PHP：随机加载3个html片段中的一个 [英] PHP: load one of 3 html snippets randomly

问题描述

我想在页面加载时随机加载三个视频中的一个...

p>

 < video loop autoplay class =StretchtoFit> 
< source src =assets / videos / cloud.mp4type =video / mp4> 
< source src =assets / videos / cloud.oggtype =video / ogg> 
< source src =assets / videos / cloud.webmtype =video / webm> 
< / video> 
< video loop autoplay class =StretchtoFit> 
< source src =assets / videos / bath.mp4type =video / mp4> 
< source src =assets / videos / bath.oggtype =video / ogg> 
< source src =assets / videos / bath.webmtype =video / webm> 
< / video> 
< video loop autoplay class =StretchtoFit> 
< source src =assets / videos / train.mp4type =video / mp4> 
< source src =assets / videos / train.oggtype =video / ogg> 
< source src =assets / videos / train.webmtype =video / webm> 
< / video> 
  

该网页是基于php的。是否有任何简单的方法可以随意使用三个标签中的一个，并且不会加载其他两个？

你会怎么做？

解决方案

PHP：

  $ videos = array （'云'，'洗澡'，'火车'）; 
 $ i = rand（0，count（$ videos） -  1）; //介于0到$ videos之间的计数减去1 
  

HTML：

 < video loop autoplay class =StretchtoFit> 
< source src =assets / videos /<？= $ videos [$ i];？> .mp4type =video / mp4> 
< source src =assets / videos /<？= $ videos [$ i];？> .oggtype =video / ogg> 
< source src =assets / videos /<？= $ videos [$ i];？> .webmtype =video / webm> 
< / video> 
  

我使用短手标记进行回显（<？php echo ），<？= 。请确保在您的php.ini中启用了 short_open_tag 。当然，如果不起作用，你很快就会发现它。

probably a simple thing but I can't think of an easy and good solution …

I want to load one of three videos randomly on page load …

  <video loop autoplay class="StretchtoFit">
    <source src="assets/videos/cloud.mp4" type="video/mp4">
    <source src="assets/videos/cloud.ogg" type="video/ogg">
    <source src="assets/videos/cloud.webm" type="video/webm">
  </video>
  <video loop autoplay class="StretchtoFit">
    <source src="assets/videos/bath.mp4" type="video/mp4">
    <source src="assets/videos/bath.ogg" type="video/ogg">
    <source src="assets/videos/bath.webm" type="video/webm">
  </video>
  <video loop autoplay class="StretchtoFit">
    <source src="assets/videos/train.mp4" type="video/mp4">
    <source src="assets/videos/train.ogg" type="video/ogg">
    <source src="assets/videos/train.webm" type="video/webm">
  </video>

The webpage is php-based. Is there any easy way to use a one of the three tags on random and don't load the other two?

How would you do that?

解决方案

PHP:

$videos = array('cloud', 'bath', 'train');
$i = rand(0, count($videos) - 1); // between 0 and $videos count minus 1

HTML:

<video loop autoplay class="StretchtoFit">
 <source src="assets/videos/<?= $videos[$i]; ?>.mp4" type="video/mp4">
 <source src="assets/videos/<?= $videos[$i]; ?>.ogg" type="video/ogg">
 <source src="assets/videos/<?= $videos[$i]; ?>.webm" type="video/webm">
</video>

I'm using the short hand tag for echoing (<?php echo), <?=. Please make sure short_open_tag is enabled in your php.ini. Of course, you'll find out soon enough if it doesn't work.

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