How to convert array to comma separate

Keywords´╝Ü php arrays string

Question: 

I have this Array need to convert to comma separated

Please help me out

Thanks

Array
(
    [0] => Array
        (
            [image] => imagehUcx5.jpeg
        )

    [1] => Array
        (
            [image] => d-group.jpg
        )

    [2] => Array
        (
            [image] => IMG_20190506_095530.jpg
        )

    [3] => Array
        (
            [image] => IMG_20190321_144234.jpg
        )

)

How to convert it to

["imagehUcx5.jpeg","d-group.jpg","IMG_20190506_095530.jpg","IMG_20190321_144234.jpg"]

Answers: