如何在php中合并两个数组？

Question

I have the following arrays which I'd like to combine / merge to create a single array that I can loop through to add images and their respective titles to a database.

Array 1:

[0] => array(1) {
  ["filename"] => string(22) "1463668615_1_image.jpg"
}
[1] => array(1) {
  ["filename"] => string(22) "1463668641_1_image.jpg"
}

Array 2:

[0] => array(1) {
  ["title"] => string(15) "My image title"
}
[1] => array(1) {
  ["title"] => string(5) "Title"
}

Here's the format of the array I'd like to create.

Merged Arrays:

[0] => array(2) {
  ["filename"] => string(22) "1463668615_1_image.jpg",
  ["title"] => string(3) "My image title"
}
[1] => array(2) {
  ["filename"] => string(22) "1463668641_1_image.jpg",
  ["title"] => string(0) "Title"
}

Answer 1

array_merge() is the way just use it as the callback in array_map():

$result = array_map('array_merge', $array1, $array2);