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php将图片文件转换成二进制输出的方法_php技巧

May 16, 2016 pm 08:14 PM
php binary Image files Convert

本文实例讲述了php将图片文件转换成二进制输出的方法。分享给大家供大家参考。具体实现方法如下:

header( "Content-type: image/jpeg");
$PSize = filesize('1.jpg');
$picturedata = fread(fopen('1.jpg', "r"), $PSize);
echo $picturedata;

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就这么简单4行代码,就将图片以二进制流的形式输出到客户端了,和打开一张图片没有任何区别。

这里需要注意的是,发送的header要根据具体情况而定,不一定都是image/jpeg。JPG的就是image/jpeg,但PNG的就是image/png.不同类型的图片输出不同的头部。

希望本文所述对大家的php程序设计有所帮助。

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