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-rw-r--r--engine/lib/output.php57
1 files changed, 57 insertions, 0 deletions
diff --git a/engine/lib/output.php b/engine/lib/output.php
index 640ada1cf..28e520e56 100644
--- a/engine/lib/output.php
+++ b/engine/lib/output.php
@@ -263,3 +263,60 @@ function elgg_strip_tags($string) {
return $string;
}
+
+/**
+ * Filters a string into an array of significant words
+ *
+ * @deprecated 1.8
+ * @param string $string
+ * @return array
+ */
+function filter_string($string) {
+ elgg_deprecated_notice('filter_string() was deprecated!', 1.8);
+
+ // Convert it to lower and trim
+ $string = strtolower($string);
+ $string = trim($string);
+
+ // Remove links and email addresses
+ // match protocol://address/path/file.extension?some=variable&another=asf%
+ $string = preg_replace("/\s([a-zA-Z]+:\/\/[a-z][a-z0-9\_\.\-]*[a-z]{2,6}[a-zA-Z0-9\/\*\-\?\&\%\=]*)([\s|\.|\,])/iu"," ", $string);
+ // match www.something.domain/path/file.extension?some=variable&another=asf%
+ $string = preg_replace("/\s(www\.[a-z][a-z0-9\_\.\-]*[a-z]{2,6}[a-zA-Z0-9\/\*\-\?\&\%\=]*)([\s|\.|\,])/iu"," ", $string);
+ // match name@address
+ $string = preg_replace("/\s([a-zA-Z][a-zA-Z0-9\_\.\-]*[a-zA-Z]*\@[a-zA-Z][a-zA-Z0-9\_\.\-]*[a-zA-Z]{2,6})([\s|\.|\,])/iu"," ", $string);
+
+ // Sanitise the string; remove unwanted characters
+ $string = preg_replace('/\W/ui', ' ', $string);
+
+ // Explode it into an array
+ $terms = explode(' ',$string);
+
+ // Remove any blacklist terms
+ //$terms = array_filter($terms, 'remove_blacklist');
+
+ return $terms;
+}
+
+/**
+ * Returns true if the word in $input is considered significant
+ *
+ * @deprecated 1.8
+ * @param string $input
+ * @return true|false
+ */
+function remove_blacklist($input) {
+ elgg_deprecated_notice('remove_blacklist() was deprecated!', 1.8);
+
+ global $CONFIG;
+
+ if (!is_array($CONFIG->wordblacklist)) {
+ return $input;
+ }
+
+ if (strlen($input) < 3 || in_array($input,$CONFIG->wordblacklist)) {
+ return false;
+ }
+
+ return true;
+} \ No newline at end of file