I want to use regular expression matching.

I want to use regular expression matching. I want to use regular expression matching & lt; tableclass & quot; result-op & quot; cellpadding & quot; 0 & quot; where class & quot; result-op & quot; does not exist or can exist .. To put it simply, Match & lt; tableclass & quot; result-op & quot; cellpaddi on the page. I want to use regular expression matching.
I want to use regular expression matching Here, class = "result-op" can either exist or not .. Simply put, match

PHP code

Preg_match ('/

  

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