diff --git a/.travis.yml b/.travis.yml
index 151cc42..eff1331 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,6 +19,7 @@ jobs:
     - php: "7.2"
     - php: "7.3"
     - php: "7.4"
+    - php: "nightly"
     - name: "Php CS Fixer"
       php: "7.3"
       env:
diff --git a/lib/HTTP/ConditionalGet.php b/lib/HTTP/ConditionalGet.php
index 8bfd0af..6087c04 100644
--- a/lib/HTTP/ConditionalGet.php
+++ b/lib/HTTP/ConditionalGet.php
@@ -317,7 +317,9 @@ class HTTP_ConditionalGet
         if (!isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
             return false;
         }
-        $clientEtagList = $_SERVER['HTTP_IF_NONE_MATCH'];
+        $clientEtagList = PHP_VERSION_ID < 50400 && get_magic_quotes_gpc()
+            ? stripslashes($_SERVER['HTTP_IF_NONE_MATCH'])
+            : $_SERVER['HTTP_IF_NONE_MATCH'];
         $clientEtags = explode(',', $clientEtagList);
 
         $compareTo = $this->normalizeEtag($this->_etag);
diff --git a/lib/Minify/ImportProcessor.php b/lib/Minify/ImportProcessor.php
index f8ed4b4..00e413b 100644
--- a/lib/Minify/ImportProcessor.php
+++ b/lib/Minify/ImportProcessor.php
@@ -182,7 +182,7 @@ class Minify_ImportProcessor
     private function truepath($path)
     {
         // whether $path is unix or not
-        $unipath = ('' === $path) || ($path{0} !== '/');
+        $unipath = ('' === $path) || ($path[0] !== '/');
 
         // attempts to detect if path is relative in which case, add cwd
         if (strpos($path, ':') === false && $unipath) {
diff --git a/min_extras/tools/minifyUrl.php b/min_extras/tools/minifyUrl.php
index 8851c87..8ae40bf 100644
--- a/min_extras/tools/minifyUrl.php
+++ b/min_extras/tools/minifyUrl.php
@@ -17,7 +17,7 @@ function getPost($key)
     if (! isset($_POST[$key])) {
         return null;
     }
-    return get_magic_quotes_gpc()
+    return (PHP_VERSION_ID < 50400 && get_magic_quotes_gpc())
         ? stripslashes($_POST[$key])
         : $_POST[$key];
 }
diff --git a/tests/HTTPConditionalGetTest.php b/tests/HTTPConditionalGetTest.php
index e6365f4..19b19b5 100644
--- a/tests/HTTPConditionalGetTest.php
+++ b/tests/HTTPConditionalGetTest.php
@@ -127,7 +127,7 @@ class HTTPConditionalGetTest extends TestCase
         if (null === $inm) {
             unset($_SERVER['HTTP_IF_NONE_MATCH']);
         } else {
-            $_SERVER['HTTP_IF_NONE_MATCH'] = get_magic_quotes_gpc()
+            $_SERVER['HTTP_IF_NONE_MATCH'] = PHP_VERSION_ID < 50400 && get_magic_quotes_gpc()
                 ? addslashes($inm) :
                 $inm;
         }