type/base: replace array_merge by + sign to merge a fallback array

array_merge resets the index, while in case of $this->colors and
$this->legend, we'd like to keep the index. An irq plugin sample:
array(1 => 1, 'ERR' => 'ERR') must not become
array(0 => 1, 'ERR' => 'ERR') after an array_merge.

1 files changed, 2 insertions, 2 deletions

diff --git a/type/Base.class.php b/type/Base.class.php
index 883c98f..34e182f 100644
--- a/type/Base.class.php
+++ b/type/Base.class.php
@@ -191,7 +191,7 @@ class Type_Base {
 
                 $colors = $this->colors;
                 $this->rainbow_colors();
-                $this->colors = array_merge($this->colors, $colors);
+                $this->colors = $colors + $this->colors;
 
                 $graphdata = $this->rrd_gen_graph();
 
@@ -304,7 +304,7 @@ class Type_Base {
 
         function parse_legend($sources) {
                 # fill up legend by items that are not defined by plugin
-                $this->legend = array_merge(array_combine($sources, $sources), $this->legend);
+                $this->legend = $this->legend + array_combine($sources, $sources);
 
                 # detect length of longest legend
                 $max = 0;