如何从php多维数组中获取每一列数据?
如何将php中的每一列数据多维化到单列数组中如何从php多维数组中获取每一列数据?,php,arrays,cakephp,Php,Arrays,Cakephp,如何将php中的每一列数据多维化到单列数组中 like $_test = = array( array( 'id' => 1001, 'first_name' => 'kalpesh', 'last_name' => 'gamit', ), array( 'id' => 1002, 'first_name' => 'kartik', 'last_n
like $_test = = array(
array(
'id' => 1001,
'first_name' => 'kalpesh',
'last_name' => 'gamit',
),
array(
'id' => 1002,
'first_name' => 'kartik',
'last_name' => 'patel',
),
array(
'id' => 2002,
'first_name' => 'smith',
'last_name' => 'Jones',
),
array(
'id' => 4004,
'first_name' => 'patel',
'last_name' => 'Doe',
)
);
只需要id或first_name这样的结果,而不使用while、foreach等循环
Array
(
[0] => 1001
[1] => 1002
[2] => 2002
[3] => 4004
)
您可以使用:
$id_list = array_map(function($var) {
return $var['id'];
}, $_test);
请像下面这样更新您的脚本并检查它,但它只能在比仅版本大的PHP 5.5中工作
$_test = = array(
array(
'id' => 1001,
'first_name' => 'kalpesh',
'last_name' => 'gamit',
),
array(
'id' => 1002,
'first_name' => 'kartik',
'last_name' => 'patel',
),
array(
'id' => 2002,
'first_name' => 'smith',
'last_name' => 'Jones',
),
array(
'id' => 4004,
'first_name' => 'patel',
'last_name' => 'Doe',
)
);
$ids_only = array_column($records, 'id');
print_r($ids_only);
ID的结果
Array
(
[0] => 1001
[1] => 1002
[2] => 2002
[3] => 4004
)
第一个名称的结果
$first_name = array_column($records, 'id');
print_r($first_name);
Array
(
[0] => Kalpesh
[1] => kartik
[2] => smith
[3] => patel
)
运行上面的php脚本,请检查