How can the exec() function be used in PHP to start a program in the background?

To start a program in the background using the exec() function in PHP, you can append the command with " > /dev/null 2>&1 &". This will redirect the output to /dev/null, detach the process from the current shell, and run it in the background. 

$command = 'your_program_command > /dev/null 2>&1 &';
exec($command);

Keywords

exec() PHP start program background function

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