How to remove a tag in php regular expression

php regular method to remove a tag: first create a PHP sample file; then use the regular expression "preg_replace('/([\s\S]*?<\ a="" >)/','',$str);" Just remove the a tag. *?>

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

php regular match all a tag, and delete the

Specific question:

The basic format is

I use /\< a href=\>[\s\S]{0,}\<\/a\>/, this can only match from the beginning of

preg_replace(&#39;/(<a.*?>[\s\S]*?<\/a>)/&#39;,&#39;&#39;,$str);

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