我是 PHP 和 CodeIgniter 的新手。所以我有一个像这样的数据库查询结果:
Result = array(
A = array(
[a]=>'1',
[b] =>'2',
);
B = array(
[a] =>'1',
[b] =>'3',
);
C = array(
[a] =>'1',
[b] =>'4',
);
**and more...**
);
那么我怎样才能像这样将它们合并成一个数组:
Result = array(
Z = array(
[a] =>'1',
[b] => array(
[0] =>'2',
[1] =>'3',
[2] =>'4',
);
);
非常感谢...
最佳答案
$A = array( 'a' => '1', 'b' => '2', 'c' => '3');
$B = array( 'a' => '1', 'b' => '3', 'd' => '4');
$C = array( 'a' => '1', 'b' => '4', 'c' => '5');
$Result = array($A, $B, $C);
$Z = array();
foreach ($Result as $set) {
foreach ($set as $key => $val) {
if (isset($Z[$key])) {
if (is_array($Z[$key])) {
$Z[$key][] = $val;
} elseif ($Z[$key] != $val) {
$Z[$key] = array($Z[$key], $val);
}
} else {
$Z[$key] = $val;
}
}
}
print_r($Z);
输出
Array
(
[a] => 1
[b] => Array
(
[0] => 2
[1] => 3
[2] => 4
)
[c] => Array
(
[0] => 3
[1] => 5
)
[d] => 4
)
如果你想要每个键的唯一值,例如,如果你想避免 a
等于 array(1, 1, 2)
,那么你可以这样做:
$Z = array();
foreach ($Result as $set) {
foreach ($set as $key => $val) {
if (!isset($Z[$key])) {
$Z[$key] = array();
}
$Z[$key][] = $val;
}
}
foreach($Z as $k => $v) {
$newv = array_unique($v);
if (count($newv) == 1) {
$Z[$k] = $newv[0];
} else {
$Z[$k] = $newv;
}
}
print_r($Z);
关于php - 在查询结果中将不同的数组合并为一个数组,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/13774820/