1Number literals 2----- 3<?php 4 50; 6+0; 7-0; 80.0; 9-0.0; 1042; 11-42; 1242.0; 13-42.0; 1442.5; 15-42.5; 161e42; 17-1e42; 181e1000; 19-1e1000; 20----- 210; 22+0; 23-0; 240.0; 25-0.0; 2642; 27-42; 2842.0; 29-42.0; 3042.5; 31-42.5; 321.0E+42; 33-1.0E+42; 341.0E+1000; 35-1.0E+1000; 36