How can i compare the headings in an excel file to a list of headings that I code in PHP ?

Question

I want to compare the headings of each column from the excel file to a pre determined list of the headings that I will provide in the PHP. So for example i want to see if heading of Column A in the excel file is "Hello" then does this come into So Sci as "Hello" or "104 101 108 108 111". I want to see whether all headings of the excel columns are the same as what I want otherwise I want an error to be shown to the user uploading the file, saying that the headings are not correct please fix them.
Please let me know if anything is unclear

Comments

Yes, anything is unclear :) Let's start with the basics. Where does the excel file come from? Are we talking about a file upload in the questionnaire by the respondent?

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Your answer : Yes exactly. The respondent will upload a Microsoft Excel file and this will be done via the "upload" type question.

Further details : I want to see if the headings in the excel file match the headings that I specify in the PHP code when checking the excel file headings.