Added php lint checking for travis

.travis.yml

@@ -1,13 +1,19 @@
 language: php
-
-php:
-  - '5.3'
-  - '5.4'
-  - '5.5'
-  - '5.6'
-  - '7.0'
-  - hhvm
-
 matrix:
+  fast_finish: true
+  include:
+  - php: 5.3
+    script: find . -path './lib/influxdb-php' -prune -o -name "*.php" -print0 | xargs -0 -n1 -P8 php -l | grep -v '^No syntax errors detected' ; test $? -eq 1
+  - php: 5.4
+    script: find . -path './lib/influxdb-php' -prune -o -name "*.php" -print0 | xargs -0 -n1 -P8 php -l | grep -v '^No syntax errors detected' ; test $? -eq 1
+  - php: 5.5
+    script: find . -name "*.php" -print0 | xargs -0 -n1 -P8 php -l | grep -v '^No syntax errors detected' ; test $? -eq 1
+  - php: 5.6
+    script: find . -name "*.php" -print0 | xargs -0 -n1 -P8 php -l | grep -v '^No syntax errors detected' ; test $? -eq 1
+  - php: 7.0
+    script: find . -name "*.php" -print0 | xargs -0 -n1 -P8 php -l | grep -v '^No syntax errors detected' ; test $? -eq 1
+  - php: hhvm
+    script: find . -name "*.php" -print0 | xargs -0 -n1 -P8 php -l | grep -v '^No syntax errors detected' ; test $? -eq 1
   allow_failures:
   - php: 7.0
+  - php: hhvm

html/includes/graphs/port/pagp_bits.inc.php

@@ -3,7 +3,7 @@
 // Generate a list of ports and then call the multi_bits grapher to generate from the list
 $i = 0;
 foreach (dbFetchRows('SELECT * FROM `ports` WHERE `device_id` = ? AND `pagpGroupIfIndex` = ?', array($port['device_id'], $port['ifIndex'])) as $int) {
-    $rrd_file = get_port_rrdfile_path ($hostname, int['port_id']);
+    $rrd_file = get_port_rrdfile_path ($hostname, $int['port_id']);
     if (is_file($rrd_file)) {
         $rrd_list[$i]['filename'] = $rrd_file;
         $rrd_list[$i]['descr']    = $int['ifDescr'];