php 从php while循环生成数组
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generate array from php while loop
提问by grantiago
I want to run a while(or any) loop to output a small list of dates as an array
我想运行一个while（或任何）循环来输出一个小的日期列表作为数组
$start = $day = strtotime("-1 day");
$end = strtotime('+6 day');
while($day < $end)
{
echo date('d-M-Y', $day) .'<br />';
$day = strtotime("+1 day", $day) ;
}
This works fine for printing, but I want to save it as an array (and insert it in a mysql db). Yes! I don't know what I'm doing.
这适用于打印，但我想将其保存为数组（并将其插入到 mysql 数据库中）。是的！我不知道我在做什么。
回答by Bogdan
to create a array, you need to first initialize it outside your loop (because of variable scoping)
要创建一个数组，您需要先在循环外初始化它（因为变量范围）
$start = $day = strtotime("-1 day");
$end = strtotime('+6 day');
$dates = array(); //added
while($day < $end)
{
$dates[] = date('d-M-Y', $day); // modified
$day = strtotime("+1 day", $day) ;
}
echo "<pre>";
var_dump($dates);
echo "</pre>";
you can then use your dates using either foreachor while
然后您可以使用您的日期使用foreach或while
foreach approach :
foreach 方法：
foreach($dates as $date){
echo $date."<br>";
}
while approach :
而方法：
$max = count($dates);
$i = 0;
while($i < $max){
echo $dates[$i]."<br>";
}
回答by Niet the Dark Absol
$arr = Array();
while(...) {
$arr[] = "next element";
...
}
The []adds a new element to an array, just like push()but without the overhead of calling a function.
在[]一个阵列增加了一个新的元素，就像push()但是没有调用函数的开销。
回答by Aatch
The simple way is just:
简单的方法就是：
$start = $day = strtotime("-1 day");
$end = strtotime('+6 day');
$arr = array();
while($day < $end)
{
$arr[] = date('d-M-Y', $day);
$day = strtotime("+1 day", $day) ;
}
// Do stuff with $arr
the $arr[] = $varis the syntax for appending to an array in PHP. Arrays in php do not have a fixed size and therefore can be appended to easily.
这$arr[] = $var是在 PHP 中追加到数组的语法。php 中的数组没有固定的大小，因此可以很容易地附加到。
