diff --git a/functions/math.xml b/functions/math.xml
index 7b978d4937..fd3f76c365 100644
--- a/functions/math.xml
+++ b/functions/math.xml
@@ -1,5 +1,5 @@
 <?xml encoding="iso-8859-1"?>
-<!-- $Revision: 1.54 $ -->
+<!-- $Revision: 1.55 $ -->
  <reference id="ref.math">
   <title>Mathematical Functions</title>
   <titleabbrev>Math</titleabbrev>
@@ -796,8 +796,8 @@ var_dump(hexdec("a0"));
       <programlisting role="php">
 // seed with microseconds
 function make_seed() {
-    list($usec,$sec) = explode(" ", microtime());
-    return ((float)$sec+(float)$usec) * 100000;
+    list($usec, $sec) = explode(' ', microtime());
+    return (float) $sec + ((float) $usec * 100000);
 }
 mt_srand(make_seed());
 $randval = mt_rand();
@@ -1229,8 +1229,8 @@ $foo = round(1241757, -3);  // $foo == 1242000
       <programlisting role="php">
 // seed with microseconds
 function make_seed() {
-    list($usec,$sec) = explode(" ", microtime());
-    return ((float)$sec+(float)$usec) * 100000;
+    list($usec, $sec) = explode(' ', microtime());
+    return (float) $sec + ((float) $usec * 100000);
 }
 srand(make_seed());
 $randval = rand();