Using PHP fputs() to Write Data to Files

In PHP, the fputs() function is used to write data to a file. Its syntax is:

fputs ( resource $handle , string $string [, int $length ] ) : int|bool

Parameter Description:

$handle : the file resource handle, typically obtained via fopen().

$string : the string to be written.

$length (optional): the maximum number of bytes to write; defaults to the length of $string.

Return Value:

On success, the number of bytes written is returned; otherwise false is returned.

Example code:

<?php
$file = fopen("demo.txt", "w");
if ($file) {
    $content = "Hello, World!";
    $length = fputs($file, $content);
    if ($length !== false) {
        echo "Write successful, wrote " . $length . " bytes.";
    } else {
        echo "Write failed.";
    }
    fclose($file);
}
?>

The example opens a file named demo.txt in write mode, writes the string "Hello, World!" using fputs(), checks whether the write succeeded, outputs the result, and finally closes the file with fclose() to release the resource.

Note that when using fputs(), the file must be opened in a writable mode (e.g., with fopen() in "w" mode). After writing, always close the file handle with fclose() to ensure proper resource cleanup.

Summary

The fputs() function in PHP provides a straightforward way to write strings to files; proper use requires opening the file with a writable mode and closing the handle after the operation to maintain correctness.