PHP去除回车换行符与敏感html标签
我们经常会在提交表单时发现数据库中有一些看不到的回车换行了,这样如果js调用就会出问题,下面我来介绍在php过滤回车换行方法。
在unix世界换行就用/n来代替,但是windows为了体现他的不同,就用/r/n,更有意思的是在mac中用/r。因此unix系列用 /n,windows系列用 /r/n,mac用 /r,这样就用你写的程序在不同的平台上运行有着不少的麻烦。下面是PHP去除换行符的一些常见方法。
第一种写法:
代码如下 | 复制代码 |
echo $content; |
第二种写法:
代码如下 | 复制代码 |
|
第三种写法:
代码如下 | 复制代码 |
echo $content; |
关于n,r,t
n 软回车: 在Windows 中表示换行且回到下一行的最开始位置 ,在Linux、unix 中只表示换行,但不会回到下一行的开始位置。
r 软空格: 在Linux、unix 中表示返回到当行的最开始位置。 在Mac OS 中表示换行且返回到下一行的最开始位置,相当于Windows 里的 n 的效果。
t 跳格(移至下一列)
在网站看到很多方法.结果都不不能用.一般是n这个符号换不掉,如果n符号清空了,还是会换行,一般是源码代码中有br标签,可以直接替换掉.
代码如下 | 复制代码 |
function DeleteHtml($str) } |
注意,n前面的转义符号.
过滤html与换行实例
代码如下 | 复制代码 |
// $document 应包含一个 HTML 文档。 |

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