Sometimes, we want to remove duplicate values from a multi-dimensional array in PHP.
In this article, we’ll look at how to remove duplicate values from a multi-dimensional array in PHP.
How to remove duplicate values from a multi-dimensional array in PHP?
To remove duplicate values from a multi-dimensional array in PHP, we can use the array_unique and array_map functions.
For instance, we write
$input = array_map("unserialize", array_unique(array_map("serialize", $input)));
to write
array_map("serialize", $input)
to map the $input entries to values that can be compared directly.
Then we call array_unique to remove the duplicates.
Next, we call array_map again with 'unserialize' to map the unique values back to their original values.
Conclusion
To remove duplicate values from a multi-dimensional array in PHP, we can use the array_unique and array_map functions.
