Summary of some methods of converting HTML into text with PHP_PHP Tutorial

Converting HTML to text in PHP provides the built-in function strip_tags, but sometimes this function is not enough. Here is a summary of some user-defined functions for your reference.

The most commonly used php function strip_tags

The code is as follows

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代码如下	复制代码
$mystr=<< 此处省略几十行HTML代码^_^ SATO; $str=strip_tags($mystr); //到这里就已经达到我的HTML转为TXT文本的目的了，哈哈，使用这个函数真方便 //下面是插件的一些切词等操作，这里就不多说了 ?>

$mystr=<< Dozens of lines of HTML code are omitted here^_^
SATO;
$str=strip_tags($mystr);
//At this point, I have achieved my purpose of converting HTML to TXT text, haha, it is so convenient to use this function
//The following are some word segmentation and other operations of the plug-in, so I won’t go into details here
?>

Custom function

The code is as follows

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代码如下

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// $document 应包含一个 HTML 文档。 // 本例将去掉 HTML 标记，javascript 代码 // 和空白字符。还会将一些通用的 // HTML 实体转换成相应的文本。 $search = array ("']*?>.*?'si",  // 去掉 javascript                  "'<[/!]*?[^<>]*?>'si",           // 去掉 HTML 标记                  "'([rn])[s]+'",                 // 去掉空白字符                  "'&(quot|#34);'i",                 // 替换 HTML 实体                  "'&(amp|#38);'i",                  "'&(lt|#60);'i",                  "'&(gt|#62);'i",                  "'&(nbsp|#160);'i",                  "'&(iexcl|#161);'i",                  "'&(cent|#162);'i",                  "'&(pound|#163);'i",                  "'&(copy|#169);'i",                  "'&#(d+);'e");                    // 作为 PHP 代码运行 $replace = array ("",                   "",                   "1",                   """,                   "&",                   "<", ">",                   " ",                   chr(161),                   chr(162),                   chr(163),                   chr(169),                   "chr(1)"); $text = preg_replace ($search, $replace, $document); ?>

// $document should contain an HTML document. <🎜> // This example will remove HTML tags and javascript code <🎜> // and whitespace characters. We will also add some common <🎜> // HTML entities are converted into corresponding text. <🎜> <🎜>$search = array ("']*?>.*?'si", // Remove javascript "'<[/!]*?[^<>]*?>'si", "'<[/!]*?[^<>]*?>'si", "'                "'([rn])[s]+'",                                                                         "'&(quot|#34);'i",                                   "'&(quot|#34);'i",                                                            "'&(amp|#38);'i", "'&(lt|#60);'i", "'&(gt|#62);'i", "'&(nbsp|#160);'i", "'&(iexcl|#161);'i", "'&(cent|#162);'i", "'&(pound|#163);'i", "'&(copy|#169);'i", "'(d+);'e"); "'(d+);'e"); // Run as PHP code $replace = array ("", "", "1", """, "&", "<",<🎜> ">", " ", chr(161), chr(162), chr(163), chr(169), "chr(1)"); $text = preg_replace ($search, $replace, $document); ?>

Later I saw a method written in PHP from the Internet. This method can also be used to convert HTML to TXT text. I personally think it is quite practical. I will share it here. The code is as follows:

代码如下

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function HtmlToText($str){   $str=preg_replace("/||/isU","",$str);//去除CSS样式、JS脚本、HTML注释   $alltext="";//用于保存TXT文本的变量   $start=1;//用于检测<左、>右标签的控制开关   for($i=0;$i if(($start==0)&&($str[$i]==">")){//如果检测到>右标签，则使用$start=1;开启截取功能       $start=1;     }else if($start==1){//截取功能       if($str[$i]=="<"){//如果字符是<左标签，则使用|替换         $start=0;         $alltext.="|";       }else if(ord($str[$i])>31){//如果字符是ASCII大于31的有效字符，则将字符添加到$alltext变量中         $alltext.=$str[$i];       }     } } //下方是去除空格和一些特殊字符的操作 $alltext = str_replace("　"," ",$alltext); $alltext = preg_replace("/&([^;&]*)(;|&)/","",$alltext); $alltext = preg_replace("/[ ]+/s"," ",$alltext); return $alltext; }

使用上面这个方法也可以实现将简答的HTML代码转换为TXT文本。

例3

代码如下	复制代码
function html2text($str,$encode = 'GB2312') {   $str = preg_replace("/