Question

I want to get the js file by PHP CURL, then using regular express to get the value of var pluses, so the output should be /\+/g. Could someone advise what wrong with my code?

Thanks

Here is what I have tried, but no luck:

$url = 'http://cdn.jsdelivr.net/jquery.cookie/1.3/jquery.cookie.js';

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);

preg_match('/^var\spluses\s=\s/', $output, $match);
print_r($match);

Live code: http://phpfiddle.org/main/code/x4w-cn5

Answer 1

To get your match, you need to select it. try

preg_match('/var\spluses\s=\s(.*);/', $output, $match);

The value assigned to pluses should be in $match[1].

The ^ at the beginning of your regex is the start of line delimiter, which limited the selection to a line starting with the characters var, not considering the indentation.

preg_match('/^\s*var\spluses\s=\s(.*);/', $output, $match);

This regex would limit to a line with any (*) whitespaces before the var keyword.