Example of how to convert an ISO date to a timestamp in PHP. It introduces the strtotime() function, which is a powerful tool for parsing textual datetime descriptions. By following the step-by-step instructions and code snippet provided, developers can easily convert ISO dates in the format 'YYYY-MM-DDTHH:MM:SSZ' into Unix timestamps. The guide also addresses considerations such as timezones, allowing users to adapt the conversion process to their specific needs. With this knowledge, developers can efficiently handle date and time calculations or manipulate timestamps in PHP applications.