douyou1857 2017-09-24 08:39
浏览 302
已采纳

从字符串PHP的开头到结尾删除特定字符

I have a Sting like this :

$content = "[video width="640" height="360" mp4="http://click.ir/wp-content/uploads/2017/09/Spinning_cylinder_shaped_elevator.mp4"][/video]"

I want to delete from '[video' to 'mp4="' ... is there any built-in function in PHP or solution to solve this problem.

the width and height are not static or defined in my Problem

  • 写回答

4条回答 默认 最新

  • dpk20361 2017-09-24 08:59
    关注

    I assume you want to get the URL. I would use regex to get the url out of it. The regex would be http[\S]*.mp4.

    In code this is:

    $string = '[video width="640" height="360" mp4="http://click.ir/wp-content/uploads/2017/09/Spinning_cylinder_shaped_elevator.mp4"][/video]"';
    // use regex to fetch the url
    preg_match("/http[\S]*\.mp4/", $string,  $matches);
    // get first match
    $url = $matches[0];
    
    // $url is http://click.ir/wp-content/uploads/2017/09/Spinning_cylinder_shaped_elevator.mp4
    

    There are bether and nicer regex for URL, but in your case this would work. Depending on your Incoming data, you can adjust your regex to get what you want.

    See preg_match docs: http://php.net/manual/en/function.preg-match.php

    Online Regex tester: https://www.regexpal.com/

    Lots of Regex infos: http://www.regular-expressions.info/

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(3条)

报告相同问题?

悬赏问题

  • ¥15 怎么制作一个人脸识别门禁系统
  • ¥20 大华dss监控平台网络关闭登不进去
  • ¥15 请使用蚁群算法解决下列问题,并给出我完整的代码
  • ¥20 关于php录入完成后,批量更新数据库
  • ¥15 请教往复密封润滑问题
  • ¥15 cocos creator发布ios包
  • ¥15 comsol压电材料数据
  • ¥35 用python实现除法算法中goldschmidt算法
  • ¥15 汇编代码转换成C代码
  • ¥15 除法算法中的归一化具体是怎么变的?