Why Are My PDF Downloads Not Working in PHP?

Troubleshooting PHP Headers for PDF File Downloads

Encountering difficulties downloading PDF files upon user link clicks? This issue has been encountered and resolved previously. Let's investigate the problematic headers within PHP.

In the example provided, headers are set as follows:

<code class="php">$filename = './pdf/jobs/pdffile.pdf;

$url_download = BASE_URL . RELATIVE_PATH . $filename;

header("Content-type:application/pdf");
header("Content-Disposition:inline;filename='$filename\"");
readfile("downloaded.pdf");</code>

However, this approach seems to be ineffective. To address this issue, let's refer to Example 2 on the w3schools website:

<code class="php">header("Content-type:application/pdf");

// It will be called downloaded.pdf
header("Content-Disposition:attachment;filename=\"downloaded.pdf\"");

// The PDF source is in original.pdf
readfile("original.pdf");
?></code>

It's crucial to note that in PHP 4 and later, output buffering can be utilized to resolve the scenario where output has already been sent before a header is called.

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