What are Regular Expressions in PHP?
- They are a sequence of characters that define a search pattern.
- They are predefined patterns used to validate email addresses.
- They are PHP functions used to manipulate strings.
- They are numeric values used for mathematical calculations.
Regular expressions in PHP are a sequence of characters that define a search pattern. They are powerful tools used for pattern matching and manipulating strings. Regular expressions are based on a formal language and provide a concise and flexible way to search, extract, and manipulate text data. They can be used to validate inputs, perform string substitutions, extract data from strings, and more. Learn more: https://www.php.net/manual/en/book.regex.php
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