正则表达式 - 阻止垃圾邮件

Question

Could someone lead me on finding a regular expression that blocks a comma separated list of Spam words I already have?

The regular expression needs to match a string with the spam word list I already have.

Not that it matters, but I am using PHP.

Answer 1

Try this:

 \b(word1|word2|...)\b

The \b will match between a word character and a non-word character (so that the expression won't match if the words appear as part of a longer word).