Question

The following code supposed to add at the beginning of my php files on the webserver the string abcdef.

However it replaces all the content with the abcdef. How can I correct it?

Also how can I add something on the end instead of the beginning?

foreach (glob("*.php") as $file) {

   $fh = fopen($file, 'c'); //Open file for writing, place pointer at start of file.
   fwrite($fh, 'abcdef');
   fclose($fh);

}

Answer 1

You just need to open the file with a flag that allows you to write without truncating the file to zero length:

$fh = fopen($file, 'r+');