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PHP function htmlspecialchars_decode() that converts predefined html entities into characters
PHP function htmlspecialchars_decode() that converts predefined html entities into characters
实例
把预定义的 HTML 实体 "<"（小于）和 ">"（大于）转换为字符：
<?php $str = "This is some <b>bold</b> text."; echo htmlspecialchars_decode($str); ?>
上面代码的 HTML 输出如下（查看源代码）：
<!DOCTYPE html> <html> <body> This is some <b>bold</b> text. </body> </html>
上面代码的浏览器输出如下：
This is some bold text.
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：
& 解码成 & （和号）
" 解码成 " （双引号）
' 解码成 ' （单引号）
< 解码成 < （小于）
> 解码成 > （大于）
htmlspecialchars_decode() 函数是 htmlspecialchars() 函数的反函数。
语法
htmlspecialchars_decode(string,flags)
| 参数 | 描述 |
| string | 必需。规定要解码的字符串。 |
| flags | 可选。规定如何处理引号以及使用哪种文档类型。 可用的引号类型：
规定使用的文档类型的附加 flags：
|
技术细节
| 返回值： | 返回已转换的字符串。 |
| PHP 版本： | 5.1.0+ |
| 更新日志： | 在 PHP 5.4 中，新增了用于规定使用的文档类型的附加 flags：ENT_HTML401、ENT_HTML5、ENT_XML1 和 ENT_XHTML。 |
更多实例
实例 1
把一些预定义的 HTML 实体转换为字符：
<?php $str = "Jane & 'Tarzan'"; echo htmlspecialchars_decode($str, ENT_COMPAT); // 默认，仅解码双引号echo "<br>"; echo htmlspecialchars_decode($str, ENT_QUOTES); // 解码双引号和单引号echo "<br>"; echo htmlspecialchars_decode($str, ENT_NOQUOTES); // 不解码任何引号 ?>
上面代码的 HTML 输出如下（查看源代码）：
<!DOCTYPE html> <html> <body> Jane & 'Tarzan'<br>Jane & 'Tarzan'<br>Jane & 'Tarzan' </body> </html>
上面代码的浏览器输出如下：
Jane & 'Tarzan' Jane & 'Tarzan' Jane & 'Tarzan'
实例 2
把预定义 HTML 实体转换为双引号：
<?php $str = 'I love "PHP".'; echo htmlspecialchars_decode($str, ENT_QUOTES); // 解码双引号和单引号 ?>
上面代码的 HTML 输出如下（查看源代码）：
<!DOCTYPE html> <html> <body>I love "PHP".</body> </html>
上面代码的浏览器输出如下：
I love "PHP".
htmlspecialchars_decode() 函数把一些预定义的 HTML 实体转换为字符。
<?php $str = "This is some <b>bold</b> text."; echo htmlspecialchars_decode($str); ?>
会被解析成
<!DOCTYPE html> <html> <body> This is some <b>bold</b> text. </body> </html>
用户商品详情的输出。
<p>
{sh:$info.intro|htmlspecialchars_decode}
</p>The above is the detailed content of PHP function htmlspecialchars_decode() that converts predefined html entities into characters. For more information, please follow other related articles on the PHP Chinese website!
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