Use Array_map to get rid of PHP delete file, delete directory _php instance

Don't say much nonsense, just paste the code. This article embodies the simplicity

Copy the Code code as follows:
<?php

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

Delete directory All files
Array_map (' unlink ', Array_filter (glob (' * '), ' is_file '));

Use Array_map to implement Array_column functionality:

Copy the Code code as follows:
$data = Array (
Array
' A ' = ' a ',
' B ' = ' first B '
),
Array
' A ' = ' second A ',
' B ' = ' second B '
)
);

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

Print_r ($array _column);

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