Description:
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He was convinced he would not see more such errors, but maybe have an error of concepts.

My information is this RFC: https://wiki.php.net/rfc/throwable-interface

Could check? 

Test script:
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<?php

  function @@merd( string $name ) {}

?>

Expected result:
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ParseError exception maybe!

Actual result:
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Parse error: syntax error, unexpected '--' (T_DEC), expecting identifier (T_STRING) ...