wordpress如何批量修改文章文字

function replace_text_wps($text){  
    $replace = array(  
        // '关键词' => '替换的关键词'  例如：
        &#39;wordpress&#39; => &#39;<a href="#">wordpress</a>&#39;,  
        &#39;excerpt&#39; => &#39;<a href="#">excerpt</a>&#39;,  
        &#39;function&#39; => &#39;<a href="#">function</a>&#39;  
    );  
    $text = str_replace(array_keys($replace), $replace, $text);  
    return $text;  
}  
  
add_filter(&#39;the_content&#39;, &#39;replace_text_wps&#39;);  
add_filter(&#39;the_excerpt&#39;, &#39;replace_text_wps&#39;);