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<?php error_reporting(E_ALL); echo $_GET['aaa']; $user = $_GET['xxx'] ?? 'nobody'; var_dump($user); $null = ''; var_dump($null??'haha'); $arr = ['a' => 1]; echo $arr[0]; var_dump($arr['b'] ?? 'bbbb');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined array key "aaa" in /in/lSEef on line 3 string(6) "nobody" string(0) "" Warning: Undefined array key 0 in /in/lSEef on line 9 string(4) "bbbb"
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 Warning: Undefined array key "aaa" in /in/lSEef on line 3 string(6) "nobody" string(0) "" Warning: Undefined array key 0 in /in/lSEef on line 9 string(4) "bbbb"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Notice: Undefined index: aaa in /in/lSEef on line 3 string(6) "nobody" string(0) "" Notice: Undefined offset: 0 in /in/lSEef on line 9 string(4) "bbbb"
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/lSEef on line 4
Process exited with code 255.
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