Why does this PHP empty filename pass validation?
Why does this PHP empty filename pass validation in upload. The PHP code checks only $_FILES error but not name. In PHP a no-file upload has empty name and can overwrite with path traversal.
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What's wrong with this PHP Closure capturing loop variable?
What's wrong with this PHP Closure capturing loop variable by reference. The PHP code creates closures in a loop that capture the same variable. In PHP async all callbacks see the final value.
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