new pisilinux web sites

Internal/package-security/Script.php

@@ -0,0 +1,69 @@
+<?php namespace ZN\Security;
+/**
+ * ZN PHP Web Framework
+ * 
+ * "Simplicity is the ultimate sophistication." ~ Da Vinci
+ * 
+ * @package ZN
+ * @license MIT [http://opensource.org/licenses/MIT]
+ * @author  Ozan UYKUN [ozan@znframework.com]
+ */
+
+class Script
+{
+    /**
+     * Script Tag Chars
+     * 
+     * @var array
+     */
+    protected static $scriptTagChars =
+    [
+        '/\<script(.*?)\>/i'  => '&#60;script$1&#62;',
+        '/\<\/script\>/i'     => '&#60;/script&#62;'
+    ];
+
+    /**
+     * Script Tag Chars Decode
+     * 
+     * @var array
+     */
+    protected static $scriptTagCharsDecode =
+    [
+        '/\&\#60\;script(.*?)\&\#62\;/i' => '<script$1>',
+        '/\&\#60\;\/script\&\#62\;/i'    => '</script>'
+    ];
+
+    /**
+     * Encode Script Tags
+     * 
+     * @param string $str
+     * 
+     * @return string
+     */
+    public static function encode(string $str) : string
+    {
+        return preg_replace
+        (
+            array_keys(self::$scriptTagChars), 
+            array_values(self::$scriptTagChars), 
+            $str
+        );
+    }
+
+    /**
+     * Decode Script Tags
+     * 
+     * @param string $str
+     * 
+     * @return string
+     */
+    public static function decode(string $str) : string
+    {
+        return preg_replace
+        (
+            array_keys(self::$scriptTagCharsDecode), 
+            array_values(self::$scriptTagCharsDecode), 
+            $str
+        );
+    }
+}