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<?php function compare_behaviour($arg1, $arg2) { static $test = 0; ++$test; $res1 = ($arg1 ?: $arg2); $res2 = ($arg1 or $arg2); echo "$test\n========\n"; if( $res1 !== $res2 ){ var_dump($arg1, $arg2, $res1, $res2); } } compare_behaviour(false, true); compare_behaviour(0, 1); compare_behaviour(0, 0); compare_behaviour(NULL, []);
Output for git.master, git.master_jit, rfc.property-hooks
1 ======== 2 ======== int(0) int(1) int(1) bool(true) 3 ======== int(0) int(0) int(0) bool(false) 4 ======== NULL array(0) { } array(0) { } bool(false)

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