如何根据指定的给定数组值将数组值转换为逗号分隔的字符串..?
How to convert array values to comma seperated string based on specified given array values..?
我有下面指定的数组
Array
(
[5] => Array
(
[id] => 5
[first_name] => Diyaa
[profile_pic] => profile/user5.png
)
[8] => Array
(
[id] => 8
[first_name] => Raj
[profile_pic] => profile/user8.png
)
[12] => Array
(
[id] => 12
[first_name] => Vanathi
[profile_pic] => profile/user12.png
)
[15] => Array
(
[id] => 15
[first_name] => Giri
[profile_pic] => profile/user15.png
)
[19] => Array
(
[id] => 19
[first_name] => Mahesh
[profile_pic] => profile/user19.png
)
)
我有另一个数组,如下所示
Array
(
[0] => 8
[1] => 15
[2] => 19
)
我想要第一个数组中的first_name
,基于第二个数组值=> 8、15 和 19.
所以我需要 Raj,Giri,Mahesh 作为逗号分隔字符串的输出。
如何获得这个..?
试试这个:
$namesArr = [];
foreach ($wantedIds as $wantedId) {
$namesArr[] = $array[$wantedId]['first_name'];
}
$namesStr = implode(',', $namesArr);
echo $namesStr; // Returns 'Raj,Giri,Mahesh'
我定义 $array
和 $wantedIds
如下:
$array = [
5 => [
'id' => 5,
'first_name' => 'Diyaa',
'profile_pic' => 'profile/user5.png',
],
8 => [
'id' => 8,
'first_name' => 'Raj',
'profile_pic' => 'profile/user8.png',
],
12 => [
'id' => 12,
'first_name' => 'Vanathi',
'profile_pic' => 'profile/user12.png',
],
15 => [
'id' => 15,
'first_name' => 'Giri',
'profile_pic' => 'profile/user15.png',
],
19 => [
'id' => 19,
'first_name' => 'Mahesh',
'profile_pic' => 'profile/user19.png',
],
];
$wantedIds = [8, 15, 19];
试试这个:
$names = [];
foreach ($MainArray as $aIndex => $aPayload) // loop over the key and values of the first array
{
foreach ($searchArray as $b) // loop over your search array (we don't care about the indicies)
{
if ($aIndex == $b) // match up the index of the first array with the values of the second array
{
$names[] = $b['first_name'];// append the name to the return array
break; // since we've found the index break out of the inner loop
}
}
}
此代码适合您:-
$array1 = array_column($array, 'first_name','id');
$array2 = [8,15,19];
$names = array_intersect_key($array1, array_flip($array2));
$names = implode(',',$names);
echo $names;
这里我们使用 array_column
和 array_intersect_key
来获得所需的输出。
$result=array();
$result= array_column($array, "first_name","id");
$result=array_intersect_key ($result, array_flip($values));
echo implode(",",$result);
<?php
$abc = [
['id' => 5, 'firstname' => 'Diyya', 'profile_pic' => 'profile/user5.png'],
['id' => 8, 'firstname' => 'Raj', 'profile_pic' => 'profile/user8.png'],
['id' => 12, 'firstname' => 'Vanathi', 'profile_pic' => 'profile/user12.png']
];
$d = [8, 5, 12];
$output = [];
foreach ($abc as $user) {
if (in_array($user['id'], $d)) {
$output [] = $user['firstname'];
}
}
echo implode(",", $output);
?>
还有其他答案使用 array_intersect_key()
和 array_column()
是明智的,但是,他们以错误的顺序使用它们。应首先过滤数组,以便 array_column()
处理较小的数组。此外,因为您的子数组中已经有代表 id
值的键,所以不需要使用 array_column()
的 index_key
参数。这将是您可以制作的最简单、最直接的一行:
输入:
$array = [
5 => [
'id' => 5,
'first_name' => 'Diyaa',
'profile_pic' => 'profile/user5.png',
],
8 => [
'id' => 8,
'first_name' => 'Raj',
'profile_pic' => 'profile/user8.png',
],
12 => [
'id' => 12,
'first_name' => 'Vanathi',
'profile_pic' => 'profile/user12.png',
],
15 => [
'id' => 15,
'first_name' => 'Giri',
'profile_pic' => 'profile/user15.png',
],
19 => [
'id' => 19,
'first_name' => 'Mahesh',
'profile_pic' => 'profile/user19.png',
],
];
$search_keys=[8, 15, 19];
方法(Demo):
echo implode(',',array_column(array_intersect_key($array,array_flip($search_keys)),'first_name'));
解释:
- 首先从
$search_keys
翻转keys/values
- 然后用
array_intersect_key()
过滤掉不需要的子数组
- 然后使用
array_column()
创建一个包含first_name
个值的新数组
- 然后用逗号将它们粘在一起以创建一个字符串。
输出:
Raj,Giri,Mahesh
...这是未来 SO 读者应该学习和实施的答案。不幸的是,因为它的选票较少并且没有绿色勾号,所以它很可能会被忽略。
:(
我有下面指定的数组
Array
(
[5] => Array
(
[id] => 5
[first_name] => Diyaa
[profile_pic] => profile/user5.png
)
[8] => Array
(
[id] => 8
[first_name] => Raj
[profile_pic] => profile/user8.png
)
[12] => Array
(
[id] => 12
[first_name] => Vanathi
[profile_pic] => profile/user12.png
)
[15] => Array
(
[id] => 15
[first_name] => Giri
[profile_pic] => profile/user15.png
)
[19] => Array
(
[id] => 19
[first_name] => Mahesh
[profile_pic] => profile/user19.png
)
)
我有另一个数组,如下所示
Array
(
[0] => 8
[1] => 15
[2] => 19
)
我想要第一个数组中的first_name
,基于第二个数组值=> 8、15 和 19.
