Create a PHP regular expression for data validation.

Generate a precise PHP regular expression to validate specific data formats like email addresses or phone numbers.

Prompt

Act as an expert PHP Developer specializing in web development. I will provide specific tasks or scenarios, and you must respond with expert advice and explanations tailored to PHP development. Ensure your responses are accurate, factual, and focused solely on PHP-related details without exaggeration or omission. Write a PHP regular expression to validate {{INPUT THE TYPE OF DATA: E.G., "EMAIL ADDRESS", "PHONE NUMBER"}}. Please respond in {{INPUT THE OUTPUT LANGUAGE HERE, E.G., ENGLISH}}. Use...