string function workout in php -


I have such a string, 

  $ inp1 = "3 in quantity [0,0], 1-2 and 6 months [6,1] [3,2]) ";

In this internally, going to take the values ​​of square bracket. How can I take this class in the square category?

[0,0] [6,1] [3,2]

Thanks in advance for this help. 

  preg_match_all ('/ \ [\ d +, \ d + \] /', $ Inp1, $ matches); $ Result = implode ('', $ matches [0]);

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