php - RegEx to find anchor element in HTML page -

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i have string mixed content of plain text , html tags. example: 

the state of <a href="/wiki/texas" title="texas">texas</a> cool place

i want search specific string in html page using php file_get_contents().

eventually, want replace string string mixed content.

i tried preg_replace(), didn't work.

is going easy task regex? can give example? i'm starting out regex. if not suitable can please suggest solution.


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