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<?php $array = [ 'Mary', 'Mary had a little', 'a lamb', 'Mary mary mary', 'lady' ]; var_export( array_count_values( explode(' ', strtolower( implode(' ', $array) ) ) ) );
Output for git.master, git.master_jit, rfc.property-hooks
array ( 'mary' => 5, 'had' => 1, 'a' => 2, 'little' => 1, 'lamb' => 1, 'lady' => 1, )

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