How to Flatten Multidimensional Arrays into One-Dimensional Arrays in PHP?

Converting Multidimensional Arrays to One-Dimensional Arrays: A PHP Solution

In PHP, encountering arrays containing single-element arrays can pose a conversion challenge when aiming to obtain a one-dimensional equivalent. To address this scenario, let's explore how to efficiently flatten such arrays using built-in PHP functionality.

1. array_map('current', $array):

For arrays with single-element subarrays, the array_map() function comes in handy. By applying the current() callback, it extracts the first element from each subarray, returning a one-dimensional array.

$array = [[88868], [88867], [88869], [88870]];
$oneDimensionalArray = array_map('current', $array);

2. call_user_func_array('array_merge', $array):

When dealing with subarrays that have multiple entries, using call_user_func_array() with array_merge() provides a more generalized solution. This method effectively concatenates all subarrays into a single array.

$oneDimensionalArray = call_user_func_array('array_merge', $array);

Usage and Benefits:

These functions offer optimized solutions for converting multidimensional arrays into one-dimensional counterparts. They facilitate seamless data manipulation, allowing developers to simplify their code and improve readability.

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