How to Efficiently Remove Duplicate Entries from Multidimensional Arrays in PHP?

Effective Approach for Removing Duplicate Values from Multi-Dimensional Arrays in PHP

Duplicating entries in multi-dimensional arrays can be problematic, hindering efficient data processing. To address this challenge, a robust solution is presented that thoroughly removes duplicate values.

Consider the following example array:

$array = [
    [0] => ['abc', 'def'],
    [1] => ['ghi', 'jkl'],
    [2] => ['mno', 'pql'],
    [3] => ['abc', 'def'],
    [4] => ['ghi', 'jkl'],
    [5] => ['mno', 'pql'],
];

To effectively remove duplicate values, the following technique can be employed:

$input = array_map("unserialize", array_unique(array_map("serialize", $input)));

This approach employs a combination of serialization and unserialization. By converting the arrays into strings and then back into arrays, the unique values are retained while discarding duplicates.

By utilizing this method, the resulting array will be free of repetitive elements, ensuring data integrity and facilitating seamless data processing.

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