How to convert php images into binary streams

How to convert php images into binary streams: first create a PHP sample file; then get the temporary file name; finally use the "base64EncodeImage(strTmpName);" method to convert the image files into binary streams.

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer.

php converts images into binary streams

//获取临时文件名
$strTmpName = $_FILES['file']['tmp_name'];

//转成二进制流
$strData = base64EncodeImage(strTmpName );

//输出
<img src=&#39;$strData&#39;>

function base64EncodeImage($strTmpName)
{
    $base64Image = '';
    $imageInfo   = getimagesize($strTmpName);
    $imageData   = fread(fopen($strTmpName , 'r'), filesize($strTmpName));
    $base64Image = 'data:' . $imageInfo['mime'] . ';base64,' . chunk_split(base64_encode($imageData));
    return $base64Image;
}

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