Date Form Demo

The Source

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
	"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<title>DateForm Demo</title>

<h1>Date Form Demo</h1>
<?php
$the_name = @$_POST['the_name'];
$the_date = date_get_value('the_date', $_POST, date('Y-m-d H:i:s'));
?>

<form action="<?=$_SERVER["PHP_SELF"]?>" method="post">
<p>Name: <input type="text" name="the_name" 
	value="<?=htmlspecialchars(stripslashes($the_name))?>" size="20" /></p>
<p>Date: <?=date_view_form($the_date, 'the_date')?></p>
<p><input type="submit" value="Test!" />
</form>

<h2>The Source</h2>
<textarea cols="80" rows="25">
<?=htmlspecialchars(file_get_contents(__FILE__))?>
</textarea>

<?php

function date_view_form($datetime, $name)
{
	$o = array();
	
	@list($date, $time) = explode(" ", $datetime);
	if (FALSE !== strpos($date, ":")) {
		// date is time
		$time = $date;
		$date = "";
	}
	
	if ($date) {
		list($year, $month, $day) = explode("-", $date);
		$dateform[] = '<input id="'.$name.'_year" name="'.
			$name.'_year" type="text" size="4" value="'.
			str_pad($year, "0", 4, STR_PAD_LEFT).'" />';
		$dateform[] = select_month($name . "_month", $month);
		$dateform[] = '<input id="'.$name.'_day" name="'.
			$name.'_day" type="text" size="2" value="'.
			str_pad($day, "0", 2, STR_PAD_LEFT).'" />';
		$o[] = implode("-", $dateform) . "\n";
	}
	
	if ($time) {
		list($hour, $min, $sec) = explode(":", $time);
		$timeform[] = '<input id="'.$name.'_hour" name="'.$name.
			'_hour" type="text" size="2" value="'.
			str_pad($hour, "0", 2, STR_PAD_LEFT).'" />';
		$timeform[] = '<input id="'.$name.'_min" name="'.
			$name.'_min" type="text" size="2" value="'.
			str_pad($min, "0", 2, STR_PAD_LEFT).'" />';
		$timeform[] = '<input id="'.$name.'_sec" name="'.
			$name.'_sec" type="text" size="2" value="'.
			str_pad($sec, "0", 2, STR_PAD_LEFT).'" />';
		$o[] = implode(":", $timeform) . "\n";
	}
	
	return implode("\n", $o);
}

function date_get_value($name, $var, $default=FALSE)
{
	if (FALSE === $default)
		$default = date("Y-m-d");
	
	$fields = explode(",", "year,month,day,hour,min,sec");
	foreach($fields as $field) {
		$key = "{$name}_{$field}";
		$$field = isset($var[$key]) ? intval($var[$key]) : 0;
	}
	
	$stamp = mktime($hour, $min, $sec, $month, $day, $year);
	if ($stamp <= 0) return $default;
	
	if ($hour == 0 && $min == 0 && $sec == 0) return date("Y-m-d", $stamp);
	else return date("Y-m-d H:i:s", $stamp);
}

function select_month($name, $value="")
{
	if ("" == $value) $value = date("m");
	
	$month_names = explode(",", ",Januari,Februari,Maret,April,Mei,Juni,Juli,".
		"Agustus,September,Oktober,November,Desember");
	unset($month_names[0]);
	
	$o = array();
	foreach($month_names as $key=>$text) {
		$s = $value == $key ? ' selected="selected"' : '';
		$o[] = '<option value="'.$key.'"'.$s.'>'.$text.'</option>';
	}
	return '<select name="'.$name.'">' . implode("\n", $o) . '</select>';
}

?>