How Can I Efficiently Merge Two PHP Arrays into Key-Value Pairs?

Merging Arrays as Key-Value Pairs in PHP: A Simple Technique

When working with arrays in PHP, it often becomes necessary to merge two arrays while establishing a key-value relationship between the elements. While manual looping is a viable approach, let's explore a more efficient method.

Solution: array_combine()

PHP provides a built-in function, array_combine(), specifically designed for this purpose. This function takes two arrays as arguments:

• The first array contains the keys for the resulting array.
• The second array contains the values for the resulting array.

array_combine() merges the two arrays, creating a new array where the elements from the first array are used as keys, and the corresponding elements from the second array are assigned as values.

Example:

Consider the following arrays:

$keys = ['name', 'age', 'gender'];
$values = ['John', 25, 'Male'];

To merge these arrays using array_combine():

$key_value_pairs = array_combine($keys, $values);

The resulting array, $key_value_pairs, will look like this:

['name' => 'John', 'age' => 25, 'gender' => 'Male']

As you can see, the keys from the first array ($keys) have been mapped to the values from the second array ($values). This provides a quick and concise way to establish key-value relationships between the elements of two arrays.

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