php將一個二維數組按照某個字段值合並成一維數組，如果有重復則將重復的合並成二維數組
阿新 • • 發佈：2017-09-05
字段 轉載 () num 精簡 val 特定 數組 brush
版權聲明：本文為博主原創文章，未經博主允許不得轉載。
最近工作中碰到一個問題，用PHP將一個二維數組按照二維數組中的各個項中的某個特定字段值合並成一維數組，如果有重復則將重復的合並成二維數組，生成的二維數組的第一維的鍵是特定字段的值，二維的鍵可以是隨機索引，也可以是其中的另一個字段的值。其實這個需求經常會在工作中碰到，只是碰到的時候一個有重復的就直接用之前的覆蓋後面的或者用之後的覆蓋之前的，這樣很容易就可以處理了。很少碰到這種有一維數組又有二維數組的情況，先上代碼：
$a = array(
0 => array(‘target_id‘ => ‘22‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘15261‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
1 => array(‘target_id‘ => ‘22‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘2‘, ‘extension_number‘ => ‘66002‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => ‘1‘,),
14 => array(‘target_id‘ => ‘22‘, ‘target_type‘ => ‘1‘,‘phone_type‘ => ‘4‘, ‘extension_number‘ => ‘56431‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
2 => array(‘target_id‘ => ‘24‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘54876‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => ‘1‘,),
3 => array(‘target_id‘ => ‘25‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘07143‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
13 => array(‘target_id‘ => ‘24‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘0‘, ‘extension_number‘ => ‘96949‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
4 => array(‘target_id‘ => ‘26‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘94755‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
5 => array(‘target_id‘ => ‘30‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘14171‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
6 => array(‘target_id‘ => ‘36‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘54876‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => ‘1‘,),
7 => array(‘target_id‘ => ‘42‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘31354‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
8 => array(‘target_id‘ => ‘43‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘66810‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
9 => array(‘target_id‘ => ‘45‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘34868‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
10 => array(‘target_id‘ => ‘50‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘79523‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
11 => array(‘target_id‘ => ‘149‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘59438‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
12 => array(‘target_id‘ => ‘806‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘14780‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
);
$target = array();
$temp = array();
foreach ($a as $val) {
if (!empty($target)) {
if (in_array($val[‘target_id‘], array_keys($target))) {
if (!empty($temp[$val[‘target_id‘]])) {
$target[$val[‘target_id‘]] = null;
$target[$val[‘target_id‘]][$temp[$val[‘target_id‘]][‘phone_type‘]] = $temp[$val[‘target_id‘]];
$temp[$val[‘target_id‘]] = null;
}
$target[$val[‘target_id‘]][$val[‘phone_type‘]] = $val;
} else {
$temp[$val[‘target_id‘]] = $val;
$target[$val[‘target_id‘]] = $val;
}
} else {
$temp[$val[‘target_id‘]] = $val;
$target[$val[‘target_id‘]] = $val;
}
}
var_dump($target);exit; 這個返回的結果形如：
array
22 =>
array
1 =>
array
‘target_id‘ => string ‘22‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘15261‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
2 =>
array
‘target_id‘ => string ‘22‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘2‘ (length=1)
‘extension_number‘ => string ‘66002‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => string ‘1‘ (length=1)
4 =>
array
‘target_id‘ => string ‘22‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘4‘ (length=1)
‘extension_number‘ => string ‘56431‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
24 =>
array
1 =>
array
‘target_id‘ => string ‘24‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘54876‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => string ‘1‘ (length=1)
0 =>
array
‘target_id‘ => string ‘24‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘0‘ (length=1)
‘extension_number‘ => string ‘96949‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
25 =>
array
‘target_id‘ => string ‘25‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘07143‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
26 =>
array
‘target_id‘ => string ‘26‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘94755‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
30 =>
array
‘target_id‘ => string ‘30‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘14171‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
36 =>
array
‘target_id‘ => string ‘36‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘54876‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => string ‘1‘ (length=1)
42 =>
array
‘target_id‘ => string ‘42‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘31354‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
43 =>
array
‘target_id‘ => string ‘43‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘66810‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
45 =>
array
‘target_id‘ => string ‘45‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘34868‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
50 =>
array
‘target_id‘ => string ‘50‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘79523‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
149 =>
array
‘target_id‘ => string ‘149‘ (length=3)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘59438‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
806 =>
array
‘target_id‘ => string ‘806‘ (length=3)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘14780‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
