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<?php $input = array( 'abc' => 0, 'foo-bcd' => 1, 'foo-def' => 1, 'foo-xyz' => 0, ); $filtered = array_filter($input, function ($key) { return strpos($key, 'foo-') === 0; }, ARRAY_FILTER_USE_KEY); print_r($filtered);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [foo-bcd] => 1 [foo-def] => 1 [foo-xyz] => 0 )

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