Use array_map simple to handle php delete file, delete directory _php instance

Do not say much nonsense, directly affixed to the code. This article embodies the simplicity

Copy Code code as follows:

<?php

Delete all empty directories under the directory
Array_map (' RmDir ', glob (' * ', glob_onlydir));

Delete all files in a directory
Array_map (' unlink ', Array_filter (glob (' * '), ' is_file '));

Use Array_map to implement Array_column features:

Copy Code code as follows:

$data = Array (
Array
' A ' => ' a ',
' B ' => '
),
Array
' A ' => ' second a ',
' B ' => ' second B '
)
);

$array _column = Array_map (function ($element) {
return $element [' a '];
}, $data);

Print_r ($array _column);