我有两个数组$a和$b，它们在数组中包含"用户详细信息"。
以下是它的结构（即print_r()的输出）
print_r($a);
Array
(
[0] => Array
(
[user_id] => 109
[profile_page_id] => 0
[user_name] => profile-109
[full_name] => Hiten Patel
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile_100.png
)
[1] => Array
(
[user_id] => 1585
[profile_page_id] => 0
[user_name] => profile-1585
[full_name] => Sushil Kadam
[gender] => 0
[user_image] => 1585%s.jpg
[is_invisible] => 0
[user_group_id] => 7
[language_id] =>
[profile_image] => http://app.campusknot.com/file/pic/user/1585_100_square.jpg
)
[2] => Array
(
[user_id] => 185
[profile_page_id] => 0
[user_name] => profile-185
[full_name] => Perceus Mody
[gender] => 1
[user_image] => 185%s.peg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/file/pic/user/185_100_square.peg
)
[3] => Array
(
[user_id] => 196
[profile_page_id] => 0
[user_name] => profile-196
[full_name] => Ira Hampton
[gender] => 1
[user_image] => 2014/11/24c4a6835e667b67b82cea3666841ac7%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile.png
)
[4] => Array
(
[user_id] => 244
[profile_page_id] => 0
[user_name] => profile-244
[full_name] => Hiten Patel
[gender] => 2
[user_image] => 244%s.cza
[is_invisible] => 0
[user_group_id] => 7
[language_id] =>
[profile_image] => http://app.campusknot.com/file/pic/user/244_100_square.cza
)
)
第二个阵列如下：
print_r($b);
Array
(
[0] => Array
(
[user_id] => 244
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-244
[full_name] => Hiten Patel
[gender] => 2
[user_image] => 244%s.cza
[is_invisible] => 0
[user_group_id] => 7
[language_id] =>
)
[1] => Array
(
[user_id] => 1585
[profile_page_id] => 0
[user_server_id] => 0
[user_name] => profile-1585
[full_name] => Sushil Kadam
[gender] => 0
[user_image] => 1585%s.jpg
[is_invisible] => 0
[user_group_id] => 7
[language_id] =>
)
)
现在我想比较两个数组$a and $b，最后我想要细化的数组$a，它将不包含常见的数组元素，如下所示（数组键应该从0开始，并继续增加1）。
print_r($a); //after refinement, the desired output array
Array
(
[0] => Array
(
[user_id] => 109
[profile_page_id] => 0
[user_name] => profile-109
[full_name] => Hiten Patel
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile_100.png
)
[1] => Array
(
[user_id] => 185
[profile_page_id] => 0
[user_name] => profile-185
[full_name] => Perceus Mody
[gender] => 1
[user_image] => 185%s.peg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/file/pic/user/185_100_square.peg
)
[2] => Array
(
[user_id] => 196
[profile_page_id] => 0
[user_name] => profile-196
[full_name] => Ira Hampton
[gender] => 1
[user_image] => 2014/11/24c4a6835e667b67b82cea3666841ac7%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile.png
)
)
为了实现这个期望的输出结果，我尝试了下面的代码，但是没有得到我期望的精确输出结果。
//My attempted code
$a = $result=array_diff($a,$b);
我还尝试了array_diff_assoc()函数，但也没有得到所需的输出结果。
请有人在这方面指导我，以便获得所需的输出结果吗？
返回一个数组，该数组包含所提供的两个用户列表之间的差异。
1） 给定两个阵列：
- 完整的用户列表（$userListA）
- 所需的用户列表（$userListB）
生成一个数组，该数组包含$userListA中但$userListB中不的用户。
工作示例-eval.in；源代码-粘贴
有一个更高效的版本，在大型阵列中会更快。它在user_id上使用了一个"keyed"数组，因此可以在不扫描所有数组的情况下检查是否丢失。pastebin-缺少用户的比较数组-快速
代码：
/*
* This version is simple but will be slow for large arrays...
*
* Hmm... I may want to do a more efficient version later, so I will use a
* compare function now, so that I can easily change it later.
