PHP循环

Question

这应该是容易的，但我有麻烦......

在PHP我怎么能回声出一个选择下拉框，8个月前默认为当前月份，有选择（即使在去年）。

例如，本月它将默认为6月，并在11月结束。

Answer 1

$months = array(); 
for ($i = 0; $i < 8; $i++) { 
    $timestamp = mktime(0, 0, 0, date('n') - $i, 1); 
    $months[date('n', $timestamp)] = date('F', $timestamp); 
} 

另类的 “定制” 的月份名称：

$months = array(1 => 'Jan.', 2 => 'Feb.', 3 => 'Mar.', 4 => 'Apr.', 5 => 'May', 6 => 'Jun.', 7 => 'Jul.', 8 => 'Aug.', 9 => 'Sep.', 10 => 'Oct.', 11 => 'Nov.', 12 => 'Dec.'); 
$transposed = array_slice($months, date('n'), 12, true) + array_slice($months, 0, date('n'), true); 
$last8 = array_reverse(array_slice($transposed, -8, 12, true), true); 

输出这样个月的下拉数组是简单：

<select name="month"> 
    <?php 
     foreach ($months as $num => $name) { 
      printf('<option value="%u">%s</option>', $num, $name); 
     } 
    ?> 
</select> 

Answer 2

$months = array(
    'January', 
    'February', 
    'March', 
    'April', 
    'May', 
    'June', 
    'July ', 
    'August', 
    'September', 
    'October', 
    'November', 
    'December', 
); 

$current = date('F'); 
$start = array_search($current, $months); 

$toshow = array(); 
$total = 0; 
for($i = $start; $total < 8; $i--) 
{ 
    if($i == 0) 
    { 
     $i = 12; 
    } 

    $toshow[] = $months[$i]; 
    $total++; 
} 

var_dump($toshow); 

把那一个镜头，只需将$ toshow转储到您的HTML。

Answer 3

这绝对是基于deceze的答案只有几个月的向后排序，当月选择

$curr_month = date('F',mktime(0, 0, 0, date('n'))); 
    $months = array(); 

for ($i = 1; $i <= 8; $i++) { 
$months[] = date('F', mktime(0, 0, 0, date('n') - $i, 1)); 
} 
    $months = array_reverse($months, true); 

echo "<select>\n"; 
foreach($months as $key =>$value){ 
     echo "<option value='$value'>$value</option>\n"; 
            } 

echo "<option value='$curr_month' selected='selected'>$curr_month</option> 
    </select>"; 

Answer 4

下面的一些功能......在页面加载时将选择当前日期，月份，年份+包括你的需要 - 8个月

<form method="POST" action=""> 
<p><select size="1" name="day"> 
<?php formDay(); ?> 
</select>- 
<select size="1" name="month"> 
<?php formMonth(); ?> 
</select>- 
<select size="1" name="year"> 
<?php formYear(); ?> 
</select> <input type="submit" value="Submit"></p> 
</form> 

<?php 
//functions to loop day,month,year 
function formDay(){ 
    for($i=1; $i<=31; $i++){ 
     $selected = ($i==date('n'))? ' selected' :''; 
     echo '<option'.$selected.' value="'.$i.'">'.$i.'</option>'."\n"; 
    } 
} 
//with the -8/+8 month, meaning june is center month 
function formMonth(){ 
    $month = strtotime(date('Y').'-'.date('m').'-'.date('j').' - 8 months'); 
    $end = strtotime(date('Y').'-'.date('m').'-'.date('j').' + 8 months'); 
    while($month < $end){ 
     $selected = (date('F', $month)==date('F'))? ' selected' :''; 
     echo '<option'.$selected.' value="'.date('F', $month).'">'.date('F', $month).'</option>'."\n"; 
     $month = strtotime("+1 month", $month); 
    } 
} 

function formYear(){ 
    for($i=1980; $i<=date('Y'); $i++){ 
     $selected = ($i==date('Y'))? ' selected' :''; 
     echo '<option'.$selected.' value="'.$i.'">'.$i.'</option>'."\n"; 
    } 
} 
?> 

Answer 5

如果您需要打印像选择框的选项，请尝试使用此：

for($i=1;$i<13;$i++) 
print("<option>".date('F',strtotime('01.'.$i.'.2001'))."</option>");