Array
(
[0] => Array
(
[Access ID] => 12345
[Registration Date] => 2018-02-27
[First Name] => Damian
[Last Name] => Martin
[Flying Tour] =>
)
[1] => Array
(
[Access ID] => 12345
[Registration Date] => 2018-02-27
[First Name] => Damian
[Last Name] => Martin
[Flying Tour] => Yes going
)
[2] => Array
(
[Access ID] => 789456
[Registration Date] => 2018-03-27
[First Name] => Ricky
[Last Name] => Smith
[Flying Tour] =>
)
[3] => Array
(
[Access ID] => 789456
[Registration Date] => 2018-03-27
[First Name] => Ricky
[Last Name] => Smith
[Flying Tour] => Two way going
)
[4] => Array
(
[Access ID] => 987654
[Registration Date] => 2018-04-27
[First Name] => Darron
[Last Name] => Butt
[Flying Tour] =>
)
)
$results = [];
foreach($data as $input){
$isDuplicate = false;
foreach($results as $result){
if(
strtolower($input['First Name'])===strtolower($result['First Name']) &&
strtolower($input['Last Name'])===strtolower($result['Last Name']) &&
strtolower($input['Registration ID'])===strtolower($result['Registration ID']) &&
strtolower(!empty($input['Flying Tour']))
){
//a duplicate was found in results
$isDuplicate = true;
break;
}
}
//if no duplicate was found
if(!$isDuplicate) $results[]=$input;
}
查找重复值并移除一个并选择一个。除了飞行巡视条件添加不能返回正确的输出外，它确实适用于所有人。
这应该归还。我不知道我哪里出错了，请再次指导谢谢 哦，我希望这应该是
Array
(
[0] => Array
(
[Access ID] => 12345
[Registration Date] => 2018-02-27
[First Name] => Damian
[Last Name] => Martin
[Flying Tour] => Yes going
)
[1] => Array
(
[Access ID] => 789456
[Registration Date] => 2018-03-27
[First Name] => Ricky
[Last Name] => Smith
[Flying Tour] => Two way going
)
[2] => Array
(
[Access ID] => 987654
[Registration Date] => 2018-04-27
[First Name] => Darron
[Last Name] => Butt
[Flying Tour] =>
)
)
请进行一些更改，请参阅
答案 0 :(得分：0)
这里的要点是，对于第一次运行，$results仍为空。因此，可以设置$isDuplicate = true的整个逻辑永远不会为第一个实例运行。
这意味着对于第一条记录$isDuplicate = false，因此它将始终被添加。
此外，strtolower(!empty($input['Flying Tour']))有点奇怪......我认为应该给出错误（即使它没有...）
您应该将!empty($input['Flying Tour'])移到for循环之外，因为它不需要新数组中的当前值来进行检查。这将解决问题。
if(!$isDuplicate && !empty($input['Flying Tour'])) $results[]=$input;
如果您想学习和改进代码，请查看array_filter为此目的：过滤数组结果。
- 修改
foreach($results as $id => $result){
if(
strtolower($input['First Name'])===strtolower($result['First Name']) &&
strtolower($input['Last Name'])===strtolower($result['Last Name']) &&
strtolower($input['Registration ID'])===strtolower($result['Registration ID']))
){
// Check if the $results value for Flying Tour is empty
// if yes: update its value $results[ $id ]['Flying Tour'] = $input['Flying Tour'], but still mark as duplicate(!)
