Home Web Front-end HTML Tutorial 关于html_entity_decode、空格 以及乱码_html/css_WEB-ITnose

关于html_entity_decode、空格 以及乱码_html/css_WEB-ITnose

Jun 24, 2016 am 11:18 AM

普通ASCII码空格为32,但是浏览器会对普通空格进行自动归并,

也就是如果你输入10个0x20的空格在HTML页面里面,可能会被合并成一个空格。

如果想要一致的呈现多个空格,就要用到 ,这个空格的编码为160,为西欧ISO-8859-1编码标准。


为了让经过HTML编码的内容还原为原来的文本字符,可以使用html_entity_decode方法,

但这样问题就来了,通常HTML编码内容为UTF8格式的,html_entity_decode在浏览器UTF8编码环境下会把

 转为一个黑色四方形状的乱码。只有切换为ISO-8859-1才能正确显示为空格。


所以在使用html_entity_decode之前,需要先把 替换掉(str_replace),这样就可以避免乱码问题。

示例:

 对下面这段字符串直接进行HTML解码后,会出现乱码的问题:

     $str = '真爱粉们,当时活动的一些精选片段吧~ </font></div><div><';$content = html_entity_decode($str);print_r($content );
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结果:

先将空格 替换掉,然后再应用html_entity_decode解码后,就不会出现问题了。

                  $str = '真爱粉们,当时活动的一些精选片段吧~ </font></div><div><';  // 替换空隔符 $content = str_replace(" ","[space_code]",$str); $content = html_entity_decode( $content );  // 转换之后,再将空格符替换回来  $content = str_replace("[space_code]"," ",$content);    print_r($content );
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还有一种简单的方法,htmlspecialchars_decode( )不用转换空格就可以转化并且不出现乱码:

     $str = '真爱粉们,当时活动的一些精选片段吧~ </font></div><div><';    $content = htmlspecialchars_decode($str);
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