url parameters in Command Line

i am trying to make a pdf file with wkhtmltopdf when i pass url www.example.com pdf is generating or www.example.com?id=1

but when i try to put another parameter command execution is not working

www.example.com?id=1&type=u

shell_exec("c:\pdf\wkhtmltopdf.exe http://localhost/test/index.php?id=1&typee=abc test.pdf ");

i try to use it via command line to but its not开发者_StackOverflow working there also

thanks for help

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The & is causing your command to fail as it has special meaning in shell. Use escapeshellarg() to escape those characters first.

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Use escapeshellarg() to escape parameters before passing them to the command line.

This is also mandatory when passing external data (e.g. user input) as parameters.