Php 如何检查多维数组中的数组键?
如何检查数组中是否存在数组键 我需要检查数组中是否存在用户id,我在下面找到了数组Php 如何检查多维数组中的数组键?,php,arrays,multidimensional-array,Php,Arrays,Multidimensional Array,如何检查数组中是否存在数组键 我需要检查数组中是否存在用户id,我在下面找到了数组 Array ( [0] => Array ( [user_id] => 1482309797 [week] => 1 [type] => 1 [commission] => 4000 ) [1] => Array ( [user_id] => 14823097
Array
(
[0] => Array
(
[user_id] => 1482309797
[week] => 1
[type] => 1
[commission] => 4000
)
[1] => Array
(
[user_id] => 1482309797
[week] => 1
[type] => 1
[commission] => 0
)
[2] => Array
(
[user_id] => 1482309797
[week] => 1
[type] => 1
[commission] => 4000
)
[3] => Array
(
[user_id] => 1482309797
[week] => 1
[type] => 1
[commission] => 0
)
[4] => Array
(
[user_id] => 1483096072
[week] => 1
[type] => 1
[commission] => 4000
)
[5] => Array
(
[user_id] => 1483333245
[week] => 1
[type] => 1
[commission] => 2000
)
)
我想检查用户id是否存在,我已经尝试了下面的代码
foreach ($com_array as $report) {
$user_id=$report['user_id'];
if(array_key_exists($user_id,$output_array)){
echo "Eid found";
}else{
echo "id not found";
}
}
任何人请帮助。多维数组没有内置函数。你可以做一个像:
function findKey($array, $keySearch)
{
foreach ($array as $key => $item) {
if ($key == $keySearch) {
echo 'yes, it exists';
return true;
}
else {
if (is_array($item) && findKey($item, $keySearch)) {
return true;
}
}
}
return false;
}
像这样试试
foreach ($com_array as $key=>$value) {
if(array_key_exists("user_id",$value)){
echo "id found";
}else{
echo "id not found";
}
}
如果您只想检查是否存在密钥,则可以执行此操作
$user_id_arr = array_column($output_array, 'user_id'); // Get your user_id to a single dimension array
foreach ($com_array as $report) {
if ( in_array($report['user_id'], $user_id_arr) ){
echo "ID Found";
} else {
echo "ID Not Found";
}
}
谢谢
foreach ($com_array as $report) {
if(isset($report['user_id'])){
echo "Eid found";
}else{
echo "id not found";
}
}
尝试上面的代码,您将得到输出