带有起始索引的PHP重新排序数组

我一周有很多天。我想通过给出开始日期来重新订购阵列

$days_order = array("Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun");
echo '<pre>'; 
print_r($days_order); 
echo '</pre>';

问题：设置开始日期时如何重新订购阵列

注：索引值很重要

例如：

如果我将开始日期设置为Wed，那么数组将输出以下内容：

if (($i = array_search('Wed', $days_order)) !== false)
    $result = array_merge(array_slice($days_order, $i), array_slice($days_order, 0, $i));

试试这个：

$days_order = array("Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun");
$split_by = array_search("Wed", $days_order);

if ($split_by) {
    $first = array_slice($days_order, 0, $split_by);
    $second = array_slice($days_order, $split_by);
$result = array_merge($second, $first);
}
    print_r($result);

---

试着这样做：

$start_date = 'Wed';

for ($i=0; $i<7; $i++) $arr[$i] = date('D', strtotime("Next $start_date +$i days"));

---

不需要预先定义日期数组，只需循环遍历日期即可

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你的答案和我的完全一样

$days_order = array("Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun");
$split_by = array_search("Wed", $days_order);

if ($split_by) {
    $first = array_slice($days_order, 0, $split_by);
    $second = array_slice($days_order, $split_by);
$result = array_merge($second, $first);
}
    print_r($result);

$start_date = 'Wed';

for ($i=0; $i<7; $i++) $arr[$i] = date('D', strtotime("Next $start_date +$i days"));