我正在为计算机服务器开发一个简单的调度程序，需要采用以下数组：
Array
(
[Mon] => false,
[Tues] => true,
[Wed] => false,
[Thurs] => true,
[Fri] => true,
[Sat] => true,
[Sun] => false
)
并得到一个像这样返回的数组：
Array
(
'Thurs', 'Fri', 'Sat'
)
基本上，我正在寻找数组连续True两次以上的实例。可能是星期一，星期二，星期三，可能是星期五，星期六，星期日，但不可能是星期一，星期三，星期四。
我的第一个想法是提出每一种可能性并将其硬编码为一个数组，然后foreach每种可能性，但这花了太长时间并且感觉很草率。
谢谢
这将返回第一个序列 3，如果不存在这样的序列，则返回一个空数组：
function getDays(array $schedule) {
$sequence = array();
foreach($schedule as $day => $value) {
if($value) {
$sequence[] = $day;
// check if we have enough trues to exit
if(count($sequence) > 2) {
break;
}
}
else {
// we found a false, so reset any existing sequence
$sequence = array();
}
}
return $sequence;
}
$schedule = array(
'Mon' => false,
'Tues' => true,
'Wed' => false,
'Thurs' => true,
'Fri' => true,
'Sat' => true,
'Sun' => false
);
print_r(getDays($schedule));
输出：
Array
(
[0] => Thurs
[1] => Fri
[2] => Sat
)
以下内容应该适用于任意天数
$days = array('Mon' => 'false', 'Tues' => 'true',
'Wed' => 'false', 'Thurs' => 'true',
'Fri' => 'true', 'Sat' => 'true',
'Sun' => 'false');
while ($day = array_shift($days)) {
if($day == next($days)) {
$result[] = array_search($day, $days)."<br/>";
}
}
print_r($result);
结果：
Array
(
[0] => Wed
[1] => Thurs
[2] => Fri
)
看看它的实际效果！
<?php
$daysTest = array(
'0-Thurs,Fri,Sat' => array('Mon' => false, 'Tues' => true,'Wed' => false, 'Thurs' => true,'Fri' => true, 'Sat' => true,'Sun' => false)
,'1-Thurs,Fri,Sat' => array('Mon' => true, 'Tues' => true,'Wed' => false, 'Thurs' => true,'Fri' => true, 'Sat' => true,'Sun' => false)
,'2-Mon,Tues,Wed,Thurs,Fri,Sat,Sun' => array('Mon' => true, 'Tues' => true,'Wed' => true, 'Thurs' => true,'Fri' => true, 'Sat' => true,'Sun' => false)
,'3-' => array('Mon' => false, 'Tues' => true,'Wed' => false, 'Thurs' => true,'Fri' => false, 'Sat' => true,'Sun' => true)
);
$minLength = 3;
foreach ($daysTest as $target => $days) {
$result = array();
$stack = array();
foreach ($days as $key => $match) {
if ( $match ) {
$stack[] = $key;
}
else {
if ( $minLength <= count($stack)) {
$result += $stack;
}
$stack = array();
}
}
if ( $minLength <= count($stack)) {
$result += $stack;
}
echo 'Result:',implode(',',$result),"'n";
echo 'Target:',$target,"'n";
}