Quick implementation: 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.

$msg = array(

array(

　'id'=>'45',

　'name'=>'jack'

　),

array(

　'id'=>'34',

　'name'=>'mary'

　),

array(

　'id'=>'78',

　'name'=>'lili'

　),

);

1 Solution: foreach($msg as $k => $v){

　$ids[] = $id;

　$names[] = $name;

　}

2 solution: $ids = array_column($msg, 'id');

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

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

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:

Array(

　[45]=>jack

　[34]=>mary

　[78]=>lili

)

Reference: array array_column ( array $array , mixed $column_key [, mixed $index_key = null ] )

http://www.bkjia.com/PHPjc/776510.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/776510.htmlTechArticleHow to convert the following two-dimensional array into a one-dimensional array. $msg = array( array( 'id'='45', 'name'='jack' ), array( 'id'='34', 'name'='mary' ), array( 'id'=' 78', 'name'='lili' ), ); Solution 1:...