Multiple keyword replacement in PHP string

<meta charset="UTF-8">
<?php
$str="Who asks you to read, the fragrance floats when the water falls. http://onestopweb.iteye.com/";//Define the original string
//replacing a single keyword
$keyword="onestopweb";//Specify the keyword to be replaced
echo str_replace($keyword,"<font color=red><b>$keyword</b></font>",$str).'<br>';//加粗加颜色
//If it is a set of keywords, you can loop to determine whether it exists, and the replacement will start when the keyword exists.
$keywords = array('chaoyi'=>'<a href="chaoyi">chaoyi</a>','阅'=>'<a href="阅">阅</a>','onestopweb'=>'<a href="onestopweb">onestopweb</a>',);
foreach($keywords as $k=>$v){
	//strpos cannot judge Chinese
	if(strstr($str,$k)){
		$ str = str_replace ($ k, $ v, $ str);
	}
}
echo $str;

 

Effect picture: