What are some alternative functions or approaches in PHP for extracting specific types of URLs from a string?

When extracting specific types of URLs from a string in PHP, one approach is to use regular expressions to match the URLs based on their patterns. This can be achieved using functions like preg_match_all() or preg_match() to extract URLs that match a certain format or domain. 

// Sample string containing URLs
$string = "Check out my website at https://www.example.com and my blog at http://blog.example.com";

// Regular expression to match URLs starting with http or https
$pattern = '/(https?:\/\/[^\s]+)/';

// Extract URLs from the string
preg_match_all($pattern, $string, $matches);

// Output the extracted URLs
foreach ($matches[0] as $url) {
    echo $url . "\n";
}

Keywords

Regular expressions preg_match_all parse_url filter_var strpos

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