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run code in 300+ PHP versions simultaneously
<?php $parts = []; var_dump(trim($parts[1]) ?? null);
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined array key 1 in /in/Sk5RI on line 5 Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /in/Sk5RI on line 5 string(0) ""
Output for 8.0.0 - 8.0.30
Warning: Undefined array key 1 in /in/Sk5RI on line 5 string(0) ""
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 1 in /in/Sk5RI on line 5 string(0) ""
Output for 7.3.32 - 7.3.33
string(0) ""
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Parse error: syntax error, unexpected '?' in /in/Sk5RI on line 5
Process exited with code 255.

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