diff --git a/system/misc.php b/system/misc.php
new file mode 100644
index 0000000..dfbf86d
--- /dev/null
+++ b/system/misc.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * @file misc.php
+ * @date 2018-04-13
+ * @author Go Namhyeon <gnh1201@gmail.com>
+ * @brief Misc module
+ */
+
+if(!function_exists("cut_str")) {
+	function cut_str($str, $start, $len=0) {
+		$cutted_str = "";
+		if(function_exists("iconv_substr")) {
+			$cutted_str = iconv_substr($str, $start, $len, "utf-8");
+		} elseif(function_exists("mb_substr")) {
+			$cutted_str = mb_substr($str, $start, $len);
+		} else {
+			$cutted_str = substr($start, $len);
+		}
+		
+		return $cutted_str;
+	}
+}
+
+if(!function_exists("read_file_by_line")) {
+	function read_file_by_line($filename) {
+		$lines = array();
+		$handle = fopen($filename, "r");
+		if ($handle) {
+			while (($line = fgets($handle)) !== false) {
+				$lines[] .= $line;
+			}
+
+			fclose($handle);
+		}
+		
+		return $lines;
+	}
+}
+
+if(!function_exists("nl2p")) {
+	function nl2p($string) {
+		$paragraphs = '';
+		foreach (explode("\n", $string) as $line) {
+			if (trim($line)) {
+				$paragraphs .= '<p>' . $line . '</p>';
+			}
+		}
+		return $paragraphs;
+	}
+}