Improved output for no result

Author: myaaghubi

libs/build_table.php

@@ -5,13 +5,22 @@ function build_table($results, $header = true)
     $table = '';
 
     if ($header) {
-        $table .= '|framework          |requests per second|relative|peak memory|relative|' . "\n";
-        $table .= '|-------------------|------------------:|-------:|----------:|-------:|' . "\n";
+        $table .= '|framework          |requests per second (rps)|relative (rps)|peak memory|relative (mem)|' . "\n";
+        $table .= '|-------------------|------------------------:|-------------:|----------:|-------------:|' . "\n";
+    }
+
+    if (!$results) {
+        $text = 'Table is empty!';
+        $lLen = 87;
+        $lELen = ($lLen - strlen($text))/2;
+        
+        $table .= sprintf("|%".$lELen."s%".strlen($text)."s%".$lELen."s|\n", '', $text, '');
+        return $table;
     }
 
     foreach ($results as $fw => $result) {
         $table .= sprintf(
-            "|%-19s|%19s|%8s|%11s|%8s|\n",
+            "|%-19s|%25s|%14s|%11s|%14s|\n",
             $fw,
             number_format($result['rps'], 2),
             number_format($result['rps_relative'], 1),

libs/parse_results.php

@@ -2,6 +2,8 @@
 
 function parse_results($file)
 {
+    if (!file_exists($file))
+    return;
     $lines = file($file);
 
     $results = [];