Ill touch on each of those details as we go. The array is created as a sequential chunk of memory where each value is stored right next to the other. You can iterate over the array or access individual items using an index. Add empty strings to ensure arrays $a and $b have same number of elements An array is a data structure that serves as a collection of multiple items. how many fields are we missing at the end of the second array? $a is the array of header columns and $b is an array of the current row retrieved with fgetcsv() This function based on quecoder at gmail's combine_arr() below allowed me to pad either array or not when parsing my CSVs to arrays. Then I ran into a problem when you have empty columns at the end of a row because array_combine returns false if both arrays don't have the same number of elements. I needed to read CSV files into associative arrays with column headers as keys. If an array key exists in both arrays, then the element from the first array will be used and the matching keys element from the second array will be ignored. I needed a function that would take keys from one unequal array and combine them with the values of another.
#PROCESS 3 ARRAYS TOGETHER PHP ARCHIVE#
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