今天遇到一个问题 需要只替换字符串一次,而不是全部替换
方法一:
$str = "abcdefgabchijklmn";
$needle = "abc";
str,"123",strpos(needle),strlen($needle));
var_dump($result);
方法二
$str = "abcdefgabchijklmn";
$change='sds';
change,$str ,1);正则
演示站后台:demo25.crmeb.net 账号:demo 密码:crmeb.com