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<?php $array = [2=>['call'=>true, 'id'=>1],5=>['call'=>false, 'id'=>0]]; $ids = array_keys(array_filter(array_column($array, 'call', 'id'))); var_dump($ids);
Output for git.master_jit, git.master, rfc.property-hooks
array(1) { [0]=> int(1) }

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