php正则实现替换alt的方法：1、创建一个PHP示例文件；2、获取需要替换的内容；3、通过“3ff66012414d143c4db21d46a3b5be17”正则实现替换即可。![How to replace alt with php regular expression]()
*?src=[\"|\'](.*?)[\"|\'].*?>
本文操作环境：windows7系统、PHP7.1版、DELL G3电脑
php正则怎么实现替换alt？
php正则表达式提取img alt/title标签并替换
有时我们需要对富文本编辑器中的img标签进行必要的处理以满足网站自身的需要，
比如：
根据站点关键词对页面内img的alt标签设定关键词，以下为提取并替换alt/title标签内容的正则：
$title = "需要替换的内容..." $pattern= "//"; $replace = '
'; $html = preg_replace($patter, $replace, $content);
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