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php函数之htmlspecialchars(),htmlentities()等

Jun 13, 2016 am 10:57 AM
htmlentities htmlspecialchars php web Write function exist database editor

 


在web编辑器往数据库写文章内容,或读取数据库内容时,经常会出现不解析的问题,出现一大堆代码,这其实是html实体和相应的字符串转换的问题。

主要涉及到htmlspecialchars(),htmlentities()、htmlspecialchars_decode() 这几个函数。


htmlspecialchars() 函数把一些预定义的字符转换为 HTML 实体。

预定义的字符是:

& (和号) 成为 &

" (双引号) 成为 "

' (单引号) 成为 '

 

 

PHP htmlentities() 函数

定义和用法

htmlentities() 函数把字符转换为 HTML 实体。

语法

htmlentities(string,quotestyle,character-set)

这里要注意这二者的区别

 

 

PHP htmlspecialchars_decode() 函数

定义和用法

htmlspecialchars_decode() 函数把一些预定义的 HTML 实体转换为字符。

会被解码的 HTML 实体是:

& 成为 & (和号)

" 成为 " (双引号)

' 成为 ' (单引号)

< 成为 < (小于)

> 成为 > (大于)

 

 

 

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