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<?php var_dump(['foo' => 1] + ['foo' => 2]); var_dump(array_merge(array('foo' => 1), array('foot' => 2)));
Output for 5.4.0 - 7.1.0
array(1) { ["foo"]=> int(1) } array(2) { ["foo"]=> int(1) ["foot"]=> int(2) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/o5An6 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[', expecting ')' in /in/o5An6 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/o5An6 on line 3
Process exited with code 255.