


HTML entity symbols are used to implement reserved characters or to express some common characters that cannot be input by the keyboard. The default character set in most browsers is ISO-8859-1. HTML entity symbols are often used in web design.
For example:
字符 实体名称 实体编号 描述 & & & and符号,与 " " " 引号 © © © 版权标志 ® ® » 注册标志 ™ ™ ™ 商标标志 “ “ “ 左双引号 ” ” ” 右双引号 ‘ ‘ ‘ 做单引号 ’ ’ ’ 右单引号
Due to work needs, I wrote a class for converting HTML entity numbers and non-ASCII strings. The code is as follows:
HtmlEntitie .class.php
<?php/** * HTML实体编号与非ASCII字符串相互转换类 * Date: 2016-09-07 * Author: fdipzone * Ver: 1.0 * * Func: * public encode 字符串转为HTML实体编号 * public decode HTML实体编号转为字符串 * private _convertToHtmlEntities 转换为HTML实体编号处理 */class HtmlEntitie{ // class start public static $_encoding = 'UTF-8'; /** * 字符串转为HTML实体编号 * @param String $str 字符串 * @param String $encoding 编码 * @return String */ public static function encode($str, $encoding='UTF-8'){ self::$_encoding = $encoding; return preg_replace_callback('|[^\x00-\x7F]+|', array(__CLASS__, '_convertToHtmlEntities'), $str); } /** * HTML实体编号转为字符串 * @param String $str HTML实体编号字符串 * @param String $encoding 编码 * @return String */ public static function decode($str, $encoding='UTF-8'){ return html_entity_decode($str, null, $encoding); } /** * 转换为HTML实体编号处理 * @param Mixed $data 待处理的数据 * @param String */ private static function _convertToHtmlEntities($data){ if(is_array($data)){ $chars = str_split(iconv(self::$_encoding, 'UCS-2BE', $data[0]), 2); $chars = array_map(array(__CLASS__, __FUNCTION__), $chars); return implode("", $chars); }else{ $code = hexdec(sprintf("%02s%02s;", dechex(ord($data {0})), dechex(ord($data {1})) )); return sprintf("&#%s;", $code); } } } // class end?>
demo.php
<?phprequire 'HtmlEntitie.class.php';$str = '<p>更多资讯可关注本人微信号:fdipzone-idea</p><p><img src="/static/imghwm/default1.png" data-src="https://img-blog.csdn.net/20141224160911852" class="lazy" border="0" style="max-width:90%" style="max-width:90%" title="破晓领域" alt="PHP implements a class for converting HTML entity numbers and non-ASCII strings to each other" ></p><p>您的支持是我最大的动力,谢谢!</p>';// 字符串转为HTML实体编号$cstr = HtmlEntitie::encode($str);echo '字符串转为HTML实体编号'.PHP_EOL;echo $cstr.PHP_EOL.PHP_EOL;// HTML实体编号转为字符串echo 'HTML实体编号转为字符串'.PHP_EOL;echo HtmlEntitie::decode($cstr);?>
Output:
字符串转为HTML实体编号<p>更多资讯可关注本人微信号:fdipzone-idea</p><p><img src="/static/imghwm/default1.png" data-src="https://img-blog.csdn.net/20141224160911852" class="lazy" alt="PHP implements a class for converting HTML entity numbers and non-ASCII strings to each other" ></p><p>您的支持是我最大的动力,谢谢!</p>HTML实体编号转为字符串<p>更多资讯可关注本人微信号:fdipzone-idea</p><p><img src="/static/imghwm/default1.png" data-src="https://img-blog.csdn.net/20141224160911852" class="lazy" alt="PHP implements a class for converting HTML entity numbers and non-ASCII strings to each other" ></p><p>您的支持是我最大的动力,谢谢!</p>
Both of them can be displayed normally in the browser, as shown below:
This article explains how to convert HTML entity numbers and non-ASCII strings in PHP Class-related knowledge, please pay attention to the php Chinese website for more related content.
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The above is the detailed content of PHP implements a class for converting HTML entity numbers and non-ASCII strings to each other. For more information, please follow other related articles on the PHP Chinese website!

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。

在PHP中,可以利用implode()函数的第一个参数来设置没有分隔符,该函数的第一个参数用于规定数组元素之间放置的内容,默认是空字符串,也可将第一个参数设置为空,语法为“implode(数组)”或者“implode("",数组)”。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。


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