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<?php var_dump(strtolower(null[0]));
Output for 8.3.0 - 8.3.4
Warning: Trying to access array offset on null in /in/v44vG on line 3 Deprecated: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/v44vG on line 3 string(0) ""
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17
Warning: Trying to access array offset on value of type null in /in/v44vG on line 3 Deprecated: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /in/v44vG on line 3 string(0) ""
Output for 8.0.0 - 8.0.30
Warning: Trying to access array offset on value of type null in /in/v44vG on line 3 string(0) ""
Output for 7.4.0 - 7.4.33
Notice: Trying to access array offset on value of type null in /in/v44vG on line 3 string(0) ""
Output for 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
string(0) ""
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, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35
Parse error: syntax error, unexpected '[' in /in/v44vG on line 3
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/v44vG on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/v44vG on line 3
Process exited with code 255.

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