Allow storage of values that evaluate to false (empty array, numberic…

… zero, boolean false, etc) - #6

src/RWFileCache.php

@@ -112,8 +112,14 @@ public function get($key)
         if ($cacheObj->expiryTimestamp > time() || $unixLoad[0] >= $this->config['unixLoadUpperThreshold']) {
             // Cache item has not yet expired or system load is too high
             $content = $cacheObj->content;
-            if ($unserializedContent = @unserialize($content)) {
+
+            if (($unserializedContent = @unserialize($content))!==false) {
+                // Normal unserialization
                 $content = $unserializedContent;
+
+            } elseif ($content==serialize(false)) {
+                // Edge case to handle boolean false being stored
+                $content = false;
             }
 
             return $content;

src/test.php

@@ -6,8 +6,32 @@
 
 $cache1->changeConfig(['cacheDirectory' => '/tmp/rwFileCacheStorage/']);
 
-$cache1->set('first.test.stringContent', 'Mary had a little lamb.', strtotime('+ 1 day'));
+// Test basic string storage and retrieval
+$key = 'first.test.stringContent';
+$cache1->set($key, 'Mary had a little lamb.', strtotime('+ 1 day'));
+$var = $cache1->get($key);
+var_dump($var);
+
+// Test empty array storage and retrieval
+$key = 'second.test.emptyArray';
+$cache1->set($key, [], strtotime('+ 1 day'));
+$var = $cache1->get($key);
+var_dump($var);
 
-$var = $cache1->get('first.test.stringContent');
+// Test numeric zero storage and retrieval
+$key = 'third.test.numericZero';
+$cache1->set($key, 0, strtotime('+ 1 day'));
+$var = $cache1->get($key);
+var_dump($var);
+
+// Test boolean false storage and retrieval
+$key = 'fourth.test.booleanFalse';
+$cache1->set($key, false, strtotime('+ 1 day'));
+$var = $cache1->get($key);
+var_dump($var);
 
+// Test boolean true storage and retrieval
+$key = 'fifth.test.booleanTrue';
+$cache1->set($key, true, strtotime('+ 1 day'));
+$var = $cache1->get($key);
 var_dump($var);