*/
/*
* Out Array:
* 1) In $userListA but not in $userListB
*/
$diffAfromB = array();
// check the input user list...
foreach ($userListA as $userA) {
// find the userA details in Array B
if (!matchUserAinB($userA, $userListB)) {
$diffAfromB[] = $userA;
}
}
// show otput...
var_dump($diffAfromB);
exit;
// -------------------------------------------------------------------------
/**
* Check if userA exists in userListB
*
* @param array $userA
* @param array $userListB
* @return boolean
*/
function matchUserAinB($userA, array $userListB)
{
$found = false;
foreach ($userListB as $userB) {
if ($userB['user_id'] === $userA['user_id']) {
$found = true;
break;
}
}
return $found;
}
输出：
array
0 =>
array
'user_id' => string '109' (length=3)
'profile_page_id' => string '0' (length=1)
'user_name' => string 'profile-109' (length=11)
'full_name' => string 'Hiten Patel' (length=11)
'gender' => string '0' (length=1)
'user_image' => string ''"'"' (length=4)
'is_invisible' => string '0' (length=1)
'user_group_id' => string '6' (length=1)
'language_id' => string '0' (length=1)
'profile_image' => string 'http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile_100.png' (length=92)
1 =>
array
'user_id' => string '185' (length=3)
'profile_page_id' => string '0' (length=1)
'user_name' => string 'profile-185' (length=11)
'full_name' => string 'Perceus Mody' (length=12)
'gender' => string '1' (length=1)
'user_image' => string '185%s.peg' (length=9)
'is_invisible' => string '0' (length=1)
'user_group_id' => string '6' (length=1)
'language_id' => string '0' (length=1)
'profile_image' => string 'http://app.campusknot.com/file/pic/user/185_100_square.peg' (length=58)
2 =>
array
'user_id' => string '196' (length=3)
'profile_page_id' => string '0' (length=1)
'user_name' => string 'profile-196' (length=11)
'full_name' => string 'Ira Hampton' (length=11)
'gender' => string '1' (length=1)
'user_image' => string '2014/11/24c4a6835e667b67b82cea3666841ac7%s.jpg' (length=46)
'is_invisible' => string '0' (length=1)
'user_group_id' => string '6' (length=1)
'language_id' => string '0' (length=1)
'profile_image' => string 'http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile.png' (length=88)
测试数据：
$sA = 'a:5:{i:0;a:10:{s:7:"user_id";s:3:"109";s:15:"profile_page_id";s:1:"0";s:9:"user_name";s:11:"profile-109";s:9:"full_name";s:11:"Hiten Patel";s:6:"gender";s:1:"0";s:10:"user_image";s:4:"'"'"";s:12:"is_invisible";s:1:"0";s:13:"user_group_id";s:1:"6";s:11:"language_id";s:1:"0";s:13:"profile_image";s:92:"http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile_100.png";}i:1;a:10:{s:7:"user_id";s:4:"1585";s:15:"profile_page_id";s:1:"0";s:9:"user_name";s:12:"profile-1585";s:9:"full_name";s:12:"Sushil Kadam";s:6:"gender";s:1:"0";s:10:"user_image";s:10:"1585%s.jpg";s:12:"is_invisible";s:1:"0";s:13:"user_group_id";s:1:"7";s:11:"language_id";s:1:"0";s:13:"profile_image";s:59:"http://app.campusknot.com/file/pic/user/1585_100_square.jpg";}i:2;a:10:{s:7:"user_id";s:3:"185";s:15:"profile_page_id";s:1:"0";s:9:"user_name";s:11:"profile-185";s:9:"full_name";s:12:"Perceus Mody";s:6:"gender";s:1:"1";s:10:"user_image";s:9:"185%s.peg";s:12:"is_invisible";s:1:"0";s:13:"user_group_id";s:1:"6";s:11:"language_id";s:1:"0";s:13:"profile_image";s:58:"http://app.campusknot.com/file/pic/user/185_100_square.peg";}i:3;a:10:{s:7:"user_id";s:3:"196";s:15:"profile_page_id";s:1:"0";s:9:"user_name";s:11:"profile-196";s:9:"full_name";s:11:"Ira