php新版本废弃 preg_replace /e 修饰符

preg_replace(): The /e modifier is deprecated, use preg_replace_callback instead

preg_replace("/([A-Z])/e", "'_' . strtolower('\\1')", $str)

preg_replace_callback('/([A-Z])/',                      function ($matches) {                        return '_' . strtolower($matches[0]);                      },                      $str)

$patterns       = '/'.$begin.$parseTag.$n1.'\/(\s*?)'.$end.'/eis';$replacement    = "\$this->parseXmlTag('$tagLib','$tag','$1','')";$content        = preg_replace($patterns, $replacement,$content);

$that = $this;$patterns       = '/'.$begin.$parseTag.$n1.'\/(\s*?)'.$end.'/is';$content=preg_replace_callback($patterns, function($matches) use($tagLib,$tag,$that){    return $that->parseXmlTag($tagLib,$tag,$matches[1],'');},$content);