I am wondering how can I store all values from a foreach loop, I know that I am re-initialising in the loop but I'm not sure how to store the data. Heres my basic loop:
$array = array("v1", "v2", "v3", "v4");
foreach($array as $row){
$arr = array('val' => $row);
echo $row;
}
print_r($arr);
So when I use the print_r($arr) the only thing outputted would be v4 and I know that the values are there because the echo $row; does return each output individually.
My question would be how can I store each instance of row in my array?
我想知道如何存储来自foreach循环的所有值，我知道我正在重新初始化 循环，但我不知道如何存储数据。 继承我的基本循环：
$ array = array（“v1”，“v2”，“v3”，“v4”）;
foreach（$ array as $ row） {
$ arr = array（'val'=＆gt; $ row）;
echo $ row;
}
nprint_r（$ arr）;
所以当我使用 print_r（$ arr）时，输出的唯一内容就是 v4 ，我知道值是因为 echo $ row; < / code>确实单独返回每个输出。
我的问题是如何将每个行实例存储在我的数组中？
Create a new array, fill it:
微信扫一扫$array = array("v1", "v2", "v3", "v4");
$newArray = array();
foreach($array as $row){
// notice the brackets
$newArray[] = array('val' => $row);
}
print_r($newArray);
It looks like you are storing your array wrong.
Try adjusting the $arr = array('val' => $row);
to:
$arr[] = array('val' => $row);
This will set it so you pick up each line as a separate array which you can easily navigate through.
Hope this helps!
If I'm reading correctly, you want to transform your array from simple values to key-value pairs of 'val'->number. array_map is a concise way of doing this sort of transformation.
$array = array("v1", "v2", "v3", "v4");
$arr = array_map(function($v) { return array('val'=>$v); }, $array);
print_r($arr);
While it doesn't matter in this case, array_map also has the handy feature of preserving your keys, in case that is desired.
Note that you can also provide a named function to array_map, instead of providing the implementation inline, which can be nice in the event that your transform method gets more complicated. More on array_map here.