Description:
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The signature for sem_get() reads

resource sem_get  ( int $key  [, int $max_acquire = 1  [, int $perm = 0666  [, int $auto_release  ]]] )

For the parameter $auto_release, it is not documented:

1. how values are handled,
2. what the default value is.

For 1 my guess is, that an integer that evaluates to boolean TRUE releases the semaphore on request shutdown and an integer that evaluates to boolean FALSE does not.

For 2 my guess is, I have to look up the documentation for a version prior to the introduction of this parameter and take that behavior as the default.


Reproduce code:
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From manual page: function.sem-get#Description
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