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<?php $str = 'โ‚ฌ๐Ÿ˜„A๐ˆยข'; $r = preg_match_all('|[\x{10000}-\x{10FFFF}]|u', $str, $matches); var_dump($matches[0]);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(2) { [0]=> string(4) "๐Ÿ˜„" [1]=> string(4) "๐ˆ" }
preferences:
96.41 ms | 407 KiB | 5 Q