Both the $myVar assignment in line 1 and the $higher assignment in line 2
are dead. The first because $myVar is never used and the second because
$higher is always overwritten for every possible time line.
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}
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/**
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* Returns and validates path.
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*
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* @param string $argument_name Argument name, that contains path.
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*
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* @return string
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* @throws \InvalidArgumentException When path isn't valid.
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.