PHP又升级了，是因为莫名其妙到报告 session_register 不能使用，经过一番查找，才知道是因为昨天对Ubuntu作了升级，顺便PHP也升级了。经过整理，把PHP5.3以上版本到不能使用或者不建议使用到函数整理出来。

在Windows 下用PHP 5.3.2 部署 Testlink 1.8.5， Apache2.2的error.log中会发生
PHP Deprecated:  Function ereg_replace() is deprecated in (Dir):\\testlink\\lib\\functions\\lang_api.php on line 173, referer: …
的 错误。
这是由于Testlink 1.8.5 的php源码中有些方法在 php 5.3版本中已不推荐使用。

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这 个是我个人解决安装出现问题的方法：
修改testlink1.8.5的php源码,修复此问题。
需要修改的文件以及方法：
1. testlink\lib\functions\lang_api.php, line173
将 $t_lang_var = ereg_replace( ‘^TLS_’, ”, $t_var );
修改为 $t_lang_var = preg_replace( ‘^TLS_^’, ”, $t_var );
（这里添加^是因为方法中关于delimiter的用法。否则会发生 Warning: preg_replace() [function.preg-replace]: No ending delimiter ‘:’ found in …）
2. testlink\third_party\phplayersmenu\dumps\sqlite.demo_data.dump.php5 中 ereg_replace方法改为preg_replace；
testlink\third_party\phplayersmenu\dumps\sqlite.start.dump.php5 中 ereg_replace方法改为preg_replace；
3. testlink\third_party\phplayersmenu\lib\layersmenu-common.inc.php 中 ereg_replace方法改为preg_replace.
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参 考官方文档说明： http://php.net/manual/en/migration53.deprecated.php

Deprecated features in PHP 5.3.x

PHP 5.3.0 introduces two new error levels:E_DEPRECATEDandE_USER_DEPRECATED. TheE_DEPRECATEDerror level is used to indicate that a function or feature has been deprecated. TheE_USER_DEPRECATEDlevel is intended for indicating deprecated features in user code, similarly to theE_USER_ERRORandE_USER_WARNINGlevels.

The following is a list of deprecated INI directives. Use of any of these INI directives will cause anE_DEPRECATEDerror to be thrown at startup.

• define_syslog_variables
• register_globals
• register_long_arrays
• safe_mode
• magic_quotes_gpc
• magic_quotes_runtime
• magic_quotes_sybase
• Comments starting with ‘#’ are now deprecated in .INI files.

Deprecated functions:

• call_user_method()(usecall_user_func()instead)
• call_user_method_array()(usecall_user_func_array()instead)
• define_syslog_variables()
• dl()
• ereg()(usepreg_match()instead)
• ereg_replace()(usepreg_replace()instead)
• eregi()(usepreg_match()with the‘i’modifier instead)
• eregi_replace()(usepreg_replace()with the‘i’modifier instead)
• set_magic_quotes_runtime()and its alias,magic_quotes_runtime()
• session_register()(use the$_SESSIONsuperglobal instead)
• session_unregister()(use the$_SESSIONsuperglobal instead)
• session_is_registered()(use the$_SESSIONsuperglobal instead)
• set_socket_blocking()(usestream_set_blocking()instead)
• split()(usepreg_split()instead)
• spliti()(usepreg_split()with the‘i’modifier instead)
• sql_regcase()
• mysql_db_query()(usemysql_select_db()andmysql_query()instead)
• mysql_escape_string()(usemysql_real_escape_string()instead)
• Passing locale category names as strings is now deprecated. Use the LC_* family of constants instead.
• Theis_dstparameter tomktime(). Use the new timezone handling functions instead.

Deprecated features:

• Assigning the return value ofnewby reference is now deprecated.
• Call-time pass-by-reference is now deprecated.
• The use of{}to access string offsets is deprecated. Use[]instead.

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