如何合并在PHP中这2个数组? [英] How to merge these 2 arrays in PHP?
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问题描述
我有一个数组 $数组1
不同量键和值对的:
I have an array $array1
with different amount of key and value pairs:
Array
(
[0] => Array
(
[ID] => 39
[title] => Apple
)
[1] => Array
(
[ID] => 40
[title] => Orange
)
)
和另一个阵列 $数组2
:
Array
(
[0] => 273
[1] => 386
)
和我想要得到这样的:
Array
(
[0] => Array
(
[ID] => 39
[title] => Apple
[pages] => 273
)
[1] => Array
(
[ID] => 40
[title] => Orange
[pages] => 386
)
)
项目的每个阵列中的数量是相同的和相对应,所以,我们并不需要检查这一点,所以,如何合并会这样?
The number of items in each array is the same and the correspond, so, we don't need to check this, so, how to merge it like that?
推荐答案
使用 array_replace_recursive
如果你想与整数键,或合并array_merge_recursive
如果您希望只合并字符串键
use array_replace_recursive
if you want merge with integer keys, or array_merge_recursive
if you want merge only string keys
<?php
$a1 = array(
0 => array
(
"ID" => 39,
"title" => "Apple"
),
1 => array(
"ID" => 40,
"title" => "Orange"
)
);
$a2 = array(
0 => array
(
"pages" => 273,
"year" => 1981
),
1 => array(
"pages" => 386,
"year" => 1979
)
);
$a3 = array_replace_recursive($a1, $a2);
var_dump($a3);
结果:
array(2) {
[0] =>
array(4) {
'ID' =>
int(39)
'title' =>
string(5) "Apple"
'pages' =>
int(273)
'year' =>
int(1981)
}
[1] =>
array(4) {
'ID' =>
int(40)
'title' =>
string(6) "Orange"
'pages' =>
int(386)
'year' =>
int(1979)
}
}
答更新的问题:
<?php
$a1 = array(
0 => array
(
"ID" => 39,
"title" => "Apple"
),
1 => array(
"ID" => 40,
"title" => "Orange"
)
);
$a2 = array(
0 => 31,
1 => 324
);
$defaultValue = 0;
foreach ($a1 as $key => $value) {
$a1[$key]['pages'] = isset($a2[$key]) ? $a2[$key] : $defaultValue;
}
var_dump($a1);
结果:
array(2) {
[0] =>
array(3) {
'ID' =>
int(39)
'title' =>
string(5) "Apple"
'pages' =>
int(31)
}
[1] =>
array(3) {
'ID' =>
int(40)
'title' =>
string(6) "Orange"
'pages' =>
int(324)
}
}
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