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A typical task when working with CSV files is to find and process duplicates, very often to delete them. I have the following python function that exports JSON data to CSV file, it works fine - the keys(csv headers) and values(csv rows) are populated in the CSV, but I'm trying to remove the CSV (Comma-Separated Values) files are ubiquitous in data processing, but they often suffer from duplicate rows—whether due to data entry errors, merging datasets, or scraping This code uses fgetcsv() and uses a space comma as your column-delimiter (based on the sample-data in your question comment). So the data above would turn into: Remove duplicates rows from large csv with multiline fields Asked 4 years, 2 months ago Modified 4 years, 1 month ago Viewed 2k times Remove duplicates rows from large csv with multiline fields Asked 4 years, 2 months ago Modified 4 years, 1 month ago Viewed 2k times Remove duplicate rows from CSV, Excel, or Google Sheets. 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