How Can I Get the Final URL After Redirects When Using file_get_contents() in PHP?

File_Get_Contents: Unveiling the Final URL

Problem: While scraping content using file_get_contents(), you encounter redirects but desire to uncover the true URL.

Solution:

Although file_get_contents() generally handles redirects, if you explicitly need control, employ the following approach:

<code class="php">// Disable automatic redirect following
$context = stream_context_create([
    'http' => [
        'follow_location' => false
    ]
]);

// Retrieve the content with no redirects
$html = file_get_contents('http://www.example.com/', false, $context);

// Access the HTTP response headers to determine the actual URL
var_dump($http_response_header);</code>

By setting 'follow_location' to false, you prevent file_get_contents() from automatically following redirects. The response headers (available in $http_response_header) will contain the "Location" header, indicating the true URL after any redirects.

Tip: This approach is inspired by the solution provided in How do I ignore a moved-header with file_get_contents in PHP?

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