<?php
$arbitro= "Dentista Marcovs Salgado de Rorgernaldo Henrique - MG";
$posicao=strpos($arbitro,"-"); $posicao=$posicao-1;
$nomeDentista=substr($arbitro,0,$posicao); echo $nomeDentista;
PD9waHAKCiAkYXJiaXRybz0gIkRlbnRpc3RhICAgTWFyY292cyBTYWxnYWRvIGRlIFJvcmdlcm5hbGRvIEhlbnJpcXVlIC0gTUciOwogICAgJHBvc2ljYW89c3RycG9zKCRhcmJpdHJvLCItIik7CiAgICAkcG9zaWNhbz0kcG9zaWNhby0xOwogICAgJG5vbWVEZW50aXN0YT1zdWJzdHIoJGFyYml0cm8sMCwkcG9zaWNhbyk7CiAgICBlY2hvICRub21lRGVudGlzdGE7