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<?
if (in_array('12.4', $a) {
  //action
}



/*
*/


/*
*/
if (in_array('12.4', $a) {
  //action
}



/*
*/
$input = array("a" => "green", "red", "b" => "green", "blue", "red");
$result = array_unique($input);
print_r($result);

?>