How to Write Data to the Beginning of a File in PHP?

Writing to the Beginning of a File in PHP

Writing data to a file's beginning can be slightly tricky in PHP. The "a" mode (append) only allows you to add content to the end of a file. "r " mode, while allowing read and write access, overwrites existing data.

In your case, you've used "r " which has this behavior:

$datab = fopen('database.txt', "r+");

Solution: Using File Operations

Here's a quick and efficient solution:

1. Read the existing contents of the file:

   $current_data = file_get_contents('database.txt');

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2. Concatenate the new data with the existing data:

   $new_data = "Your new data\n" . $current_data;

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3. Rewrite the entire file with the new data:

   file_put_contents('database.txt', $new_data);

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This technique ensures that your new data is written at the beginning of the file, while preserving the previous contents.

Here's a code snippet that demonstrates this solution:

<?php
$new_data = "Your new data\n";
$current_data = file_get_contents('database.txt');
$new_data .= $current_data;
file_put_contents('database.txt', $new_data);
?>

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