Question

I have a file called config.php, I want it to remain exactly as is, however on Line # 4 there is a line saying:

$config['url'] = '...could be anything here';

I’d like to only replace the contents of line # 4 with my own url provided for $config['ur'], is there a way to do this in PHP?

Answer 1

Since you know the exact line number, probably the most accurate way to do this is to use file(), which returns an array of lines:

$contents = file('config.php');
$contents[3] = '$config[\'url\'] = "whateva"'."\n";
$outfile = fopen('config.php','w');
fwrite($outfile,implode('',$contents));
fclose($outfile);