My friend just had this stamped in his passport at airport immigration in Phuket. He's flying to Singapore for a few days then returning. But unsure about the wording. Is this a standard exit stamp or anything to be concerned about? I think he intends on coming back for less than 30 days in a few days time. Thanks in advance!
TLDR : Answer Summary
The stamp your friend received at Phuket airport immigration is not a standard exit stamp, but rather an 'extension denied' stamp. This indicates that he was previously granted a visa or extension, which has now expired, requiring him to leave Thailand immediately. If he plans to return within 30 days, he should be cautious as this could affect future entries depending on the type of visa he intends to apply for.