=1;$i<13;$i++)
					{
						$L_var_month = date("$L_format_char",mktime(0,0,0,$i,15,2000));
						if ($L_var_month == date("$L_format_char",$In_unix_time))
						{
							$L_selected=" SELECTED ";
						}
						else
						{
							unset($L_selected);
						}
						print ("<option value=$i $L_selected>"  . $L_var_month . "</option>\n");
					}			
				?>
				</select>
				<?php
				break;
				
			case "F": // textual full month
				?>
				<select name=<?php echo $In_field_name . "[m]"?>>
				<?php
					for ($i=1;$i<13;$i++)
					{
						$L_var_month = date("$L_format_char",mktime(0,0,0,$i,15,2000));
						if ($L_var_month == date("$L_format_char",$In_unix_time))
						{
							$L_selected=" SELECTED ";
						}
						else
						{
							unset($L_selected);
						}
						print ("<option value=$i $L_selected>"  . $L_var_month . "</option>\n");
					}			
				?>
				</select>
				<?php
				break;
				
			case "d":		
				?>
				<select name=<?php echo $In_field_name . "[d]"?>>
				<?php for ($i=1;$i<32;$i++)
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}	
				?>	
				</select>
				<?php
				break;
				
			case "D":		
				?>
				<select name=<?php echo $In_field_name . "[d]"?>>
				<?php for ($i=1;$i<8;$i++)
				{
					$L_var_textual_day = date("$L_format_char",mktime(0,0,0,8,$i,1999));
					if ($L_var_textual_day == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$L_var_textual_day</option>\n");
				}	
				?>	
				</select>
				<?php
				break;
				
			case "y":
				?>
				<select name=<?php echo $In_field_name . "[y]"?>>
				<?php for ($i = 1996; $i <= (date($L_format_char) + 8); $i++) // starting in 1997
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
			case "Y":
				?>
				<select name=<?php echo $In_field_name . "[y]"?>>
				<?php for ($i = 1996; $i <= (date($L_format_char) + 7); $i++) // starting in 1997
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
			case "h":
				?>
				<select name=<?php echo $In_field_name . "[h]"?>>
				<?php for ($i = 1; $i < 13; $i++)
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
			case "g":
				?>
				<select name=<?php echo $In_field_name . "[h]"?>>
				<?php for ($i = 1; $i < 13; $i++)
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
				
			case "H":
				?>
				<select name=<?php echo $In_field_name . "[h]"?>>
				<?php for ($i = 0; $i < 24; $i++)
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
			case "G":
				?>
				<select name=<?php echo $In_field_name . "[h]"?>>
				<?php for ($i = 0; $i < 24; $i++)
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
			case "i":
				?>
				<select name=<?php echo $In_field_name . "[i]"?>>
				<?php for ($i = 0; $i < 60; $i++)
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
			case "s":
				?>
				<select name=<?php echo $In_field_name . "[s]"?>>
				<?php for ($i = 0; $i < 60; $i++)
				{
					if ($i == date("$L_format_char",$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=$i $L_selected>$i</option>\n");
				}
				?>
				</select>	
				<?php
				break;
				
			case "a":
				?>
				<select name=<?php echo $In_field_name . "[a]"?>>
				<?php 
					// AM
					$L_text_time = "am";
					if ($L_text_time == date(strtoupper($L_format_char),$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=1 $L_selected>$L_text_time</option>\n");
					
					// PM
					$L_text_time = "pm";
					if ($L_text_time == date(strtoupper($L_format_char),$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=2 $L_selected>$L_text_time</option>\n");
				?>
				</select>	
				<?php
				break;
				
			case "A":
				?>
				<select name=<?php echo $In_field_name . "[a]"?>>
				<?php 
					// AM

					$L_text_time = "AM";
					if ($L_text_time == date(strtoupper($L_format_char),$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=1 $L_selected>$L_text_time</option>\n");
					
					// PM
					$L_text_time = "PM";
					if ($L_text_time == date(strtoupper($L_format_char),$In_unix_time))
					{
						$L_selected=" SELECTED ";
					}
					else
					{
						unset($L_selected);
					}
					print("<option value=2 $L_selected>$L_text_time</option>\n");
				?>
				</select>	
				<?php
				break;
			default:
				echo $L_format_char; // not a recognized character, so echo it out
		} // end of switch
	} // end of for
}

function Fn_process_date_select($In_time_array)
{
// This function processes the date select object on submit
	if ($In_time_array[a]==2 and ($In_time_array[h] < 12))
	{ // the user chose pm
		$In_time_array[h] = $In_time_array[h] + 12;
	}
	else
	if ($In_time_array[a] == 1 and $In_time_array[h] == 12)
	{
		$In_time_array[h] = 0;
	}
	return mktime($In_time_array[h],$In_time_array[i],$In_time_array[s],$In_time_array[m],$In_time_array[d],$In_time_array[y]);
}

?>

<html>
<?php
// To process the user entry back to php-unix time do this
if ($_GET['submit_pb'])
{
      $L_php_unix_time = Fn_process_date_select($_GET['MyDateField']);
	  echo "The time the user entered was: " . date("F d Y, h:i:s A", $L_php_unix_time);
}
?>
   <form name=myform>
      <?php Fn_date_select("MyDateField","F d Y, h:i:s A",$Null); /* M */ ?>
      <input name="submit_pb" type="submit" value="Submit">
   </form>
</html>


</body>
</html>

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