第一个问题，php 模块强制引用传参的说明 PHP4 和 PHP5 是完全不同的。这个已经在 CVS
内修正，smthbbs 1.2.1 需要做的修改：

diff -u -r1.362 -r1.378
--- smth_bbs/bbs2www/phplib/phpbbslib.c,v       13 Jun 2004 13:44:07 -0000      1.362
+++ smth_bbs/bbs2www/phplib/phpbbslib.c,v       16 Jul 2004 01:22:41 -0000      1.378
@@ -21,6 +21,58 @@
#include "bbslib.h"
#include "vote.h"

+#if PHP_MAJOR_VERSION == 5
+static
+     ZEND_BEGIN_ARG_INFO(one_arg_force_ref_1, 0)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+static
+     ZEND_BEGIN_ARG_INFO(two_arg_force_ref_01, 0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+static
+     ZEND_BEGIN_ARG_INFO(third_arg_force_ref_1111, 0)
+             ZEND_ARG_PASS_INFO(1)
+             ZEND_ARG_PASS_INFO(1)
+             ZEND_ARG_PASS_INFO(1)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+static
+     ZEND_BEGIN_ARG_INFO(third_arg_force_ref_011, 0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(1)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+static
+     ZEND_BEGIN_ARG_INFO(fourth_arg_force_ref_0001, 0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+static
+     ZEND_BEGIN_ARG_INFO(fourth_arg_force_ref_0111, 0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(1)
+             ZEND_ARG_PASS_INFO(1)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+static
+     ZEND_BEGIN_ARG_INFO(third_arg_force_ref_001, 0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+static
+     ZEND_BEGIN_ARG_INFO(fifth_arg_force_ref_00011, 0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(0)
+             ZEND_ARG_PASS_INFO(1)
+             ZEND_ARG_PASS_INFO(1)
+     ZEND_END_ARG_INFO();
+#else //if PHP_MAJOR_VERSION == 4
static unsigned char one_arg_force_ref_1[]  = { 1, BYREF_FORCE };
static unsigned char two_arg_force_ref_01[] = { 2, BYREF_NONE, BYREF_FORCE };
static unsigned char third_arg_force_ref_1111[] = { 4, BYREF_FORCE, BYREF_FORCE, BYREF_FORCE, BYREF_FORCE };
@@ -29,8 +81,9 @@
static unsigned char fourth_arg_force_ref_0111[] = { 4, BYREF_NONE, BYREF_FORCE, BYREF_FORCE, BYREF_FORCE };
static unsigned char third_arg_force_ref_001[] = { 3, BYREF_NONE, BYREF_NONE, BYREF_FORCE };
static unsigned char fifth_arg_force_ref_00011[] = { 5, BYREF_NONE, BYREF_NONE, BYREF_NONE, BYREF_FORCE , BYREF_FORCE};
+#endif




第二个问题，PHP5 的 dom 支持完全重写，受影响的是所有和 xml 操作有关的页面。
有一个 dirty-fix 很容易，请参考 PHP 手册上 domxml 的一个 user note

http://alexandre.alapetite.net/doc-alex/domxml-php4-php5/
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