php - how can json_encode() not auto convert string to int -

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so have array,

array  (     [0] => array (           [task] => sleeping           [duration] => 2      )     [1] => array (           [task] => eating           [duration] => 1     )  )

when json_encode() it, returns

 [{"task":"sleeping","duration":2},{"task":"eating","duration":1}]

i need be

 [{"task":"sleeping","duration":"2"},{"task":"eating","duration":"1"}]

is there way how?

the dump shows variable inside array int in first place cast string before pushing inside array


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