php preg_replace 帮助 iframe src [英] php preg_replace help iframe src

问题描述

我创建了一个函数，可以为 youtube 嵌入代码设置高度、宽度和 wmode=transparent.现在 youtube 正在返回 iframe 代码.所以，我需要在 youtube src 的末尾附加?wmode=transparent".

I have created a function which will set height, width and wmode=transparent for youtube embed codes. Now youtube is returning iframe code. So, I need to append "?wmode=transparent" at the end of youtube src.

例如
原始代码:

For eg.
Original code :

<iframe title="YouTube 视频播放器" width="420" height="349" src="http://www.youtube.com/embed/aXNUL1-urg8" frameborder="0" allowfullscreen=""></iframe>

<iframe title="YouTube video player" width="420" height="349" src="http://www.youtube.com/embed/aXNUL1-urg8" frameborder="0" allowfullscreen=""></iframe>

我希望它被替换为:

<iframe title="YouTube 视频播放器" width=" mywidth" height=" myheight" src="http://www.youtube.com/嵌入/aXNUL1-urg8 ?wmode=transparent" frameborder="0" allowfullscreen=""></iframe>

<iframe title="YouTube video player" width=" mywidth" height=" myheight" src="http://www.youtube.com/embed/aXNUL1-urg8 ?wmode=transparent" frameborder="0" allowfullscreen=""></iframe>

替换高度和宽度有效，但替换 src 不起作用.

Replacing height and width is working, but replacing src does not work.

我正在使用下面的正则表达式

I am using below regex

$patterns[] = '/src="http:\/\/www.youtube.com\/embed\/[a-zA-Z0-9._-]"/';
$replacements[] = 'src="http://www.youtube.com/embed/${1}?wmode=transparent"';

$patterns[] = '/src="http:\/\/www.youtube.com\/embed\/[a-zA-Z0-9._-]"/';
$replacements[] = 'src="http://www.youtube.com/embed/${1}?wmode=transparent"';

下面是我的函数.

函数 SetHeightWidthVideo($markup,$w='200',$h='120'){//使其wmode =透明

function SetHeightWidthVideo($markup,$w='200',$h='120') { //to make it wmode = transparent

  $markup = str_replace('<embed ','<embed wmode="transparent" ',$markup);
  //$w = '200';
  //$h = '120';

  $patterns = array();
  $replacements = array();
  if( !empty($w) )
  {
      $patterns[] = '/width="([0-9]+)"/';
      $patterns[] = '/width:([0-9]+)/';

      $replacements[] = 'width="'.$w.'"';
      $replacements[] = 'width:'.$w;
  }

  if( !empty($h) )
  {
      $patterns[] = '/height="([0-9]+)"/';
      $patterns[] = '/height:([0-9]+)/';

      $replacements[] = 'height="'.$h.'"';
      $replacements[] = 'height:'.$h;
  }



  $patterns[] = '/src="http:\/\/www\.youtube\.com\/embed\/[a-zA-Z0-9._-]"/';
  $replacements[] = 'src="http://www.youtube.com/embed/${1}?wmode=transparent"';

  return preg_replace($patterns, $replacements, $markup);

}

请帮忙.提前致谢.

推荐答案

尝试:

$patterns[] = '/src="(.*?)"/';
$replacements[] = 'src="${1}?wmode=transparent"';

return preg_replace($patterns, $replacements, $markup);

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