How to execute shell without waiting for response in php: first open the corresponding background; then implement it through the "system("nohup ./test.py $s &");" method.
The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer
How to execute shell without waiting for response?
How to use system to run commands in the background without waiting for the result
system("nohup ./test.py $s &");This will not run in the background, and php will hang until the end of test.py.
system("nohup ./test.py $s >>log.txt &");Write this way to run in the background. Because the system function starts a program and wants to keep it running in the background,
You must ensure that the output of the program is redirected to a file or other output stream. Otherwise PHP will hang before program execution ends.
For example:
1. system(“nohup ./test.py $s >>/tmp/output.txt &”);
2. system (“nohup ./test.py $s > /dev/null 2>&1 &”);
(2>&1 is the error output to the standard output. If you want to read the error output, add 2>&1 , no error can be read without adding)
Or system(“nohup ./test.py $s > /dev/null &”);
Recommended learning:《PHP video tutorial》
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