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<?php $data = ['name' => 'Lorenzo']; $name = $data[’name’] ?? "Default Name"; echo $name; // equivalente a $name = isset($data[’name’]) ? $data[’name’] : "Default Name"; echo $name;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Fatal error: Uncaught Error: Undefined constant "’name’" in /in/SnCQY:4 Stack trace: #0 {main} thrown in /in/SnCQY on line 4
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant ’name’ - assumed '’name’' (this will throw an Error in a future version of PHP) in /in/SnCQY on line 4 Default Name Warning: Use of undefined constant ’name’ - assumed '’name’' (this will throw an Error in a future version of PHP) in /in/SnCQY on line 9 Default Name
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Use of undefined constant ’name’ - assumed '’name’' in /in/SnCQY on line 4 Default Name Notice: Use of undefined constant ’name’ - assumed '’name’' in /in/SnCQY on line 9 Default Name
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/SnCQY on line 4
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, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/SnCQY on line 2
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/SnCQY on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/SnCQY on line 2
Process exited with code 255.

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