what is a good method to sanitize the whole $_POST array in php? [duplicate]

by

Just use filter_input_array() from the filter extension.

/* prevent XSS. */
$_GET   = filter_input_array(INPUT_GET, FILTER_SANITIZE_STRING);
$_POST  = filter_input_array(INPUT_POST, FILTER_SANITIZE_STRING);

This will sanitize your $_GET and $_POST.

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