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<?php $purchaseSnapshot = ['ss' => 'rock']; var_dump($purchaseSnapshot['type'] ?? '');
Output for 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 - 8.2.17, 8.3.0 - 8.3.4
string(0) ""
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected '?' in /in/J8ehc on line 5
Process exited with code 255.

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