John Davidson

Message:

I have an array that looks like below:

$var[] =   ^ array:4 [▼

      0 => array:1 [▼

        0 => "apple"

      ]

      1 => array:1 [▼

        0 => "apple"

        1 => "grape"

      ]

      2 => array:1 [▼

        0 => "orange"

      ]

      3 => array:1 [▼

        0 => "banana"

      ]

    ]

Is there a way to convert this array into comma separated list with unique values as below?

$var = "apple,grape,orange,banana"

I tried implode(', ',$var) but it's not working as expected. Any help pls?

Update: My sub-array may have more than 1 element. It's dynamic.

---

My Answer:
array:3 [▼
0 => array:2 [▼
0 => "apple"
1 => "banana"
]
1 => array:2 [▼
0 => "orange"
1 => "apple"
]
2 => array:2 [▼
0 => "banana"
1 => "grapes"
]
]

I want to convert this array of arrays into a comma-separated list with unique values. The expected output should be:

"apple, banana, orange, grapes"