Description:
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From manual page: http://www.php.net/phar.constants
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There are three errors in the documentation of Phar class constants:

The constant "Phar::SAME" does not exist.
The value of constant "Phar::PHP" is 0, not 1
The value of constant "Phar::PHPS" is 1, not 2

Test script:
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var_dump(Phar::PHP);
var_dump(Phar::PHPS);
var_dump(Phar::SAME);

Expected result:
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int(1)
int(2)
int(0)

Actual result:
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int(0)
int(1)

Fatal error: Uncaught Error: Undefined class constant 'SAME'