2 methods of converting two-dimensional arrays into one-dimensional arrays _php tips

How to convert the following two-dimensional array into a one-dimensional array.

Copy Code code as follows:

$msg = Array (
Array
' id ' => ' 45 ',
' Name ' => ' Jack '
),
Array
' id ' => ' 34 ',
' Name ' => ' Mary '
),
Array
' ID ' => ' 78 ',
' Name ' => ' Lili '
),
);

The first method:

Copy Code code as follows:

foreach ($msg as $k => $v) {
$ids [] = $id;
$names [] = $name;
}

The second method:

Copy Code code as follows:

$ids = Array_column ($msg, ' id ');
$names = Array_column ($msg, ' name ');

The above two solutions are Print_r ($names), and the following results are:

Copy Code code as follows:

Array (
[0]=>jack
[1]=>mary
[2]=>lili
)

Note: Array_column () can have a third parameter, such as $n = Array_column ($msg, ' name ', ' id ');

The results of Print_r ($n) are:

Copy Code code as follows:

Array (
[45]=>jack
[34]=>mary
[78]=>lili
)