一般空间商提供的服务器空间默认PHP 指令 magic_quotes_gpc是on的,也就是打开的。这时候就可以用stripslashes() 函数删除自动添加的反斜杠。用法就是:比如包含字符串的变量是$str,那么就用stripslashes() 函数处理一下这个字符串:stripslashes($str),输出的结果就是去掉反斜杠的。
如果遇到输出的结果中包含反斜杠的,可对输出内容用stripslashes()函数处理一下,即$str=stripslashes($str),保存即可将输出内容中包含的反斜杠去掉。
但是又存在另外一个问题,那就是因为本地PHP 指令 magic_quotes_gpc是off的,如果用这个函数的话,就会把本来正常的反斜杠也去掉了。这样就不是我们所希望的了。
解决办法就是可以使用函数 get_magic_quotes_gpc() 进行检测,如果是打开的状态,那么就去除反斜杠,如果是关闭的状态,则不去除反斜杠。
程序代码如下:
复制代码 代码如下:
$str=$_POST["str"]; //读取str的内容赋值给$str变量
if(get_magic_quotes_gpc()){ //如果get_magic_quotes_gpc()是打开的
$str=stripslashes($str); //将字符串进行处理
}
本文于2012年4月25日10:08:03修订如下:
下面介绍三种方法解决这个问题:
1、修改PHP配置文件php.ini
这种方法只适于自己有权管理服务器的情况下,如果用的虚拟空间,那就只能采用后两条方法。
在PHP配置文件php.ini中将magic_quotes_gpc、magic_quotes_runtime、magic_quotes_sybase全部设为off。如下所示:
复制代码 代码如下:
magic_quotes_gpc = Off
magic_quotes_runtime = Off
magic_quotes_sybase = Off
2 利用.htaccess文件
该方法只在服务器支持htaccess的情况下,现在的服务器一般都会支持的
在程序目录下.htaccess文件中增加下面一句:
php_flag magic_quotes_gpc Off
3 在代码中屏蔽
该方法是移植性最强的,不用考虑服务器的配置,只要支持PHP就可以使用。
在所有PHP文件开始处增加下面代码
复制代码 代码如下:
if(get_magic_quotes_gpc()){
function stripslashes_deep($value){
$value=is_array($value)?array_map('stripslashes_deep',$value):stripslashes($value);
return $value;
}
$_POST=array_map('stripslashes_deep',$_POST);
$_GET=array_map('stripslashes_deep',$_GET);
$_COOKIE=array_map('stripslashes_deep',$_COOKIE);
$_REQUEST=array_map('stripslashes_deep',$_REQUEST);
}

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