对数组的键模式匹配 [英] Pattern Match on a Array Key
问题描述
我需要获得股票价值出这个数组:
I need to get the stock values out of this array:
Array (
[stock0] => 1
[stockdate0] =>
[stock1] => 3
[stockdate1] => apple
[stock2] => 2 [
stockdate2] =>
)
我需要这个数组,数组键=股+ 1通配符的模式匹配。
我已经使用数组过滤功能,以获取有关PHP手册每隔值尝试,但
空值似乎把它扔出去。我尝试了很多不同的东西,我发现,但没有什么工作。
I need to pattern match on this array, where the array key = "stock" + 1 wildcard character. I have tried using the array filter function to get every other value on the PHP manual but the empty values seem to throw it out. I tried alot of different things I found but nothing is working.
可以这样做?
推荐答案
array_filter没有访问密钥,因此不适合你的工作的工具。
array_filter does not have access to the key and therefore is not the right tool for your job.
我相信你在找什么做的是这样的:
I belive what you're looking to do is this:
$stocks = Array (
"stock0" => 1,
"stockdate0" => '',
"stock1" => 3,
"stockdate1" => 'apple',
"stock2" => 2,
"stockdate2" => ''
);
$stockList = array(); //Your list of "stocks" indexed by the number found at the end of "stock"
foreach ($stocks as $stockKey => $stock)
{
sscanf($stockKey,"stock%d", &stockId); // scan into a formatted string and return values passed by reference
if ($stockId !== false)
$stockList[$stockId] = $stock;
}
现在$ stockList看起来是这样的:
Now $stockList looks like this:
Array (
[0] => 1
[1] => 3
[2] => 2
)
您可能需要用它来小题大做了一点,但我觉得这是你所要求的东西。
You may need to fuss with it a bit, but I think this is what you are asking for.
不过,您是否有这样做的选择真的应该跟随杰夫·奥伯的意见。
HOWEVER, you really should be following Jeff Ober's advice if you have the option to do so.
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