Question

如何应用正则表达式仅过滤

[video src="http://duel.evotechaustin.com/wp-content/uploads/2010/09/kramer.m4v" width="480" height="360" id="b-test" class="player" ]

来自以下字符串

Is simply dummy text of the printing and typesetting industry. 
[video src="http://duel.evotechaustin.com/wp-content/uploads/2010/09/kramer.m4v"          width="480" height="360" id="b-test" class="player" ]
Lorem Ipsum has been the industry's standard dummy text ever since the 1500s.

或者没有使用正则表达式而且Dom无论如何都要获得相同的

Answer 1

这是一个短代码，您可以轻松使用WordPress Shortcode API来处理这些短代码：

function video_shortcode( $atts, $content = null ) {
  // do whatever you want to to
}
add_shortcode('video', 'video_shortcode');

在$atts数组中，您将获得视频短代码中所有属性的列表：

array(
    "src" => "http://duel.evotechaustin.com/wp-content/uploads/2010/09/kramer.m4v",
    "width" => "480",
    "height" => "360",
    "id" => "b-test",
    "class" => "player"
)

Answer 2

preg_match("/\[video[^\]]+\]/i", $subject, $matches);

$matches[0]包含

[video src="http://duel.evotechaustin.com/wp-content/uploads/2010/09/kramer.m4v" width="480" height="360" id="b-test" class="player"]

Answer 3

使用substring和indexOf

例如，

htmlString = document.getElementById('div').innerHtml();
startIndex = htmlString.indexOf("[video");
endIndex = htmlString.indexOf("]", startIndex);
output = htmlString.substring(startIndex, endIndex);

如何应用正则表达式来过滤字符串

3 个答案: