PHP has plenty of useful functions and Im wondering if Im overlooking one that has already been built.
PHP有很多有用的功能,我想知道我是否可以忽略已经构建的功能。
Lets say you have an array such as:
假设您有一个数组,例如:
$first_array = array("Name"=>"Angela", "Age"=>24);
and you wanted to grab the keys from the first array to create a second array (which could then be pushed into a third array). So you need to create:
并且你想从第一个数组中获取键以创建第二个数组(然后可以将其推入第三个数组)。所以你需要创建:
$second_array = array("Name", "Age");
Is there a way to achieve this result without this loop?:
有没有办法在没有这个循环的情况下实现这个结果?:
foreach($first_array as $k=>$v){
array_push($second_array, $k);
}
2 个解决方案
#1
1
This should do it:
这应该这样做:
array_keys($first_array);
#2
0
Use array_keys($first_array)
to get the array of all the keys in the $first_array
使用array_keys($ first_array)获取$ first_array中所有键的数组
#1
1
This should do it:
这应该这样做:
array_keys($first_array);
#2
0
Use array_keys($first_array)
to get the array of all the keys in the $first_array
使用array_keys($ first_array)获取$ first_array中所有键的数组