Description:
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---
From manual page: http://www.php.net/function.mkdir
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Example #2 sets the access mode to 0, which means nobody can access it. It should use the default value (0777).

Test script:
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$structure = './depth1/depth2/depth3/';

mkdir($structure, 0, true);

file_put_contents($structure.'/my-file.txt', 'hello world');

Expected result:
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A file named 'my-file.txt' in './depth1/depth2/depth3/' with the content 'hello world' should be created

Actual result:
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Warning: mkdir() [function.mkdir]: Permission denied in [...]