下面是示例数组：
$arr = array(array (
'country' =>
array (
'code' => 'in',
'name' => 'India',
),
'language' =>
array (
'code' => 'en',
'name' => 'English',
),
),
array (
'country' =>
array (
'code' => 'in',
'name' => 'India',
),
'language' =>
array (
'code' => 'hi',
'name' => 'Hindi',
),
),
array (
'country' =>
array (
'code' => 'id',
'name' => 'Indonesia',
),
'language' =>
array (
'code' => 'id',
'name' => 'Indonesian',
),
),
array (
'country' =>
array (
'code' => 'it',
'name' => 'Italy',
),
'language' =>
array (
'code' => 'it',
'name' => 'Italian',
),
),
array (
'country' =>
array (
'code' => 'jp',
'name' => 'Japan',
),
'language' =>
array (
'code' => 'ja',
'name' => 'Japanese',
),
),
array (
'country' =>
array (
'code' => 'mx',
'name' => 'Mexico',
),
'language' =>
array (
'code' => 'es',
'name' => 'Spanish; Castilian',
),
),
array (
'country' =>
array (
'code' => 'nl',
'name' => 'Netherlands',
),
'language' =>
array (
'code' => 'nl',
'name' => 'Dutch',
),
),
array (
'country' =>
array (
'code' => 'ng',
'name' => 'Nigeria',
),
'language' =>
array (
'code' => 'en',
'name' => 'English',
),
),
array (
'country' =>
array (
'code' => 'no',
'name' => 'Norway',
),
'language' =>
array (
'code' => 'no',
'name' => 'Norwegian',
),
),
array (
'country' =>
array (
'code' => 'pk',
'name' => 'Pakistan',
),
'language' =>
array (
'code' => 'en',
'name' => 'English',
),
),
array (
'country' =>
array (
'code' => 'ph',
'name' => 'Philippines',
),
'language' =>
array (
'code' => 'en',
'name' => 'English',
),
));
您可能已经注意到，在上面的数组中，印度被提到了两次，现在，我想要的是，如果两个或多个数组包含相同的国家/地区，那么包含相同国家/地区的所有数组都变成一个数组，如下所示：
$arr = array (array (
'country' =>
array (
'code' => 'in',
'name' => 'India',
),
'language' => array(
array (
'code' => 'en',
'name' => 'English',
),
array (
'code' => 'hi',
'name' => 'Hindi',
),
)
)
);
其余数组保持原样。
像这样的事情可能一开始就有效：
<?php
$Data = array (
array (
'country' => array (
'code' => 'in',
'name' => 'India'
),
'language' => array (
'code' => 'en',
'name' => 'English'
)
),
array (
'country' => array (
'code' => 'in',
'name' => 'India'
),
'language' => array (
'code' => 'hi',
'name' => 'Hindu'
)
),
array (
'country' => array (
'code' => 'id',
'name' => 'Indonesia'
),
'language' => array (
'code' => 'id',
'name' => 'Indonesian'
)
),
array (
'country' => array (
'code' => 'it',
'name' => 'Italy',
),
'language' => array (
'code' => 'it',
'name' => 'Italian'
)
),
array (
'country' => array (
'code' => 'jp',
'name' => 'Japan'
),
'language' => array (
'code' => 'ja',
'name' => 'Japanese'
)
),
array (
'country' => array (
'code' => 'mx',
'name' => 'Mexico'
),
'language' => array (
'code' => 'es',
'name' => 'Spanish; Castilian'
)
),
array (
'country' => array (
'code' => 'nl',
'name' => 'Netherlands'
),
'language' => array (
'code' => 'nl',
'name' => 'Dutch'
)
),
array (
'country' => array (
'code' => 'ng',
'name' => 'Nigeria'
),
'language' => array (
'code' => 'en',
'name' => 'English'
)
),
array (
'country' => array (
'code' => 'no',
'name' => 'Norway'
),
'language' => array (
'code' => 'no',
'name' => 'Norwegian'
)
),
array (
'country' => array (
'code' => 'pk',
'name' => 'Pakistan'
),
'language' => array (
'code' => 'en',
'name' => 'English'
)
),
array (
'country' => array (
'code' => 'ph',
'name' => 'Philippines'
),
'language' => array (
'code' => 'en',
'name' => 'English'
)
),
array (
'country' => array (
'code' => 'nl',
'name' => 'Netherlands'
),
'language' => array (
'code' => 'en',
'name' => 'English'
)
)
);
function ProcessData ($Data) {
$Res = array ();
$m = array ();
foreach ($Data as $k => $v) {
$Country = $v ['country'];
if (in_array ($Country ['name'], $m)) {
continue;
}
$Lang = array ();
$Lang [] = $v ['language'];
for ($i = $k + 1, $l = count ($Data); $i < $l; $i++) {
if ($Data [$i] ['country'] ['name'] === $Country ['name']) {
$Lang [] = $Data [$i] ['language'];
}
}
$m [] = $Country ['name'];
$Res [] = array (
'country' => $v ['country'] ['name'],
'language' => $Lang
);
}
return $Res;
}
print_r (ProcessData ($Data));
?>
给：
Array
(
[0] => Array
(
[country] => India
[language] => Array
(
[0] => Array
(
[code] => en
[name] => English
)
[1] => Array
(
[code] => hi
[name] => Hindu
)
)
)
[1] => Array
(
[country] => Indonesia
[language] => Array
(
[0] => Array
(
[code] => id
[name] => Indonesian
)
)
)
[2] => Array
(
[country] => Italy
[language] => Array
(
[0] => Array
(
[code] => it
[name] => Italian
)
)
)
[3] => Array
(
[country] => Japan
[language] => Array
(
[0] => Array
(
[code] => ja
[name] => Japanese
)
)
)
[4] => Array
(
[country] => Mexico
[language] => Array
(
[0] => Array
(
[code] => es
[name] => Spanish; Castilian
)
)
)
[5] => Array
(
[country] => Netherlands
[language] => Array
(
[0] => Array
(
[code] => nl
[name] => Dutch
)
[1] => Array
(
[code] => en
[name] => English
)
)
)
[6] => Array
(
[country] => Nigeria
[language] => Array
(
[0] => Array
(
[code] => en
[name] => English
)
)
)
[7] => Array
(
[country] => Norway
[language] => Array
(
[0] => Array
(
[code] => no
[name] => Norwegian
)
)
)
[8] => Array
(
[country] => Pakistan
[language] => Array
(
[0] => Array
(
[code] => en
[name] => English
)
)
)
[9] => Array
(
[country] => Philippines
[language] => Array
(
[0] => Array
(
[code] => en
[name] => English
)
)
)
)
我找到了另一个解决方案，但@anders代码也有效！
$res = array();
foreach($arr as $val)
{
if(!isset($res[$val['country']['name']]))
$res[$val['country']['name']] = array('code'=>$val['country']['code'], 'name'=>$val['country']['name'], 'language'=>array());
$res[$val['country']['name']]['language'][] = array('code'=>$val['language']['code'], 'name'=>$val['language']['name']);
}
echo "<pre>";
print_r(var_export(array_values($res)));
echo "</pre>";
这是工作示例的演示。