//a duplicate was found in results
$isDuplicate = true;
break;
}
}
答案 1 :(得分：0)
使用foreach()和数组键检查重复项： -
$results = [];
foreach($data as $input){
if(!isset($results[$input['Access ID'].'_'.$input['First Name'].'_'.$input['Last Name']])){
$results[$input['Access ID'].'_'.$input['First Name'].'_'.$input['Last Name']] = $input;
}else{
if($results[$input['Access ID'].'_'.$input['First Name'].'_'.$input['Last Name']]['Flying Tour'] ==''){
$results[$input['Access ID'].'_'.$input['First Name'].'_'.$input['Last Name']] = $input;
}
}
}
$results = array_values($results);
//array_multisort( array_column($results, "First Name"), SORT_ASC, $results );
echo "<pre/>";print_r($results);
答案 2 :(得分：0)
从应该唯一的值中创建一个键。
如果$results中每个循环数组中的组合键不存在，请将其包含在结果中。
此外，如果组合键存在且Flying Tour值为空，则替换为新数组。
$results = [];
foreach ($data as $input) {
$key = implode([
$input['First Name'],
$input['Last Name'],
$input['Access ID']
], '-');
if (array_key_exists($key, $results)
&& !empty($results[$key]['Flying Tour'])) continue;
$results[$key] = $input;
}
var_dump(array_values($results));
答案 3 :(得分：0)
使用MessageBox迭代Private Sub UserControl_Load(sender As Object, e As EventArgs) Handles MyBase.Load
If Not Site Is Nothing AndAlso Site.DesignMode Then
If Not ParentForm.FormBorderStyle = FormBorderStyle.None Then
MessageBox.Show("This control works better with a borderless form!!!", "Control Info", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
End If
End If
End Sub
。通过foreach变量存储重复信息，并使用它来删除重复值。
<强>替代：
$data答案 4 :(得分：0)
你可以试试这个：
<?php
$data = Array
(
'0' => Array
(
'Access ID' => 12345,
'Registration Date' => '2018-02-27',
'First Name' => 'Damian',
'Last Name' => 'Martin',
'Flying Tour' => ''
),
'1' => Array
(
'Access ID' => 12345,
'Registration Date' => '2018-02-27',
'First Name' => 'Damian',
'Last Name' => 'Martin',
'Flying Tour' => 'Yes going'
),
'2' => Array
(
'Access ID' => 789456,
'Registration Date' => '2018-03-27',
'First Name' => 'Ricky',
'Last Name' => 'Smith',
'Flying Tour' => ''
),
'3' => Array
(
'Access ID' => 789456,
'Registration Date' => '2018-03-27',
'First Name' => 'Ricky',
'Last Name' => 'Smith',
'Flying Tour' => 'Two way going',
),
'4' => Array
(
'Access ID' => 987654,
'Registration Date' => '2018-04-27',
'First Name' => 'Darron',
'Last Name' => 'Butt',
'Flying Tour' => ''
)
);
echo '<pre>';
$data = array_reverse($data);
$combined = array_map(function($row){
$row = array_map('trim', $row);
unset($row['Flying Tour']);
//print_r($row);exit;
return array_reduce($row, function($v1,$v2){
return $v1 . "|" . $v2;
});
}, $data);
$uniqueElements = array_unique($combined);
$uniqueIndexes = array_keys($uniqueElements);
$newData = [];
foreach ($data as $key => $value) {
if(in_array($key, $uniqueIndexes)){
$newData[] = $value;
}
}
print_r($newData);
?>
答案 5 :(得分：0)
希望这会对你有所帮助。
<?php
$res = Array
(
"0" => Array
(
"Access ID" => 12345,
"Registration Date" => 2018-02-27,
"First Name" => Damian,
"Last Name" => Martin,
"Flying Tour" => "",
),
"1" => Array
(
"Access ID" => 12345,
"Registration Date" => 2018-02-27,
"First Name" => Damian,
"Last Name" => Martin,
"Flying Tour" => Yesgoing,
),
"2" => Array
(
"Access ID" => 789456,
"Registration Date" => 2018-03-27,
"First Name" => Ricky,
"Last Name" => Smith,
"Flying Tour" => "",
),
"3" => Array
(
"Access ID" => 789456,
"Registration Date" => 2018-03-27,
"First Name" => Ricky,
"Last Name" => Smith,
"Flying Tour" => Twowaygoing,
),
"4" => Array
(
"Access ID" => 987654,
"Registration Date" => 2018-04-27,
"First Name" => Darron,
"Last Name" => Butt,
"Flying Tour" => "",
)
);
$arrayvalues = array(); // Set the array before foreach
foreach( $res as $key=>$value ) {
if( isset( $arrayvalues[$value['Access ID']] ) ) { // Here checking the Array value and $value are same
unset( $res[$key] ); // unset the array key value here
}
else $arrayvalues[$value['Access ID']] = $value['Access ID']; // If it is not it will display here and returns true.
}
$i=0;
$testvalues = array(); // Set the array before foreach
foreach ($res as $key => $value) {
print_r($value);
$arr[$i] = $value;
$testvalues[$i]=$arr[$i];
// unset($arr[$key]);
$i++;
}
echo "<pre>";
print_r($testvalues) ; // Get the respective out put here
echo "</pre>";
?>
由于