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<?php $valid_strings = array("<p>","&nbsp;","</p>"); $test1 = "<p>asdasdasdasdasdasdasd</p>"; $test2 = "<p>&nbsp;&nbsp;&nbsp;&nbsp;</p>"; echo ContainsAnythingElseThan($test1,$valid_strings); echo ContainsAnythingElseThan($test2,$valid_strings); function ContainsAnythingElseThan($the_string,$the_valid_strings_array) { echo str_len(str_replace($the_valid_strings_array,"",$the_string)); }

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