php 从常规数组创建具有相等键和值的关联数组
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Create an assoc array with equal keys and values from a regular array
提问by jimiyash
I have an array that looks like
我有一个看起来像的数组
$numbers = array('first', 'second', 'third');
I want to have a function that will take this array as input and return an array that would look like:
我想要一个函数，将这个数组作为输入并返回一个如下所示的数组：
array(
'first' => 'first',
'second' => 'second',
'third' => 'third'
)
I wonder if it is possible to use array_walk_recursiveor something similar...
我想知道是否可以使用array_walk_recursive或类似的东西......
回答by Noah Medling
You can use the array_combinefunction, like so:
您可以使用该array_combine功能，如下所示：
$numbers = array('first', 'second', 'third');
$result = array_combine($numbers, $numbers);
回答by Artem Russakovskii
This simple approach should work:
这种简单的方法应该有效：
$new_array = array();
foreach($numbers as $n){
$new_array[$n] = $n;
}
You can also do something like:
您还可以执行以下操作：
array_combine(array_values($numbers), array_values($numbers))
array_combine(array_values($numbers), array_values($numbers))
回答by Alan Storm
This should do it.
这应该这样做。
function toAssoc($array) {
$new_array = array();
foreach($array as $value) {
$new_array[$value] = $value;
}
return $new_array;
}
