How to remove html tags using php regular expressions
php正则表达式去掉html标签的方法:首先创建一个PHP示例文件;然后通过正则表达式“preg_replace('/\s(?!src)[a-zA-Z]+=[\'\"]{1}[^\'\"]+[\'\"]{1}/iu',);”实现去除。
本文操作环境:windows7系统、PHP7.1版,DELL G3电脑
php正则表达式怎么去掉html标签?
过滤html标签在php中可以有内置的函数了,但它过滤的太干净了,我们就整理了一下些利用正则来过滤指定html标签的例子,具体如下所示。
采集的时候有时候需要过滤掉多余的标签属性,比如 img标签过滤掉除了src属性之外的所有属性例如删除titile alt等属性以及一些脚的onclick属性等。
例如
过滤除了src之外的所有属性:
代码如下:
$str= preg_replace('/\s(?!src)[a-zA-Z]+=[\'\"]{1}[^\'\"]+[\'\"]{1}/iu',' $str);
上面的实例代码是过滤掉除了src属性外的所有标签属性.
过滤设置过滤除了alt和src之外的所有属性
代码如下:
$str = preg_replace('/\s(?!(src|alt))[a-zA-Z]+=[^\s]*/iu',' ', $str);
过滤所有html标签的属性的正则表达式:
代码如下:
$str = preg_replace("/<([a-z]+)[^>]*>/i","",$str );
只过滤alt属性的正则表达式:
代码如下:
(\s)alt=[^\s]*
过滤所有html标签的属性的正则表达式:
代码如下:
$search = array ("'<script[^>]*?>.*?</script>'si", // 去掉 javascript "'<[\/\!]*?[^<>]*?>'si", // 去掉 HTML 标记 "'([\r\n])[\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" ); // 作为 PHP 代码运行 $replace = array ("","","\\1","\"","&","<",">"," "); $html = preg_replace($search, $replace, $html);
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