Php 如何从类似MVC的URL确定文件类型

我想在Magento商店的产品视图页面中添加一个音频播放器，用于播放示例音频文件，因此我编辑了

Magento\u root/app/design/path/to/theme/template/downloadable/catalog/product/samples.phtml

<?php if ($this->hasSamples()): ?>
 <dl class="item-options">
    <dt><?php echo $this->getSamplesTitle() ?></dt>
    <?php $_samples = $this->getSamples() ?>
    <?php foreach ($_samples as $_sample): ?>
        <dd>
            <!--HTML5 Audio player-->
            <audio controls>
                <source src="<?php echo $this->getSampleUrl($_sample) ?>" type="audio/mpeg">
                Your browser does not support the audio element.
            </audio>
            <br/>
            <a href="<?php echo $this->getSampleUrl($_sample) ?>" <?php echo $this->getIsOpenInNewWindow() ? 'onclick="this.target=\'_blank\'"' : ''; ?>><?php echo $this->escapeHtml($_sample->getTitle()); ?></a>
        </dd>
    <?php endforeach; ?>
  </dl>
<?php endif; ?>

---

您可以尝试使用curl发送HEAD请求。对于HEAD请求，您只是获取标题，而不是正文（在您的情况下是音频文件）：

---

您可以尝试使用curl发送HEAD请求。对于HEAD请求，您只是获取标题，而不是正文（在您的情况下是音频文件）：

$sample_file = $this->getSampleUrl($_sample);
$type = getFileType($sample_file);
if(preg_match('audio-file-type-pattern',$type){ ?>
 <!--HTML5 Audio player-->
 <audio controls>
   <source src="<?php echo $sample_file ?>" type="<?php echo $type?>">
   Your browser does not support the audio element.
 </audio>
}

<?php

$url = 'http://domain.com/index.php/downloadable/download/sample/sample_id/1/';

$ch = curl_init();
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, 20);

// Only calling the head
curl_setopt($ch, CURLOPT_HEADER, true); // header will be at output
curl_setopt($ch, CURLOPT_NOBODY, true);


$content = curl_exec ($ch);
curl_close ($ch);


echo $content;

//Outputs:
HTTP/1.1 200 OK
Date: Fri, 01 Apr 2016 16:56:42 GMT
Server: Apache/2.4.12
Last-Modified: Wed, 07 Oct 2015 18:23:27 GMT
ETag: "8d416d3-8b77a-52187d7bc49d1"
Accept-Ranges: bytes
Content-Length: 571258
Content-Type: audio/mpeg

preg_match('/Content\-Type: ([\w\/]+)/', $content, $m);

echo print_r($m,1);

//Outputs:
Array
(
     [0] => Content-Type: audio/mpeg
     [1] => audio/mpeg
)