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<?php 0 === strpos('VeryStrangeThirdPartyLibraryName\\This\\Is\\A\\Very\\Long\\Namespace\\Path\\With\\Many\\Parts\\To\\This\\Class', 'Yii\\'); //'Yii\\' === substr($class, 0, 4);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/QXMfF on line 5
Process exited with code 255.

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328.71 ms | 401 KiB | 452 Q