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#Select / Drop

#Select

Keep only the listed columns with DataFrame::select():

<?php 

data_frame()
    ->read(from_array([['id' => 1, 'name' => 'Norbert', 'email' => 'norbert@example.com']]))
    ->select("id", "name")
    ->write(to_output())
    ->run();

#Drop

Remove the listed columns with DataFrame::drop():

<?php 

data_frame()
    ->read(from_array([['id' => 1, 'name' => 'Norbert', '_tags' => 'internal']]))
    ->drop("_tags")
    ->write(to_output())
    ->run();

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