Hampton";s:6:"gender";s:1:"1";s:10:"user_image";s:46:"2014/11/24c4a6835e667b67b82cea3666841ac7%s.jpg";s:12:"is_invisible";s:1:"0";s:13:"user_group_id";s:1:"6";s:11:"language_id";s:1:"0";s:13:"profile_image";s:88:"http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile.png";}i:4;a:10:{s:7:"user_id";s:3:"244";s:15:"profile_page_id";s:1:"0";s:9:"user_name";s:11:"profile-244";s:9:"full_name";s:11:"Hiten Patel";s:6:"gender";s:1:"2";s:10:"user_image";s:9:"244%s.cza";s:12:"is_invisible";s:1:"0";s:13:"user_group_id";s:1:"7";s:11:"language_id";s:1:"0";s:13:"profile_image";s:58:"http://app.campusknot.com/file/pic/user/244_100_square.cza";}}';
$userListA = unserialize($sA);
$sB = 'a:2:{i:0;a:10:{s:7:"user_id";s:3:"244";s:15:"profile_page_id";s:1:"0";s:14:"user_server_id";s:1:"0";s:9:"user_name";s:11:"profile-244";s:9:"full_name";s:11:"Hiten Patel";s:6:"gender";s:1:"2";s:10:"user_image";s:9:"244%s.cza";s:12:"is_invisible";s:1:"0";s:13:"user_group_id";s:1:"7";s:11:"language_id";s:1:"0";}i:1;a:10:{s:7:"user_id";s:4:"1585";s:15:"profile_page_id";s:1:"0";s:14:"user_server_id";s:1:"0";s:9:"user_name";s:12:"profile-1585";s:9:"full_name";s:12:"Sushil Kadam";s:6:"gender";s:1:"0";s:10:"user_image";s:10:"1585%s.jpg";s:12:"is_invisible";s:1:"0";s:13:"user_group_id";s:1:"7";s:11:"language_id";s:1:"0";}}';
$userListB = unserialize($sB);
您可以使用它，但可以根据您的数组更改索引，这只是如何解决问题的一个示例：
$a = array(
array('userid'=>109,
'profile_img'=>0,
'username'=>'test',
'lang'=>0),
array('userid'=>10,
'profile_img'=>0,
'username'=>'test2',
'lang'=>0),
array('userid'=>101,
'profile_img'=>0,
'username'=>'test',
'lang'=>0),
);
$b = array(
array('userid'=>100,
'profile_img'=>0,
'username'=>'test',
'lang'=>0),
array('userid'=>1011,
'profile_img'=>0,
'username'=>'test2',
'lang'=>0),
array('userid'=>101,
'profile_img'=>0,
'username'=>'test',
'lang'=>0),
);
$newArr1 = array();
foreach ($a as $key => $value) {
$newArr1[$value['userid']] = $value;
}
foreach ($b as $key => $value) {
$newArr2[$value['userid']] = $value;
}
echo "<pre>";
$diffArr1 = array_diff_key($newArr1, $newArr2);
$diffArr2 = array_diff_key($newArr2, $newArr1);
$finalArr = array_merge($diffArr1,$diffArr2);
print_r($finalArr);
结果如下：
Array
(
[0] => Array
(
[userid] => 109
[profile_img] => 0
[username] => test
[lang] => 0
)
[1] => Array
(
[userid] => 10
[profile_img] => 0
[username] => test2
[lang] => 0
)
[2] => Array
(
[userid] => 100
[profile_img] => 0
[username] => test
[lang] => 0
)
[3] => Array
(
[userid] => 1011
[profile_img] => 0
[username] => test2
[lang] => 0
)
)
首先，我给$output $a以获得$a 中的所有元素
然后我将其与$b进行比较，并删除$output 中存在的值
$output = $a;
foreach ($b as $k => $v) {
$exists = false;
foreach($output as $key => $value) {
if ($v == $value) {
unset($output[$key]);
$exists = true;
break;
} else {
continue;
}
}
if (!$exists) {
$output[] = $v;
}
}
echo '<pre>';
print_r($output);
echo '</pre>';
结果
Array
(
[0] => Array
(
[user_id] => 109
[profile_page_id] => 0
[user_name] => profile-109
[full_name] => Hiten Patel
[gender] => 0
[user_image] =>
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile_100.png
)
[1] => Array
(
[user_id] => 185
[profile_page_id] => 0
[user_name] => profile-185
[full_name] => Perceus Mody
[gender] => 1
[user_image] => 185%s.peg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/file/pic/user/185_100_square.peg
)
[2] => Array
(
[user_id] => 196
[profile_page_id] => 0
[user_name] => profile-196
[full_name] => Ira Hampton
[gender] => 1
[user_image] => 2014/11/24c4a6835e667b67b82cea3666841ac7%s.jpg
[is_invisible] => 0
[user_group_id] => 6
[language_id] =>
[profile_image] => http://app.campusknot.com/theme/frontend/foxplus/style/default/image/noimage/profile.png
)
)