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To: Sherif Ramadan <theanomaly.is@gmail.com>
Cc: Sara Golemon <pollita@php.net>, PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=001a11c3ca14fb8d3204e1e9088c
Subject: Re: [PHP-DEV] Operator precedence is undefined?
From: yohgaki@ohgaki.net (Yasuo Ohgaki)

--001a11c3ca14fb8d3204e1e9088c
Content-Type: text/plain; charset=ISO-2022-JP
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Hi Sherif,

I changed the example as follows.
Thank you for your comment.

[yohgaki@dev en]$ svn diff
Index: language/operators.xml
===================================================================
--- language/operators.xml (リビジョン 330982)
+++ language/operators.xml (作業コピー)
@@ -225,15 +225,16 @@
 <![CDATA[
 <?php
 $a = 3 * 3 % 5; // (3 * 3) % 5 = 4
+// ternary operator associativity differs from C/C++
 $a = true ? 0 : true ? 1 : 2; // (true ? 0 : true) ? 1 : 2 = 2

 $a = 1;
 $b = 2;
 $a = $b += 3; // $a = ($b += 3) -> $a = 5, $b = 5

-// mixing ++ and + produces undefined behavior
+// mixing ++ and +
 $a = 1;
-echo ++$a + $a++; // may print 4 or 5
+echo ++$a + $a++; // same as ++$a; echo $a + $a; $a++;
 ?>
 ]]>
      </programlisting>

--001a11c3ca14fb8d3204e1e9088c--