Add slugify function for security purpose

htdocs/core/lib/functions.lib.php

@@ -1874,6 +1874,33 @@ function dol_string_nounprintableascii($str, $removetabcrlf = 1)
 	}
 }
 
+/**
+ *  Returns text slugified (no special char, separator is "-".
+ *
+ *  @param	string	$stringtoslugify		String to slugify
+ *  @return string							Slugified string
+ */
+function dolSlugify($stringtoslugify)
+{
+	$slug = dol_string_unaccent($stringtoslugify);
+
+	// Convert special characters to their ASCII equivalents
+	if (function_exists('iconv')) {
+		$slug = iconv('UTF-8', 'ASCII//TRANSLIT//IGNORE', $slug);
+	}
+
+	// Convert to lowercase
+	$slug = strtolower($slug);
+
+	// Replace non-alphanumeric characters with hyphens
+	$slug = preg_replace('/[^a-z0-9]+/', '-', $slug);
+
+	// Remove leading and trailing hyphens
+	$slug = trim($slug, '-');
+
+	return $slug;
+}
+
 /**
  *  Returns text escaped for inclusion into javascript code
  *