2 ways to convert a two-dimensional array to a one-dimensional array_PHP tutorial

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

Copy code The code is as follows:

$msg = array(
array(
>'id'=> '45',
'name'=>'jack'
),
array(
mary'
　),
array(
) 'id'=>'78',
'name'=>'lili'
),
);

First method:

Copy code The code is as follows:

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

Second method:

Copy code The code is as follows:

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

The result of the above two solutions print_r($names); is:

Copy code The code is 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 result of

print_r($n); is:

Copy code The code is as follows:

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

http://www.bkjia.com/PHPjc/776761.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/776761.htmlTechArticleHow to convert the following two-dimensional array into a one-dimensional array. Copy the code as follows: $msg = array( array( 'id'='45', 'name'='jack' ), array( 'id'='34', 'name'='mary' ), array( 'id'='78',...