What is the significance of the 'Z' at the end of the time string in the context of UTC time conversion in PHP?

The 'Z' at the end of a time string in the context of UTC time conversion in PHP signifies that the time is in Coordinated Universal Time (UTC). When converting a time string to UTC in PHP, you need to include the 'Z' at the end to indicate that the time is in UTC. This ensures that the time is correctly interpreted and converted to the appropriate UTC timestamp. 

// Convert a time string to UTC timestamp
$timeString = '2022-01-01T12:00:00Z';
$utcTimestamp = strtotime($timeString);

echo $utcTimestamp; // Output: 1641052800

Keywords

UTC time time string PHP conversion 'Z'

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