I am trying to use preg_split as below:
$tarea = "13.3R4.2";
$keywords = preg_split("/[0-9]*.[0-9][a-zA-Z]/", $tarea);
I am unable to capture the array  value. Below is the output:
Array (  =>  => 4.2 )
I want to capture both the indexes of the array. I am not sure what mistake I am doing here. Kindly help!!
The output I expect is:
Array (  => 13.3R => 4.2 )