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<?php $foo = ['bar'=>0, 'baz'=>1]; echo serialize($foo);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.29, 5.5.31 - 5.5.38, 5.6.0, 5.6.2 - 5.6.11, 5.6.13 - 5.6.14, 5.6.16 - 5.6.18, 5.6.21 - 5.6.24, 5.6.26 - 5.6.31, 5.6.35 - 5.6.40, 7.0.1, 7.0.4 - 7.0.9, 7.0.16 - 7.0.33, 7.1.1, 7.1.3 - 7.1.16, 7.1.21 - 7.1.33, 7.2.0 - 7.2.8, 7.2.10 - 7.2.18, 7.2.20 - 7.2.26, 7.3.0 - 7.3.13, 7.4.0 - 7.4.1, 8.1.24 - 8.1.28, 8.2.11 - 8.2.18, 8.3.0 - 8.3.6
a:2:{s:3:"bar";i:0;s:3:"baz";i:1;}
Output for 5.5.30, 5.6.1, 5.6.12, 5.6.15, 5.6.19 - 5.6.20, 5.6.25, 5.6.32 - 5.6.33, 7.0.0, 7.0.2 - 7.0.3, 7.0.10 - 7.0.15, 7.1.0, 7.1.2, 7.1.17 - 7.1.20, 7.2.9, 7.2.19

Process exited with code 137.
Output for 5.6.34
a:2:{s:3:"bar";i:0;s:3:"baz";i:1;}
Process exited with code 137.
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/GcKHq 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/GcKHq on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GcKHq on line 3
Process exited with code 255.

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178.41 ms | 401 KiB | 345 Q