baidu_15707443的专栏

通过mb_str_split —给定一个多字节字符串，返回其字符数组 $arr=mb_str_split($string); $pos=mb_strpos($string,"a"); $arr[$pos]="*"; $string=join('',$arr);

$url = 'http://www.google.com.hk'; $opts = array( 'http' => array( 'timeout' => 3, ) ); $context = stream_context_create($opts); $n = 0; while ($n < 5 && ($result = file_get