需要使用php从包含html实体和元素的字符串中提取纯文本

我需要输出为纯文本：

东北部的居民发现，布兰福德大厅已经成为开始高增长职业生涯的最快、最有效的方式之一

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请帮助我更正preg_replace regex？

PHP有一些内置函数，应该更方便：

$string = "<h2> <div class="OutlineElement Ltr SCX116040423" style="margin: 0px; padding: 0px; font-family: 'Segoe UI', Tahoma, Verdana, sans-serif; font-size: 8px; font-weight: normal;"> <p class="MsoNormal">Residents of the northeast are discovering that Branford Hall has become one of the fastest and most effective ways to begin a high growth career.<o:p>"

$string = preg_replace("/&#?[a-z0-9]+;/i","",$string);

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PHP有一些内置函数，应该更方便：

$string = "<h2> <div class="OutlineElement Ltr SCX116040423" style="margin: 0px; padding: 0px; font-family: 'Segoe UI', Tahoma, Verdana, sans-serif; font-size: 8px; font-weight: normal;"> <p class="MsoNormal">Residents of the northeast are discovering that Branford Hall has become one of the fastest and most effective ways to begin a high growth career.<o:p>"

$string = preg_replace("/&#?[a-z0-9]+;/i","",$string);