function stripTweet($profileString)
{
$lower = strtolower($profileString);
$split = preg_split('/\\s+/', $lower);
$result = "";
foreach ($split as $tokenWithPunctuation) {
if (strlen($tokenWithPunctuation) >= 4 && substr($tokenWithPunctuation, 0, 3) == "www" || substr($tokenWithPunctuation, 0, 4) == "http") {
continue;
}
if ($tokenWithPunctuation[0] == "@") {
continue;
}
$token = removePunctuation($tokenWithPunctuation);
if ($token == "") {
continue;
}
if ($token == "rt") {
continue;
}
if (isStopword($token)) {
continue;
}
$result .= $token . " ";
}
return $result;
}
/**
* Provides and abstraction to the strip_tags function with some additional
* case switching for the type of file that is being parsed.
*
* @param $string
* A string with tags in it (or not) to be parsed and have the tags stripped.
*
* @param $tags
* The tags which will be passed into remove_elements().
*
* @param $type
* The type of file from which the tags are being stripped.
*
* @return string
* A string of scrubbed text. Generally returned via AJAX instead
* of a direct call.
*
* @see remove_elements()
*
*/
function scrub_text($string, $formatting, $tags, $punctuation, $digits, $removeStopWords, $lemmatize, $consolidate, $formatspecial, $lowercase, $common, $stopWords = "", $lemmas = "", $consolidations = "", $specials = "", $type = 'default')
{
switch ($type) {
case 'default':
// Make the string variable a string with the requested elements removed.
utf8_encode($string);
$string = html_entity_decode($string, ENT_QUOTES, 'UTF-8');
print "<br /> Before lowercase <br />" . substr($string, 0, 1000) . "<br />";
if ($lowercase == "on") {
$string = strtolower($string);
$caparray = array("Æ", "Ð", "Þ");
$lowarray = array("æ", "ð", "þ");
$string = str_replace($caparray, $lowarray, $string);
}
print "<br /> After lowercase, before special characters <br />" . substr($string, 0, 1000) . "<br />";
if ($formatspecial == "on" or $common == "on") {
$string = formatSpecial($string, $formatspecial, $specials, $common, $lowercase);
}
print "<br /> After special characters, before strip tags <br />" . substr($string, 0, 1000) . "<br />";
if ($formatting == "on") {
if ($tags == "keep") {
$string = strip_tags($string);
} else {
$string = preg_replace("'<(.*?)>(.*?)</(.*?)>'U", "", $string);
}
}
print "<br /> After strip tags, before remove punctuation <br />" . substr($string, 0, 1000) . "<br />";
if ($punctuation == "on") {
$string = removePunctuation($string);
}
print "<br /> After remove punctuation, before remove digits <br />" . substr($string, 0, 1000) . "<br />";
if ($digits == "on") {
$string = str_replace(range(0, 9), '', $string);
}
print "<br /> After remove digits, before remove stopwords <br />" . substr($string, 0, 1000) . "<br />";
if ($removeStopWords == "on") {
$string = remove_stopWords($string, $stopWords);
}
print "<br /> After remove stopwords, before lemmatize <br />" . substr($string, 0, 1000) . "<br />";
if ($lemmatize == "on") {
$string = lemmatize($string, $lemmas);
}
print "<br /> After lemmatize, before consolidation <br />" . substr($string, 0, 1000) . "<br />";
if ($consolidate == "on") {
$string = consolidate($string, $consolidations);
}
print "<br /> After consolidation <br />" . substr($string, 0, 1000) . "<br />";
// Clean extra spaces
$string = preg_replace("/\\s\\s+/", " ", $string);
return $string;
break;
case 'xml':
// Make the string variable a string with the requested elements removed.
$string = remove_stopWords($string, $stopWords);
strip_tags($string);
break;
case 'sgml':
// Make the string variable a string with the requested elements removed.
$string = remove_stopWords($string, $stopWords);
strip_tags($string);
break;
}
}
