add inc_functions

public_html/inc_functions.php

+<?php
+
+function showExample($sPhpcode){
+    global $renderAdminLTE;
+    $sOut = '';
+
+    eval("\$sOut=$sPhpcode;");
+
+    return '
+        <h3>PHP code</h3>
+        <pre>'.htmlentities($sPhpcode).'</pre>
+
+        <h3>Output</h3>
+            '.$sOut.'
+
+    ';
+}
\ No newline at end of file

public_html/index.php

@@ -3,6 +3,8 @@
 require_once('classes/render-adminlte.class.php');
 require_once('classes/pageinclude.class.php');
 
+require_once('inc_functions.php');
+
 // ----------------------------------------------------------------------
 // CONFIG
 // ----------------------------------------------------------------------