使用 PHP 在浏览器中打开 PDF
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open PDF in browser with PHP
提问by user583311
I am doing:
我在做:
header('Content-type: application/pdf');
header('Content-Disposition: inline; filename="the.pdf"');
header('Content-Length: ' . filesize($file));
@readfile($file);
and it works fine. The PDF opens in the browser.
它工作正常。PDF 在浏览器中打开。
Can I do an if-then-else before? I tried and I get raw PDF
我可以先做 if-then-else 吗?我试过了,我得到了原始 PDF
%PDF-1.2 9 0 obj << /Type/Font /Subtype/Type1 /Name/F1 /FontDescriptor 8 0
Why is the if-then-else changing the headers?
为什么 if-then-else 更改标题?
thanks.
谢谢。
采纳答案by Michael
It would be helpful if you posted exactly what is your if-then-else code. My guess is you have some whitespace output before the headers are outputted.
如果您准确发布了 if-then-else 代码,那将会很有帮助。我的猜测是在输出标题之前你有一些空白输出。
回答by John Flatness
Make sure the code in your if-then-else block isn't causing anything to be output to the page.
确保 if-then-else 块中的代码不会导致任何内容输出到页面。
Once something's been output, calls to header()
won't work anymore.
一旦输出了某些东西,对 的调用header()
将不再起作用。