This article explains how to use PHP’s array_combine() function to merge two arrays into a single associative array, complete with examples and practical use cases.

Why does array_combine return false in PHP sometimes? Possible reasons

1. array_combine Basic usage array_combine receives two arrays as parameters, the first array as key, and the second array as value. If the two arrays have different lengths, Warning is thrown and false is returned.

Basic usage examples Suppose we have two arrays, one is the student name and the other is the corresponding grades, and we want to combine them into an associative array of "name => grades":