所以我需要 Raj,Giri,Mahesh 作为逗号分隔字符串的输出。
如何获得这个..?
试试这个:
$namesArr = [];
foreach ($wantedIds as $wantedId) {
$namesArr[] = $array[$wantedId]['first_name'];
}
$namesStr = implode(',', $namesArr);
echo $namesStr; // Returns 'Raj,Giri,Mahesh'
我定义 $array
和 $wantedIds
如下:
$array = [
5 => [
'id' => 5,
'first_name' => 'Diyaa',
'profile_pic' => 'profile/user5.png',
],
8 => [
'id' => 8,
'first_name' => 'Raj',
'profile_pic' => 'profile/user8.png',
],
12 => [
'id' => 12,
'first_name' => 'Vanathi',
'profile_pic' => 'profile/user12.png',
],
15 => [
'id' => 15,
'first_name' => 'Giri',
'profile_pic' => 'profile/user15.png',
],
19 => [
'id' => 19,
'first_name' => 'Mahesh',
'profile_pic' => 'profile/user19.png',
],
];
$wantedIds = [8, 15, 19];
试试这个:
$names = [];
foreach ($MainArray as $aIndex => $aPayload) // loop over the key and values of the first array
{
foreach ($searchArray as $b) // loop over your search array (we don't care about the indicies)
{
if ($aIndex == $b) // match up the index of the first array with the values of the second array
{
$names[] = $b['first_name'];// append the name to the return array
break; // since we've found the index break out of the inner loop
}
}
}
此代码适合您:-
$array1 = array_column($array, 'first_name','id');
$array2 = [8,15,19];
$names = array_intersect_key($array1, array_flip($array2));
$names = implode(',',$names);
echo $names;
这里我们使用 array_column
和 array_intersect_key
来获得所需的输出。
$result=array();
$result= array_column($array, "first_name","id");
$result=array_intersect_key ($result, array_flip($values));
echo implode(",",$result);
<?php
$abc = [
['id' => 5, 'firstname' => 'Diyya', 'profile_pic' => 'profile/user5.png'],
['id' => 8, 'firstname' => 'Raj', 'profile_pic' => 'profile/user8.png'],
['id' => 12, 'firstname' => 'Vanathi', 'profile_pic' => 'profile/user12.png']
];
$d = [8, 5, 12];
$output = [];
foreach ($abc as $user) {
if (in_array($user['id'], $d)) {
$output [] = $user['firstname'];
}
}
echo implode(",", $output);
?>
还有其他答案使用 array_intersect_key()
和 array_column()
是明智的,但是,他们以错误的顺序使用它们。应首先过滤数组,以便 array_column()
处理较小的数组。此外,因为您的子数组中已经有代表 id
值的键,所以不需要使用 array_column()
的 index_key
参数。这将是您可以制作的最简单、最直接的一行:
输入:
$array = [
5 => [
'id' => 5,
'first_name' => 'Diyaa',
'profile_pic' => 'profile/user5.png',
],
8 => [
'id' => 8,
'first_name' => 'Raj',
'profile_pic' => 'profile/user8.png',
],
12 => [
'id' => 12,
'first_name' => 'Vanathi',
'profile_pic' => 'profile/user12.png',
],
15 => [
'id' => 15,
'first_name' => 'Giri',
'profile_pic' => 'profile/user15.png',
],
19 => [
'id' => 19,
'first_name' => 'Mahesh',
'profile_pic' => 'profile/user19.png',
],
];
$search_keys=[8, 15, 19];
方法(Demo):
echo implode(',',array_column(array_intersect_key($array,array_flip($search_keys)),'first_name'));
解释:
- 首先从
$search_keys
翻转keys/values
- 然后用
array_intersect_key()
过滤掉不需要的子数组 - 然后使用
array_column()
创建一个包含first_name
个值的新数组 - 然后用逗号将它们粘在一起以创建一个字符串。
输出:
Raj,Giri,Mahesh
...这是未来 SO 读者应该学习和实施的答案。不幸的是,因为它的选票较少并且没有绿色勾号,所以它很可能会被忽略。
:(