Parse error in PHP array -

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    $labels = (         'steam' => 'steam',         'bore_water' => 'bore water',         'boiler1oil' => 'boiler 1 oil',     );

parse error: syntax error, unexpected t_double_arrow on line 32: 'steam' => 'steam',

can spot issue this? 

$labels = array(     'steam' => 'steam',     'bore_water' => 'bore water',     'boiler1oil' => 'boiler 1 oil', );

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