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birthday arrays and pulldowns with error handling

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it's an excerpt of a registration form with 3 pulldowns for birthday ( day, month, year )
check for empty vars and applying CSS classes to show error on "empty" fields.
there are probably better ways, but this works for me. any suggestions welcome.

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  1. ############ PHP PART 
  2.  
  3.  
  4. ## build up 3 arrays with D M Y values for smarty
  5.  
  6. ##days
  7.  
  8. $bday_d[0]["name"] = ".."; 
  9. $bday_d[0]["value"] = "";
  10.  
  11. for ($d=1;$d<=31;$d++) {
  12. 	$bday_d[$d]["name"] = $d; 
  13. 	$bday_d[$d]["value"] = $d;
  14. }
  15.  
  16. ##months
  17. $bday_m[0]["name"] = ".."; 			$bday_m[0]["value"] = "";
  18. $bday_m[1]["name"] = "Januar"; 		$bday_m[1]["value"] = "01";
  19. $bday_m[2]["name"] = "Februar"; 	$bday_m[2]["value"] = "02";
  20. $bday_m[3]["name"] = "März"; 		$bday_m[3]["value"] = "03";
  21. $bday_m[4]["name"] = "April"; 		$bday_m[4]["value"] = "04";
  22. $bday_m[5]["name"] = "Mai"; 		$bday_m[5]["value"] = "05";
  23. $bday_m[6]["name"] = "Juni"; 		$bday_m[6]["value"] = "06";
  24. $bday_m[7]["name"] = "Juli"; 		$bday_m[7]["value"] = "07";
  25. $bday_m[8]["name"] = "August"; 		$bday_m[8]["value"] = "08";
  26. $bday_m[9]["name"] = "September";	$bday_m[9]["value"] = "09";
  27. $bday_m[10]["name"] = "Oktober"; 	$bday_m[10]["value"] = "10";
  28. $bday_m[11]["name"] = "November"; 	$bday_m[11]["value"] = "11";
  29. $bday_m[12]["name"] = "Dezember"; 	$bday_m[12]["value"] = "12";
  30.  
  31. ##years
  32.  
  33. $maxAge = "70";
  34. $minAge = "14";
  35. $thisYear = strftime("%Y",time()) - $minAge; 
  36. $thatYear = $thisYear - $maxAge; 
  37.  
  38. $bday_y[0]["name"] = ".."; 
  39. $bday_y[0]["value"] = "";
  40. $c=1;
  41. for ($y=$thisYear;$y>=$thatYear;$y--) {
  42. 	$bday_y[$c]["name"] = $y; 
  43. 	$bday_y[$c]["value"] = $y;
  44. 	$c++;
  45. }
  46.  
  47. $smarty->assign("bday_d", $bday_d ); 
  48. $smarty->assign("bday_m", $bday_m ); 
  49. $smarty->assign("bday_y", $bday_y ); 
  50.  
  51. ############ ERROR CHECKS
  52.  
  53. $pg = $_POST["reg"];
  54. if ($pg["birthday_day"] == "") 	{ $errorcnt ++; $smarty->assign("error_birthday_day", 1); }
  55. if ($pg["birthday_month"] == "") { $errorcnt ++; $smarty->assign("error_birthday_month", 1); }
  56. if ($pg["birthday_year"] == "") { $errorcnt ++; $smarty->assign("error_birthday_year", 1); }
  57.  
  58.  
  59. ############ SMARTY CODE
  60.  
  61.  
  62. <select name="reg[birthday_day]"  {if $error_birthday_day == 1}class="fielderror"{/if}>
  63. {section name=days loop=$bday_d}
  64. 	 <option label="{$bday_d[days].name}" value="{$bday_d[days].value}" {if $post.birthday_day == $bday_d[days].value}SELECTED{/if}>{$bday_d[days].name}</option>
  65. {/section}
  66. </select>
  67.  
  68. <select name="reg[birthday_month]"  {if $error_birthday_month == 1}class="fielderror"{/if}>
  69. {section name=months loop=$bday_m}
  70. 	 <option label="{$bday_m[months].name}" value="{$bday_m[months].value}" {if $post.birthday_month == $bday_m[months].value}SELECTED{/if}>{$bday_m[months].name}</option>
  71. {/section}
  72. </select>
  73.  
  74. <select name="reg[birthday_year]"  {if $error_birthday_year == 1}class="fielderror"{/if}>
  75. {section name=years loop=$bday_y}
  76. 	 <option label="{$bday_y[years].name}" value="{$bday_y[years].value}" {if $post.birthday_year == $bday_y[years].value}SELECTED{/if}>{$bday_y[years].name}</option>
  77. {/section}
  78. </select>

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