我需要通过键aa => "value"
$array1 = array(
"aa" => array("RM","PR","LE"),
"bb" => array("100a","200a","300a"),
"cc" => array("1.99b","2.99b","3.99b")
);
第二个数组可能每个键有额外的值,在这个例子中注意“aa”键中的“ST”值。
$array2 = array(
"aa" => array("RM","PR","ST","LE"),
"dd" => array("UK","UK","UK","UK"),
"ee" => array("123","456","000","789")
);
最终成为这样的1个数组。
$final_array = array(
"aa" => array("RM","PR","ST","LE"),
"bb" => array("100a","200a",null,"300a"),
"cc" => array("1.99b","2.99b",null,"3.99b")
"dd" => array("UK","UK","UK","UK"),
"ee" => array("123","456","000","789"),
);
在所有位置产生空值。
它需要像MySQL连接一样处理,array_merge()
和array_merge_recursive()
将无效。
有什么想法吗?提前谢谢。
答案 0 :(得分:1)
假设$array2
总是大于$array1
且数组计数的差异等于1且比较在密钥'aa'
// Get keys of each array, then merge, then get unique
$all_keys = array_unique(array_merge(array_keys($array1), array_keys($array2)));
// Get difference of 'aa' then the key
$diff_key = key(array_diff($array2['aa'], $array1['aa']));
// Set `$final_array` as equal to `$array1`
$final_array = $array1;
// Loop thru each keys
foreach ($all_keys as $key) {
// Check if `$array1` has the key
if (isset($array1[$key])) {
// Check if `$array2` also has the key
if (isset($array2[$key])) {
// Splice array to add element of `$array2` to final array
array_splice($final_array[$key], $diff_key, 0, $array2[$key][$diff_key]);
} else {
// Splice array to add empty element
array_splice($final_array[$key], $diff_key, 0, '');
}
} else {
// Add `$array2` element to `$final_array`
$final_array[$key] = $array2[$key];
}
}
print_r($final_array);
答案 1 :(得分:0)
尝试使用你的逻辑
$array1 = array(
"aa" => array("RM","PR","LE"),
"bb" => array("100a","200a","300a"),
"cc" => array("1.99b","2.99b","3.99b")
);
$array2 = array(
"aa" => array("RM","PR","ST","LE"),
"dd" => array("UK","UK","UK","UK"),
"ee" => array("123","456","000","789")
);
$arr=array_merge_recursive($array1,$array2);
$new_arr=array();
foreach($arr as $key=>$val){
$new_arr[$key]=array_unique($val);
}
echo "<pre>";
print_r($new_arr);
答案 2 :(得分:0)
试试这个
$len1 = count($array1['aa']);
$len2 = count($array2['aa']);
$final_array = array();
for($i = 0; $i < $len2; $i++){
$final_array['aa'][$i] = $array2['aa'][$i];
if($array2['aa'][$i] != $array1['aa'][$i]){
$final_array['bb'][$i] = 'null';
$final_array['cc'][$i] = 'null';
$final_array['dd'][$i] = $array2['dd'][$i];
$final_array['ee'][$i] = $array2['ee'][$i];
}else{
$final_array['bb'][$i] = $array1['bb'][$i];
$final_array['cc'][$i] = $array1['cc'][$i];
$final_array['dd'][$i] = $array2['dd'][$i];
$final_array['ee'][$i] = $array2['ee'][$i];
}
if($array2['aa'][$i] == $array1['aa'][$i-1]){
$final_array['bb'][$i] = $array1['bb'][$i-1];
$final_array['cc'][$i] = $array1['cc'][$i-1];
}
}
print_r($final_array);
签入实时演示:https://eval.in/920223
OUTPUT如下:
Array
(
[aa] => Array
(
[0] => RM
[1] => PR
[2] => ST
[3] => LE
)
[bb] => Array
(
[0] => 100a
[1] => 200a
[2] => null
[3] => 300a
)
[cc] => Array
(
[0] => 1.99b
[1] => 2.99b
[2] => null
[3] => 3.99b
)
[dd] => Array
(
[0] => UK
[1] => UK
[2] => UK
[3] => UK
)
[ee] => Array
(
[0] => 123
[1] => 456
[2] => 000
[3] => 789
)
)