如果不想要生成的二維數組的key值，或者說再精簡些，可以這樣：
$a = array(
0 => array(‘target_id‘ => ‘22‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘15261‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
1 => array(‘target_id‘ => ‘22‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘2‘, ‘extension_number‘ => ‘66002‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => ‘1‘,),
14 => array(‘target_id‘ => ‘22‘, ‘target_type‘ => ‘1‘,‘phone_type‘ => ‘4‘, ‘extension_number‘ => ‘56431‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
2 => array(‘target_id‘ => ‘24‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘54876‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => ‘1‘,),
3 => array(‘target_id‘ => ‘25‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘07143‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
13 => array(‘target_id‘ => ‘24‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘0‘, ‘extension_number‘ => ‘96949‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
4 => array(‘target_id‘ => ‘26‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘94755‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
5 => array(‘target_id‘ => ‘30‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘14171‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
6 => array(‘target_id‘ => ‘36‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘54876‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => ‘1‘,),
7 => array(‘target_id‘ => ‘42‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘31354‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
8 => array(‘target_id‘ => ‘43‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘66810‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
9 => array(‘target_id‘ => ‘45‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘34868‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
10 => array(‘target_id‘ => ‘50‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘79523‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
11 => array(‘target_id‘ => ‘149‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘59438‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
12 => array(‘target_id‘ => ‘806‘, ‘target_type‘ => ‘1‘, ‘phone_type‘ => ‘1‘, ‘extension_number‘ => ‘14780‘, ‘phone_id‘ => ‘1‘, ‘phone_number‘ => ‘4008285599‘, ‘extension_special‘ => NULL,),
);
$target = array();
$temp = array();
foreach ($a as $val) {
if (!empty($target)) {
if (in_array($val[‘target_id‘], array_keys($target))) {
if (!empty($temp[$val[‘target_id‘]])) {
$target[$val[‘target_id‘]] = null;
$target[$val[‘target_id‘]][] = $temp[$val[‘target_id‘]];
$temp[$val[‘target_id‘]] = null;
}
$target[$val[‘target_id‘]][] = $val;
} else {
$temp[$val[‘target_id‘]] = $val;
$target[$val[‘target_id‘]] = $val;
}
} else {
$temp[$val[‘target_id‘]] = $val;
$target[$val[‘target_id‘]] = $val;
}
}
var_dump($target);exit;
生成結果如：
array
22 =>
array
0 =>
array
‘target_id‘ => string ‘22‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘15261‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
1 =>
array
‘target_id‘ => string ‘22‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘2‘ (length=1)
‘extension_number‘ => string ‘66002‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => string ‘1‘ (length=1)
2 =>
array
‘target_id‘ => string ‘22‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘4‘ (length=1)
‘extension_number‘ => string ‘56431‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
24 =>
array
0 =>
array
‘target_id‘ => string ‘24‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘54876‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => string ‘1‘ (length=1)
1 =>
array
‘target_id‘ => string ‘24‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘0‘ (length=1)
‘extension_number‘ => string ‘96949‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
25 =>
array
‘target_id‘ => string ‘25‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘07143‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
26 =>
array
‘target_id‘ => string ‘26‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘94755‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
30 =>
array
‘target_id‘ => string ‘30‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘14171‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
36 =>
array
‘target_id‘ => string ‘36‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘54876‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => string ‘1‘ (length=1)
42 =>
array
‘target_id‘ => string ‘42‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘31354‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
43 =>
array
‘target_id‘ => string ‘43‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘66810‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
45 =>
array
‘target_id‘ => string ‘45‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘34868‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
50 =>
array
‘target_id‘ => string ‘50‘ (length=2)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘79523‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
149 =>
array
‘target_id‘ => string ‘149‘ (length=3)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘59438‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
806 =>
array
‘target_id‘ => string ‘806‘ (length=3)
‘target_type‘ => string ‘1‘ (length=1)
‘phone_type‘ => string ‘1‘ (length=1)
‘extension_number‘ => string ‘14780‘ (length=5)
‘phone_id‘ => string ‘1‘ (length=1)
‘phone_number‘ => string ‘4008285599‘ (length=10)
‘extension_special‘ => null
我這樣寫有些復雜，但是這種需求在網上很難搜到代碼，所以自己貼一份，給大家審查下，看看還有什麽更簡單的方法實現，畢竟我的算法學的還是挺差的。歡迎指點討論謝謝。
php將一個二維數組按照某個字段值合並成一維數組，如果有重復則將重復的合並成二維數組