删除数组中具有相同值的项目

Question

See my following array, i need to be able to remove the items that have the same values (e.g. Primary, Secondary etc.) Is there a way of doing this to the existing array via php or is it easier to do this before items are inserted into the array?

I've seen the array_unique function but not sure if I can use this seen as it's a multi dimensional array?

Array
(
    [0] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 19
            [value] => Primary
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 0
            [usageCount] => 
        )

    [1] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 20
            [value] => Secondary
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 1
            [usageCount] => 
        )

    [2] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 20
            [value] => Secondary
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 1
            [usageCount] => 
        )

    [3] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 21
            [value] => Groups & Families
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 2
            [usageCount] => 
        )

    [4] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 19
            [value] => Primary
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 0
            [usageCount] => 
        )

    [5] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 20
            [value] => Secondary
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 1
            [usageCount] => 
        )

    [6] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 21
            [value] => Groups & Families
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 2
            [usageCount] => 
        )

    [7] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 22
            [value] => Adults
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 3
            [usageCount] => 
        )

    [8] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 19
            [value] => Primary
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 0
            [usageCount] => 
        )

    [9] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 20
            [value] => Secondary
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 1
            [usageCount] => 
        )

    [10] => SelectAttributeTypeOption Object
        (
            [error] => 
            [ID] => 21
            [value] => Groups & Families
            [th] => TextHelper Object
                (
                )

            [displayOrder] => 2
            [usageCount] => 
        )
)

Answer 1

Take a look at array_filter function:

array_filter( $array, function( $elem ) use ( $value ) {   
  return $elem['value'] !== $value; 
});

Hope it helps.