Strip whitespace from array keys (anywhere in key)

<?php

$my_array = array( 'one 1' => '1', 'two 2' => '2' );
$keys = str_replace( ' ', '', array_keys( $my_array ) );
$results = array_combine( $keys, array_values( $my_array ) );

var_dump( $results );

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Strip whitespace from array keys (anywhere in key)

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