<athe literal text <a (case sensitive) \s+any whitespace character, repeated at least once
href=the literal text href= (case sensitive) Negated Character Class[^>]+ +matches at least one character outside the set below:
>the literal > (6210 / 768 / 3E16)
>the literal > (6210 / 768 / 3E16)
<imgthe literal text <img (case sensitive) Negated Character Class[^>]+ +matches at least one character outside the set below:
>the literal > (6210 / 768 / 3E16)
>the literal > (6210 / 768 / 3E16)
<the literal < (6010 / 748 / 3C16)
\/the literal / (4710 / 578 / 2F16)
a>the literal text a> (case sensitive) g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
U modifier: Ungreedy. Quantifiers are lazy by default. A trailing ? makes a quantifier greedy