$array(类似于这个数组)

Array ( [0] => Array ( [id] => 3 [name]=>'aaa') [1] => Array ( [id] => 4 [name]=>'bbb') [2] => Array ( [id] => 13 [name]=>'ccc') );

方法1

$ids = array();

$ids = array_map('array_shift', $array);

方法2(php>=5.5)

$ids = array();

$ids = array_column($array, 'id');

方法3

$names = array();

$names = array_reduce($array, create_function('$v,$w', '$v[$w["id"]]=$w["name"];return $v;'));