The method to retrieve values from a text file using PHP is as follows:
- Use the fopen function to open the text file in read mode.
- Use the fgets function to read each line of the text file.
- Use the explode function to split each line into an array of values based on a delimiter (e.g. comma or semicolon).
- Process each array of values as needed (e.g. store in a database or output to a webpage).
- When all lines have been processed, use the fclose function to close the text file.