diff --git a/data/5.4.php b/data/5.4.php
index 628f70f..590a235 100644
--- a/data/5.4.php
+++ b/data/5.4.php
@@ -4,5 +4,8 @@
         'mcrypt_generic_end' => 'mcrypt_generic_deinit',
         'magic_quotes_runtime',
         'mysql_list_dbs',
-    ]
+    ],
+    'functions_usage' => [
+        'imagescale' => '@not_yet_implemented',
+    ],
 ];
diff --git a/data/not_yet_implemented.php b/data/not_yet_implemented.php
new file mode 100644
index 0000000..18c466d
--- /dev/null
+++ b/data/not_yet_implemented.php
@@ -0,0 +1,21 @@
+<?php
+namespace wapmorgan\PhpCodeFixer;
+
+/**
+ *
+ * @test Any
+ * @param array $usageTokens
+ * @return bool|string
+ */
+
+function not_yet_implemented(array $usageTokens){
+    if (count($usageTokens) === 0)
+        return false;
+
+    // Make these Vars so that in the future this could work for more than
+    // just functions. See Issue #84
+    $Pfx = 'Function';
+    $Sfx = '()';
+    return "$Pfx " . $usageTokens[0][1]
+    . "$Sfx not yet implemented on this version of PHP.";
+}