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PHP - FDF Set Opt Module
The fdf_set_opt() function can set an option of a field.
Syntax
bool fdf_set_opt( resource $fdf_document , string $fieldname , int $element , string $str1 , string $str2 )
The fdf_set_opt() function can set options of a given field.
The fdf_set_opt() function can return true on success, or false on failure.
php_function_reference.htm
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