php 调用未定义的函数 filter_var()
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Call to undefined function filter_var()
提问by Avdept
After transfering my site to another hosting i got this error:
将我的网站转移到另一个主机后，我收到此错误：
Fatal error: Call to undefined function filter_var() in
/home/ultrastep/ultrastep.ru/docs/sites/all/modules/q_cart/q_cart.module on line 410
PHP version on server is 5.2.10.
服务器上的 PHP 版本是 5.2.10。
Any ideas whats wrong?
任何想法有什么问题？
回答by ragnar
You need to have the php module "Filter" installed
您需要安装php模块“过滤器”
回答by blizz
In case someone else stumbles upon this like I did, here is the solution I found for Redhat/CentOS:
如果其他人像我一样偶然发现了这一点，这是我为 Redhat/CentOS 找到的解决方案：
http://www.cyberciti.biz/faq/rhel-cento-linux-install-php-pecl-filter/
http://www.cyberciti.biz/faq/rhel-cento-linux-install-php-pecl-filter/
Install php-devel You need to install php-devel to compile php extensions:
安装 php-devel 需要安装 php-devel 来编译 php 扩展：
yum install php-devel
yum install php-devel
Download php source code php_pcre.h header file is not includes with php source code 5.1.6, so you need php source code as well. Visit php.net to grab latest version and store to /opt directory. Use lynx and elinks:
下载 php 源代码 php_pcre.h 头文件不包含在 php 源代码 5.1.6 中，因此您还需要 php 源代码。访问 php.net 获取最新版本并存储到 /opt 目录。使用 lynx 和 elinks：
cd /opt
cd /opt
elinks http://www.php.net/get/php-5.2.6.tar.bz2/from/a/mirror
elinks http://www.php.net/get/php-5.2.6.tar.bz2/from/a/mirror
Save php source to code to disk. Next, extract source code:
将 php 源代码保存到磁盘。接下来，提取源代码：
tar -jxvf php-5.2.6.tar.bz2
tar -jxvf php-5.2.6.tar.bz2
Download filter extension Visit pecl extension to grab latest source code for filter:
下载过滤器扩展访问 pecl 扩展以获取过滤器的最新源代码：
cd /optwget http://pecl.php.net/get/filter-0.11.0.tgz
cd /optwget http://pecl.php.net/get/filter-0.11.0.tgz
Install filter extension Unrar file:
安装过滤器扩展 Unrar 文件：
tar -jxvf filter-0.11.0.tgz
tar -jxvf filter-0.11.0.tgz
cd filter-0.11.0
cd filter-0.11.0
Open logical_filters.c file:
打开 logical_filters.c 文件：
vi logical_filters.c
vi logical_filters.c
Find line that read as follows:
查找如下所示的行：
include "ext/pcre/php_pcre.h"
include "ext/pcre/php_pcre.h"
Change to (the absolute path of php_pcre.h is required):
改为（需要php_pcre.h的绝对路径）：
include "/opt/php-5.2.6/ext/pcre/php_pcre.h"
include "/opt/php-5.2.6/ext/pcre/php_pcre.h"
Save and close the file. Finally, type the following commands to compile extension:
保存并关闭文件。最后，输入以下命令编译扩展：
phpize
phpize
./configure
./configure
make install
make install
Configure Filter Extension Type the following command:
配置过滤器扩展 键入以下命令：
echo 'extension=filter.so' > /etc/php.d/filter.ini
echo 'extension=filter.so' > /etc/php.d/filter.ini
Restart httpd:
重启httpd：
service httpd restart
service httpd restart
