In PHP, how can the explode() function be used to split strings into arrays, and what are some common use cases for this function in file processing?

To split strings into arrays in PHP, you can use the explode() function. This function takes a delimiter and a string as input, and then splits the string into an array based on the delimiter. Common use cases for explode() in file processing include splitting lines of a CSV file into an array of values, extracting data from text files based on specific separators, and parsing URLs to extract different components.

// Example of using explode() to split a string into an array
$string = "apple,banana,orange";
$array = explode(",", $string);

print_r($array);