<?php
$email = "Hi John Doe,\n" .
"Here comes some more text.\n" .
"And even more, and more, and more text.\n" .
"Your user ID is: 1234\n" .
"Your activation ID is: 5678910\n" .
"Even more text comes here.";
$pattern = '/Hi (.*?),\n.*?user ID is: (\d+).*?activation ID is: (\d+)/s';
print("$m[1]\n$m[2]\n$m[3]");
?>
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