Today I was working on a personal project and wanted to be able to use a native PHP function to re-index a 2D array so that the key for each sub-array was pulled from a value in that sub-array. Unfortunately I wasn’t able to find a way to simply do it natively although it may exist. Therefore I wrote this array_by_column() function:
To use it you can simply supply the 2D array as the first argument and the key (or column name) as the second parameter.
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