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run code in 200+ php & hhvm versions
<?php $tests = array( "1...1", "2...2", "10...10", "(1.).(.1)", "1. . .1", "5.32..7", "3..(5.67)", "3. . 5.67", "3.14 . 1.41" ); foreach($tests as $test) { printf("%-12s = ", $test); eval("echo $test;"); echo "\n"; }
Output for 4.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.3.1
1...1 = 10.1 2...2 = 20.2 10...10 = 100.1 (1.).(.1) = 10.1 1. . .1 = 10.1 5.32..7 = 5.320.7 3..(5.67) = 35.67 3. . 5.67 = 35.67 3.14 . 1.41 = 3.141.41