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<?php $string = html_entity_decode('&auml;&uuml;uu', ENT_COMPAT, 'iSO-8859-1'); echo preg_replace('#(&\#*\w+)[\x00-\x20]+;#u',"$1;",$string); echo "\n"; $string = 'ss'; echo preg_replace('#(&\#*\w+)[\x00-\x20]+;#u',"$1;",$string);
Output for 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 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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
ss
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
�uu ss
Output for 4.3.0 - 4.3.1

Process exited with code 139.
preferences:
222.31 ms | 401 KiB | 356 Q