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Programming PHP, 3rd Edition by Peter MacIntyre, Kevin Tatroe, Rasmus Lerdorf

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Name

escapeshellarg

Synopsis

string escapeshellarg(string argument)

Properly escapes argument so it can be used as a safe argument to a shell function. When directly passing user input (such as from forms) to a shell command, you should use this function to escape the data to ensure that the argument isn’t a security risk.

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