Question

我想在我的网站上显示视频。在文件中我有网址（分隔符|）我不能这样做：从.txt中的文本做数组。从数组中获取4个随机网址。

youtube_vids.txt

https://www.youtube.com/embed?v=oavMtUWDBTM|
https://www.youtube.com/embed?v=dQw4w9WgXcQ|
https://www.youtube.com/embed?v=djV11xsamQ|
https://www.youtube.com/embed?v=Tj75ArXbc914|
https://www.youtube.com/embed?v=9jK-NcRmVcw|
https://www.youtube.com/embed?v=n4RjJKhq5ho|
https://www.youtube.com/embed?v=6Ejga4kJUts|

我在这里停了下来：

$vid_list = file('youtube_vids.txt');

任何人都可以帮助我吗？非常感谢！

Answer 1

file（）函数用换行符分隔数组，所以|分隔符未使用，必须进行修剪：

$vid_list = file('youtube_vids.txt');
shuffle($vid_list);
for ($i = 0; $i < 4; $i++) {
    // Trim any newline characters
    $url = trim($vid_list[$i]);
    // Then trim the 'separator'
    $url = trim($url, '|');
    echo $url . "<br/>";
}

Answer 2

解决方案是：

首先使用file()
然后使用array_rand()
最后explode()并从数组中提取网址

所以你的代码应该是这样的：

$lines = file('youtube_vids.txt');
$rand_array = array_rand($lines, 4);

$random_urls = array();
foreach ($rand_array as $line) {
    $random_urls[] = explode("|",$lines[$line])[0];
}

// display $random_urls array
echo "<pre>";
print_r($random_urls);
echo "</pre>";

Answer 3

$videoArray = file('youtube_vids.txt');
$randomIndexes = array_rand($videoArray, 4);
foreach ($randomIndexes as $index) {
    echo '<iframe width="420" height="315" src="'.preg_replace( "/\r|\n/", "", str_replace('|','',$videoArray[$index])).'"></iframe>';
}

将输出

<iframe width="420" height="315" src="https://www.youtube.com/embed?v=dQw4w9WgXcQ"></iframe>
<iframe width="420" height="315" src="https://www.youtube.com/embed?v=oavMtUWDBTM"></iframe>
<iframe width="420" height="315" src="https://www.youtube.com/embed?v=6Ejga4kJUts"></iframe>
<iframe width="420" height="315" src="https://www.youtube.com/embed?v=dQw4w9WgXcQ"></iframe>

Answer 4

$filename = "file.txt"; //Input Text File With Separators

if(file_exists($filename)) { //Check if file exists

    $myfile = fopen($filename, "r") or die("Unable to open file!"); //Reading file

    $fileData = fread($myfile,filesize($filename)); //Save file data in a variable

    $splitData = explode("|", $fileData); //Split file data using separators

    $randLinks = array_rand($splitData, 4); // Get 4 random indices from splitData array

   foreach($randLinks as $randLink) { // Foreach index
        echo $splitData[$randLink] . "<br>"; // Get url
    }

   fclose($myfile); //Don`t forget to close the file 
}

从文件到数组php

4 个答案: