preg_match_all for backslash [\] & [u002F]

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I have a URL:

https:\u002F\u002Fsite.vid.com\u002F93836af7-f465-4d2c-9feb-9d8128827d85\u002F6njx6dp3gi.m3u8?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJjb3VudHJ5IjoiSU4iLCJkZXZpY2VfaWQiOiI1NjYxZTY3Zi0yYWE3LTQ1MjUtOGYwYy01ODkwNGQyMjc3ZmYiLCJleHAiOjE2MTA3MjgzNjEsInBsYXRmb3JtIjoiV0VCIiwidXNlcl9pZCI6MH0.c3Xhi58DnxBhy-_I5yC2XMGSWU3UUkz5YgeVL1buHYc","

And I want to match it using preg_match_all. My regex expression is:

preg_match_all('/(https:\/\/site\.vid\.com\/.*\",")/', $input_lines, $output_array);

But I am not able to match special character \ & u002F in above code. I tried using (escaping fuction). But it is not matching. I know it maybe a lame question, but if anyone could help me in matching \ and u002F or in escaping \ and u002F in preg_match_all, that would be helpfull.

Question Edit:

I want to use only preg_match_all because I am trying to extract above URL from a html page.

php regex
1 Answers

You may use

preg_match_all('~https:(?://|(?:\\\\u002F){2})site\.vid\.com(?:/|\\\\u002F)[^"]*~', $string)

See the regex demo. Details:

  • https: - a literal string (if s is optional, use https?:)
  • (?://|(?:\\u002F){2}) - a non-capturing group matching either // or (|) two occurrences of \u002F
  • site\.vid\.com - a literal site.vid.com string (the dot is a metacharacter that matches any char but line break chars, so it must be escaped)
  • (?:/|\\u002F) - a non-capturing group matching / or \u002F text
  • [^"]* - a negated character class matching zero or more chars other than ".

See the PHP demo:

$re = '~https:(?://|(?:\\\\u002F){2})site\.vid\.com(?:/|\\\\u002F)[^"]*~';
$str = 'https:\\u002F\\u002Fsite.vid.com\\u002F93836af7-f465-4d2c-9feb-9d8128827d85\\u002F6njx6dp3gi.m3u8?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJjb3VudHJ5IjoiSU4iLCJkZXZpY2VfaWQiOiI1NjYxZTY3Zi0yYWE3LTQ1MjUtOGYwYy01ODkwNGQyMjc3ZmYiLCJleHAiOjE2MTA3MjgzNjEsInBsYXRmb3JtIjoiV0VCIiwidXNlcl9pZCI6MH0.c3Xhi58DnxBhy-_I5yC2XMGSWU3UUkz5YgeVL1buHYc","';

preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
print_r($matches[0]);
// => Array( [0] => https:\u002F\u002Fsite.vid.com\u002F93836af7-f465-4d2c-9feb-9d8128827d85\u002F6njx6dp3gi.m3u8?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJjb3VudHJ5IjoiSU4iLCJkZXZpY2VfaWQiOiI1NjYxZTY3Zi0yYWE3LTQ1MjUtOGYwYy01ODkwNGQyMjc3ZmYiLCJleHAiOjE2MTA3MjgzNjEsInBsYXRmb3JtIjoiV0VCIiwidXNlcl9pZCI6MH0.c3Xhi58DnxBhy-_I5yC2XMGSWU3UUkz5YgeVL1buHYc )
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