What is the best approach to read a text file line by line, store the data in an array, and then write the array back to a text file in PHP?

To read a text file line by line, store the data in an array, and then write the array back to a text file in PHP, you can use a combination of file functions like `file_get_contents()`, `explode()`, and `file_put_contents()`. First, read the file using `file_get_contents()` to get the contents as a string, then use `explode()` to split the string into an array of lines. After processing the data, use `file_put_contents()` to write the array back to a text file. 

<?php
// Read the contents of the text file into a string
$fileContents = file_get_contents('input.txt');

// Split the string into an array of lines
$lines = explode("\n", $fileContents);

// Process the data as needed, for example, storing it in an array

// Write the array back to a text file
file_put_contents('output.txt', implode("\n", $lines));
?>

Keywords

file handling fopen fgets fwrite arrays

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