10c05-3.php

来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 42 行

<?php
// Create a function that will return an option list of months:
function month_options() {
	$retval = '';
	
	// For all twelve months:
	foreach(range(1,12) as $mon) {
		// Make a timestamp for this month:
		$time = mktime(0, 0, 0, $mon);
		// Use date to return the month name as text:
		$name = date('F', $time);
		// Create the select option:
		$retval .= "<option value=\"{$mon}\">{$name}</option>\n";
	}
	
	return $retval;
}

// Create a function, that will output a list of years
// The first parameter is how many years in the past to start from
// The second parameter is how many years into the future to go:
function year_options($before, $after) {
	$retval = '';
	
	// From the current year:
	$cyear = date('Y');

	// Loop over the range requested:
	foreach(range($cyear - $before, $cyear + $after) as $y) {
		// Store the select option:
		$retval .= "<option value=\"{$y}\">{$y}</option>\n";
	}
	
	return $retval;
}

// Now we can just output a simple form using these:
?>
<form>
<p>Month:<select name="month"><?= month_options() ?></select></p>
<p>Year:<select name="year"><?= year_options(5, 10) ?></select></p>
</form>