Linux 下 PHP 无法 echo 图片
这串代码,在 linux 环境下无法显示图片
<code>$img_url = $_GET['img']; $content = file_get_contents($img_url); header('Content-Type: image/jpeg; charset=UTF-8'); echo $content; </code>
linux 环境的访问地址 demo (存在问题)
mac 环境的访问地址 demo (正常)
win 关机了就不贴了 (正常)
我在这串代码之前添加过 error_reporting(E_ALL);ini_set("display_errors","On");die;
未发现错误,
检查了 linux 环境下的 allow-url-fopen
为 on
,并且可以 print_r
出来,内容相同如下:
<code>����JFIF��;CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90 ��C ��C ��j�"�� ���}!1AQa"q2���#B��R��$3br� %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������� ���w!1AQaq"2�B���� #3R�br� $4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������?�����2���}x����bi��f(�IQ߆���]/�?</code>
这串字符没太多意义,截取了头部一段贴了上来。
同时添加一个 phpinfo 供大家查看
回复内容:
这串代码,在 linux 环境下无法显示图片
<code>$img_url = $_GET['img']; $content = file_get_contents($img_url); header('Content-Type: image/jpeg; charset=UTF-8'); echo $content; </code>
linux 环境的访问地址 demo (存在问题)
mac 环境的访问地址 demo (正常)
win 关机了就不贴了 (正常)
我在这串代码之前添加过 error_reporting(E_ALL);ini_set("display_errors","On");die;
未发现错误,
检查了 linux 环境下的 allow-url-fopen
为 on
,并且可以 print_r
出来,内容相同如下:
<code>����JFIF��;CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 90 ��C ��C ��j�"�� ���}!1AQa"q2���#B��R��$3br� %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������� ���w!1AQaq"2�B���� #3R�br� $4�%�&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz��������������������������������������������������������������������������?�����2���}x����bi��f(�IQ߆���]/�?</code>
这串字符没太多意义,截取了头部一段贴了上来。
同时添加一个 phpinfo 供大家查看
这个问题于昨夜三点解决,在代码输出之前添加 ob_clean
即可,在 Thinkphp 的调试模式下会有意外输出,但是这个输出是什么尚未找到,而且这个意外输出只有 linux 下才会有,怀疑是框架问题和系统配置之间有什么问题。
正常来说, 应该可以输出图片的。 windows 下,我测试时没有问题。 thinkphp 可能某些应用到ob 缓存了,清理下吧,不然直接在浏览器输出 二进制流可能有问题。
少扩展
freetype,jpegsrc,libpng装上试试
header('Content-Type: image/jpeg; charset=UTF-8');
这行去掉charset=UTF-8
header('Content-Type: image/jpeg');
看了一下,lz的相应头里是 Content-Type: image/jpg
,应该是 Content-Type: image/jpeg
。

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