edit string in a .htaccess

[andz]

Hi

 

Is there a way to edit a a string in a textfile? For now, I only have the codes to write to a file. I also want to be able to edit the content of the .htaccess let say i will comment something like commenting the RewriteRule string. Is that possible?

 

The code below only works in appending ErrorDocument string on the existing .htaccess.

 

$htaccess = file_get_contents('.htaccess');

if (!preg_match('/^ErrorDocument 404 /', $htaccess, $matches)) {

 

# create htaccess file

$fp = fopen('.htaccess', 'a');

if ($fp) {

$str = 'ErrorDocument 404 '.$url;

fwrite($fp, $str);

}

fclose($fp);

 

}

[AbraCadaver]

Read the file into a string with file_get_contents(), make changes to the string and then write it back out with file_put_contents().