PHP正则表达式匹配URL与特定链接文本

Question

I'm having issues matching a specific link with regex.

The link's title looks like this: italicized — Some More Words (1234)

I'm using this regex expression, but it's not finding any matches:

<a href=\"([^\"]*)\"><em>italicized<\/em> &mdash; Some More Words ([0-9]{4})<\/a>

Additionally, the numbers portion of the link title can vary, thus the reason for the number capture group.

Answer 1

Your parens ( and ) are meta characters for capture groups.

They won't match literal paranthesis in the source text. For that they had to be escaped.