In PHP, how do I deep copy arrays with examples?

In PHP, deep copying of arrays can be achieved using various methods. A deep copy means that you are not only copying the array itself but also all nested arrays or objects. Here are some methods for deep copying arrays in PHP:

Methods to Deep Copy Arrays in PHP

Using `serialize()` and `unserialize()`

This method converts the array to a string and then back to an array, creating a deep copy.


        $array1 = ['a' => 'apple', 'b' => ['c' => 'cherry']];
        $array2 = unserialize(serialize($array1));

Using `array_map()` for nested arrays

You can use `array_map()` on the elements of the array to create a deep copy.


        function deepCopyArray($array) {
            return array_map(function ($item) {
                return is_array($item) ? deepCopyArray($item) : $item;
            }, $array);
        }

        $array1 = ['a' => 'apple', 'b' => ['c' => 'cherry']];
        $array2 = deepCopyArray($array1);

Using a loop

You can manually loop through the array to create a deep copy.


        function deepCopy($array) {
            $copy = [];
            foreach ($array as $key => $value) {
                $copy[$key] = is_array($value) ? deepCopy($value) : $value;
            }
            return $copy;
        }

        $array1 = ['a' => 'apple', 'b' => ['c' => 'cherry']];
        $array2 = deepCopy($array1);

In PHP, how do I deep copy arrays with examples?

Methods to Deep Copy Arrays in PHP

Using `serialize()` and `unserialize()`

Using `array_map()` for nested arrays

Using a loop

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In PHP, how do I deep copy arrays with examples?

Methods to Deep Copy Arrays in PHP

Using `serialize()` and `unserialize()`

Using `array_map()` for nested arrays

Using a loop

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Popular Topics

Recent Languages