What is the best approach to extract a nested URL from a given URL in PHP, especially when the parameter name may vary?

When extracting a nested URL from a given URL in PHP, especially when the parameter name may vary, one approach is to use regular expressions to search for the nested URL pattern within the given URL. By defining a regular expression pattern that matches the nested URL structure, we can extract the desired nested URL from the given URL string. This approach allows for flexibility in handling different parameter names that may contain the nested URL. 

$url = "https://example.com/page?param1=value1&nested_url=https://nestedurl.com/page&param2=value2";

preg_match('/nested_url=([^&]+)/', $url, $matches);
$nested_url = isset($matches[1]) ? $matches[1] : null;

echo $nested_url;

Keywords

PHP URL parsing regular expressions preg_match nested URL

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