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<?php function f($f) { $f(['x' => 1]); echo $x; } f('extract');
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Fatal error: Uncaught Error: Cannot call extract() dynamically in /in/nLccg:4 Stack trace: #0 /in/nLccg(4): extract(Array) #1 /in/nLccg(8): f('extract') #2 {main} thrown in /in/nLccg on line 4
Process exited with code 255.
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Warning: Cannot call extract() dynamically in /in/nLccg on line 4 Notice: Undefined variable: x in /in/nLccg on line 5
Output for 7.3.32 - 7.3.33
Warning: Cannot call extract() dynamically in /in/nLccg on line 4
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.21, 7.0.0 - 7.0.20
1
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 '[', expecting ')' in /in/nLccg on line 4
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 '[', expecting ')' in /in/nLccg on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/nLccg on line 4
Process exited with code 255.

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