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run code in 300+ PHP versions simultaneously
<?php $DATA = '_GET'; var_dump(${$DATA}); function test() { $DATA = '_GET'; var_dump(${$DATA}); } test();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(0) { } Warning: Undefined variable $_GET in /in/39T8b on line 7 NULL
Output for 5.0.4 - 5.0.5, 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, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
array(0) { } Notice: Undefined variable: _GET in /in/39T8b on line 7 NULL
Output for 7.3.32 - 7.3.33, 7.4.26
array(0) { } NULL
Output for 7.1.10

Process exited with code 137.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
array(0) { } Notice: Undefined variable: _GET in /in/39T8b on line 7 NULL
Output for 4.3.0 - 4.3.1
array(1) { ["/in/39T8b"]=> string(0) "" } Notice: Undefined variable: _GET in /in/39T8b on line 7 NULL
preferences:
202.98 ms | 401 KiB | 313 Q