How to execute a background process with PHP?

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Sometimes, we want to execute a background process with PHP.

In this article, we’ll look at how to execute a background process with PHP.

How to execute a background process with PHP?

To execute a background process with PHP, we can use the exec function.

For instance, we write

exec(sprintf("%s > %s 2>&1 & echo $! >> %s", $cmd, $outputfile, $pidfile));

to run echo with %s as the placeholders.

The arguments that comes after the string are the values for the placeholders.

We call sprintf to interpolate the placeholders with the values and return the string.

Then we call exec to run the command string.

Conclusion

To execute a background process with PHP, we can use the exec function.

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