How can you validate a URL field in a PHP form?
- Using a regular expression
- Comparing the input to a list of known URLs
- Checking if the input starts with "http://" or "https://"
- All of the above
To validate a URL field in a PHP form, you can use multiple methods. One common approach is to use a regular expression to check if the input matches the pattern of a valid URL. Additionally, you can compare the input against a list of known URLs or simply check if it starts with the "http://" or "https://" prefix. Learn more: https://www.php.net/manual/en/filter.examples.validation.php
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