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<?php $something = array( 'value1', 'value2' ); $somethingElse = array( 'value2', 'value3' ); var_dump( array_values( array_keys($something) + array_keys($somethingElse) ) );
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> int(0) [1]=> int(1) }

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