Вы можете попробовать это. Он работает:
if (preg_match('%^\S*?/videosite\.com/(\w+)(?!\S+)$%i', $subject, $regs)) {
#$result = $regs[0];
}
Но я уверен, что после того, как я этот пост, вы будете обновлять свой вопрос :)
Объяснение:
"
^ # Assert position at the beginning of the string
\S # Match a single character that is a “non-whitespace character”
*? # Between zero and unlimited times, as few times as possible, expanding as needed (lazy)
\/ # Match the character “/” literally
videosite # Match the characters “videosite” literally
\. # Match the character “.” literally
com # Match the characters “com” literally
\/ # Match the character “/” literally
( # Match the regular expression below and capture its match into backreference number 1
\w # Match a single character that is a “word character” (letters, digits, etc.)
+ # Between one and unlimited times, as many times as possible, giving back as needed (greedy)
)
(?! # Assert that it is impossible to match the regex below starting at this position (negative lookahead)
\S # Match a single character that is a “non-whitespace character”
+ # Between one and unlimited times, as many times as possible, giving back as needed (greedy)
)
\$ # Assert position at the end of the string (or before the line break at the end of the string, if any)
"
в соответствии с вопросом ур, если он соответствует reg exp, он ничего не должен показывать, и вы делаете все наоборот. Распечатайте, если в начале и конце есть пробел. :) – mithunsatheesh