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<?php class Test { public function __construct() { if (version_compare(PHP_VERSION, '7.0.0', '<')) { class Throwable extends Exception {}; class ParseError extends Exception {}; echo "Defined\n"; } } } $a = new Test(); var_dump(class_exists('Throwable'));
Output for git.master_jit, git.master
Fatal error: Class declarations may not be nested in /in/dsd0C on line 8 Stack trace: #0 {main}
Process exited with code 255.

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