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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 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
1 ======== bool(false) bool(true) bool(true) bool(true) 2 ======== 3 ======== 4 ========
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 1 ======== bool(false) bool(true) bool(true) bool(true) 2 ======== 3 ======== 4 ========
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/nlrN0 on line 19
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected ':' in /in/nlrN0 on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':' in /in/nlrN0 on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/nlrN0 on line 7
Process exited with code 255.
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264.22 ms | 401 KiB | 458 Q