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run code in 300+ PHP versions simultaneously
<?php var_dump(locale_get_default());
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.31, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(11) "en_US_POSIX"
Output for 7.3.32 - 7.3.33, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function locale_get_default() in /in/rSeXR:3 Stack trace: #0 {main} thrown in /in/rSeXR on line 3
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function locale_get_default() in /in/rSeXR on line 3
Process exited with code 255.

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