php 使用键从 foreach 循环创建数组
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Create array from foreach loop with key
提问by Reg
I couldn't quite find the exact solution that I am looking for.
我无法完全找到我正在寻找的确切解决方案。
I am trying to create an array from a foreach loop that retains the key. Here is the code I have so far but it only keeps the last value in the array:
我正在尝试从保留键的 foreach 循环创建一个数组。这是我到目前为止的代码，但它只保留数组中的最后一个值：
foreach($links as $link) {
//runs scrape_amazon function for each of the links
$ret = scrape_amazon($link);
foreach($ret as $key => $value) {
//echo $key;
//echo $value;
$final_results[$key] = $value;
}
}
Could anyone help with a solution to keep all the values and the keys?
任何人都可以帮助解决保留所有值和键的解决方案吗？
Thanks in advance!
提前致谢！
回答by Francois Deschenes
Based on your most recent comment, this should solve your problem:
根据您最近的评论，这应该可以解决您的问题：
$ret = array();
foreach($links as $link) {
$ret[] = scrape_amazon($link);
}
Each time scrape_amazon()is called, it'll add the array returned to $retmaking it into an array of arrays.
每次scrape_amazon()调用时，它都会添加返回的数组以$ret使其成为数组数组。
回答by Adithya Surampudi
If you need an array of just keys, you need to do this
如果您只需要一组键，则需要执行此操作
$ret_keys = array_keys($ret);
回答by Ben
why did you do that ? it's look like :
你为什么这么做 ？它看起来像：
$final_results = $ret;
回答by Playnox
// Create an empty array first
$final_results = array();
foreach($links as $link) {
//runs scrape_amazon function for each of the links
$ret = scrape_amazon($link);
$final_results[] = $ret; // DONE :)
}
