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<?php $result = 'get_array_log'; echo preg_replace_callback( '#(^|_)([a-z])#', function( array $matches ) { print_r( $matches ); exit; return ''; }, $result );
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => g [1] => [2] => g )

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