CSV combiner/builder

PHP Script run in linux environment, it builds CSV files with these conditions: 3 Types of files exist: A. A folder of keyword csv files(may be more than 1 keyword file) /keywords/[login to view URL] .. /keywords/[login to view URL] B. domain txt file /setup/[login to view URL] C. random words file /setup/[login to view URL] File Specs: A. [login to view URL] file may contain anywhere from 100-100,000+ rows of data B. [login to view URL] file may contain 10,000+ rows C. [login to view URL] file contains 50,000+ rows What's contained in these files: A. [login to view URL] file format: keyword phrase,URL keyword phrase2,url2 keyword phrase3,url3 B. [login to view URL] file format: [login to view URL] [login to view URL] [login to view URL] C. [login to view URL] file foramt: randomword1 randomword2 randomword3 ****************************************** What I need the script to do: Put all these information in CSV files with these parameters - 1. Create CSV files with the RANDOM WoRDS file & DOMAIN in the file NAME like so: [login to view URL] [login to view URL] [login to view URL] 2. Within each [login to view URL] file, contains randomly anywhere between 200-300 rows of data pulled sequentially from the keyword file. So if the keyword file contains 3,000 keywords, the script may create 10 files like so: Filename 1: [login to view URL] File 1 Content: keywordphrase1,url1 .. .. keywordphrase300,url300 .. .. Filename 10: [login to view URL] File 10 Content: keywordphrase2700,url2700 .. .. keywordphrase3000,url3000 3. In the [login to view URL] file, each subdomain maybe only used to name 50 CSV files max. For example: /generatedfiles/[login to view URL] .. /generatedfiles/[login to view URL] I should also have the option to ignore the [login to view URL] file, so the generated files may look like this: /generatedfiles/[login to view URL] .. /generatedfiles/[login to view URL] *************************************************** So before: /keywords/[login to view URL] .. /keywords/[login to view URL] /setup/[login to view URL] /setup/[login to view URL] /generatedfiles/ [login to view URL] and After: /keywords/[login to view URL] .. /keywords/[login to view URL] /setup/[login to view URL] /setup/[login to view URL] /generatedfiles/[login to view URL] .. /generatedfiles/[login to view URL] [login to view URL] or After: /keywords/[login to view URL] .. /keywords/[login to view URL] /setup/[login to view URL] /setup/[login to view URL] /generatedfiles/[login to view URL] .. /generatedfiles/[login to view URL] [login to view URL] Uploaded is just the structure of how I'd like it to be, you can create more than one php script if you like.