Question

我有一个代码可以预览mp3文件中的封面照片。它显示封面照片，但我想将图像导出为.jpg格式如何做到这一点？这是我的代码

require_once('getid3.php');

$getID3 = new getID3;
#$getID3->option_tag_id3v2 = true;
$getID3->analyze("Daayre.mp3");

if (isset($getID3->info['id3v2']['APIC'][0]['data'])) {
    $cover = $getID3->info['id3v2']['APIC'][0]['data'];
} elseif (isset($getID3->info['id3v2']['PIC'][0]['data'])) {
    $cover = $getID3->info['id3v2']['PIC'][0]['data'];
} else {
    $cover = null;
}

if (isset($getID3->info['id3v2']['APIC'][0]['image_mime'])) {
    $mimetype = $getID3->info['id3v2']['APIC'][0]['image_mime'];
} else {
    $mimetype = 'image/jpeg'; // or null; depends on your needs
}

if (!is_null($cover)) {
    header("Content-Type: ".$mimetype);
    if (isset($getID3->info['id3v2']['APIC'][0]['image_bytes'])) {
        header("Content-Length: ".$getID3->info['id3v2']['APIC'][0]['image_bytes']);
    }

    echo($cover);
}

如果我写<img src="<?php echo $cover; ?>"/>，那么它会显示图片。我想导出图片。怎么做？

Answer 1

$cover内存储了什么？好像你应该只能将$cover写入文件。试试file_put_contents，例如：

//If $cover is not a stream or string of data, you may need to make it one.
//For example, using fopen or another method depending on what $cover is
$filename = "somefilename.jpg";
file_put_contents($filename, $cover);

有关file_put_contents here的更多信息。它还取决于“出口”的含义。您是要将文件发送给用户还是仅将文件存储在计算机/服务器上？

MP3封面照片导出为JPG格式

1 个答案: