php - RegEx - Match all URLs in string, excluding ones in <iframe> tag? -


i'm using mediaembed (https://github.com/dereuromark/mediaembed) convert media urls in string respective embed code, it's catching media urls within iframes (already embedded).

the expression i'm using match links is:

"~[[:alpha:]]+://[^<>[:space:]]+[[:alnum:]/]~"

what need changed in order not match if url within iframe?

solution code:

'/(?<!=")(\b[\w]+:\/\/[\w-?&;#~=\.\/\@]+[\w\/])/'

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