php 下拉框输出1到20 echo

补充：<?php
 include('conn.php');
 $pagesize = 10;
 $yeshu=1;
$url = $_SERVER["REQUEST_URI"];
$url = parse_url($url);
$url = $url['path'];
$sqlgetCount = "select * from mmq_news";
$numq = mysql_query($sqlgetCount);
$num = mysql_num_rows($numq);
if($_GET[page]){
	$pagevalue = $_GET[page];
	$page = ($pagevalue-1)*$pagesize;
	$page .=',';
	$yeshu = $pagevalue+1;
}
for($i=1;$i<=$num;$i++){
	$i = $i++;
	return $i;
}
 $sqlall = "select * from mmq_news limit $page $pagesize";
 $query = mysql_query($sqlall);
 while($row = mysql_fetch_array($query)){
 	echo $row['title']."\t|\t".$row['insert_time']."<br>";
 	echo "-------------------------------------------------------------------------<br>";
 }
 echo "共 $num 条"."<a href=$url?page=".($pagevalue-1).">上一页</a>  <a href=$url?page=".($pagevalue+1).">下一页</a>"."第 $yeshu 页 ";
 echo '<select>';
 for($i=1;$i<=$num;$i++){
	$i = $i++;
	echo $str = "<option>$i</option>";
 }
 echo '</select>';
?>
显示不了，帮我看下

答案：for($i=1;$i<=$num;$i++){
	$i = $i++;
	echo $str = "<option>$i</option>";
 }
改成
 for($i=1;$i<=$num;$i++){
	echo "<option>$i</option>";
 }

其他：<select>
<?php
for ($i = 1; $i <= 20; ++$i) {
?>
<option value="<?php echo $i; ?>"><?php echo $i; ?></option>
<?php
}
?>
</select> 

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