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<?php $A = "µPhysik I~1µ"; $Ar = explode("µµ", mb_substr($A, 1, -1, "UTF-8")); print_r($Ar); $A = count($Ar) > 0 ? "µ".implode("µµ", $Ar)."µ" : ""; print_r($A); $Ar = explode("µµ", mb_substr($A, 1, -1, "UTF-8")); print_r($Ar); print_r(explode("~", $Ar[0]));
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => Physik I~1 ) µPhysik I~1µArray ( [0] => Physik I~1 ) Array ( [0] => Physik I [1] => 1 )

preferences:
190.68 ms | 406 KiB | 310 Q