How can I overwrite file contents with new content in PHP?

Question

I tried to use fopen, but I only managed to append content to end of file. Is it possible to overwrite all contents with new content in PHP?

Answer 1

$fname = "database.php";
$fhandle = fopen($fname,"r");
$content = fread($fhandle,filesize($fname));
$content = str_replace("192.168.1.198", "localhost", $content);

$fhandle = fopen($fname,"w");
fwrite($fhandle,$content);
fclose($fhandle);