array_merge
Description
The array_merge of Array for PHP merge one or more arrays.
If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. If, however, the arrays contain numeric keys, the later value will not overwrite the original value, but will be appended.
Syntax
array_merge(
array ...$arrays
): arrayParameters
arrays
Variable list of arrays to merge.
Return
Returns the resulting array. If called without any arguments, returns an empty array.
Examples
1 · void
<? $return = array_merge(); print_r($return); ?>
Array ( )
2 · arrays · one · indexed
<? $arrays = array(0, 1); $return = array_merge($arrays); print_r($return); ?>
Array
(
[0] => 0
[1] => 1
)
3 · arrays · one · associative
<?
$arrays = array("a" => 0, "b" => 1);
$return = array_merge($arrays);
print_r($return);
?>Array
(
[a] => 0
[b] => 1
)
4 · arrays · multiple · indexed
<? $arrays1 = array(0, 1); $arrays2 = array(2, 3); $return = array_merge($arrays1, $arrays2); print_r($return); ?>
Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
)
5 · arrays · multiple · associative
<?
$arrays1 = array("a" => 0, "b" => 1);
$arrays2 = array("c" => 2, "d" => 3);
$return = array_merge($arrays1, $arrays2);
print_r($return);
?>Array
(
[a] => 0
[b] => 1
[c] => 2
[d] => 3
)
6 · same key · indexed
<? $arrays1 = array(0, 1); $arrays2 = array(0 => 2, 1 => 3); $return = array_merge($arrays1, $arrays2); print_r($return); ?>
Array
(
[0] => 0
[1] => 1
[2] => 2
[3] => 3
)
7 · same key · associative
<?
$arrays1 = array("a" => 0, "b" => 1);
$arrays2 = array("a" => 2, "b" => 3);
$return = array_merge($arrays1, $arrays2);
print_r($return);
?>Array
(
[a] => 2
[b] => 3
)
Links
Related
Array
- array
- array_change_key_case
- array_chunk
- array_column
- array_combine
- array_count_values
- array_diff
- array_diff_assoc
- array_diff_key
- array_diff_uassoc
- array_diff_ukey
- array_fill
- array_fill_keys
- array_filter
- array_flip
- array_intersect
- array_intersect_assoc
- array_intersect_key
- array_intersect_uassoc
- array_intersect_ukey
- array_key_exists
- array_key_first
- array_key_last
- array_keys
- array_map
- array_merge_recursive
- array_multisort
- array_pad
- array_pop
- array_product
- array_push
- array_rand
- array_reduce
- array_replace
- array_replace_recursive
- array_reverse
- array_search
- array_shift
- array_slice
- array_splice
- array_sum
- array_udiff
- array_udiff_assoc
- array_udiff_uassoc
- array_uintersect
- array_uintersect_assoc
- array_uintersect_uassoc
- array_unique
- array_unshift
- array_values
- array_walk
- array_walk_recursive
- arsort
- asort
- compact
- count
- current
- end
- extract
- in_array
- key
- key_exists
- krsort
- ksort
- list
- natcasesort
- natsort
- next
- pos
- prev
- range
- reset
- rsort
- shuffle
- sizeof
- sort
- uasort
- uksort
- usort
