Questions:
I tested inline anonymous function with array_map here
and it worked but when I tried same with $user_meta it is not working.
$user_meta = Array ( [interest] => Array ( [0] => Array ) [type] =>
Array ( [0] => Array ) [user_status] => Array ( [0] => deny)
[firstname] => Array ( [0] => ) [lastname] => Array ( [0] => B )
[email] => [email protected] )
$user_meta = array_map(function($a) { return $a[0]; },$user_meta);
“Parse error: syntax error, unexpected T_FUNCTION, expecting ‘)’ in”
here is the test link showing error
How to&Answers:
I hope this will help:
$user_meta = array_map(function ($a) { return $a[0]; }, $user_meta);
Answer：
There’s nothing wrong with the array_map line, but everything before it is wrong. That is the output of a print_r not PHP code. Compare how you define the array in the two links you posted.
Answer：
That’s not an answer to your question, but since you want to return the first key of each sub-array, you can just use array_column.
$user_meta = array_column($user_meta, 0);
