PHP中合并数组且key值不变
一般PHP中合并两个数组都会使用array_merge()
例如:
$data1 = ['111' => 'aaa', '222' => 'bbb', '333' => 'ccc']; $data2 = ['444' => 'ddd', '555' => 'eee', '666' => 'fff']; $data = array_merge($data1, $data2); var_dump($data);
得到结果:
array(6) { [0]=> string(3) "aaa" [1]=> string(3) "bbb" [2]=> string(3) "ccc" [3]=> string(3) "ddd" [4]=> string(3) "eee" [5]=> string(3) "fff" }
可以看到使用array_merge()会重置key值,如果key值对我们有用,不想重置,可以使用"+"合并数组。
$data1 = ['111' => 'aaa', '222' => 'bbb', '333' => 'ccc']; $data2 = ['444' => 'ddd', '555' => 'eee', '666' => 'fff']; $data = $data1 + $data2; var_dump($data);
得到结果:
array(6) { [111]=> string(3) "aaa" [222]=> string(3) "bbb" [333]=> string(3) "ccc" [444]=> string(3) "ddd" [555]=> string(3) "eee" [666]=> string(3) "fff" }