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Php exec() vs shell_exec
Php exec example!
The PHP exec() function allows you to execute shell commands and other system programs directly from a PHP script. This provides a simple way to leverage command line utilities, run scripts in other languages like Python or Ruby, and automate sysadmin tasks.
In this comprehensive guide, we will cover the fundamentals of using exec(), best practices for utilizing it safely, and some powerful applications.
How the exec() Function Works
The exec() function syntax is straightforward:
It takes the shell command to run as the first argument.
Two optional arguments are also available:
- $output – Array to store full output from the command
- $return_var – Returned exit status code from the process
By default, exec() returns the last line of output from running the command.
Using exec() allows leveraging existing command line utilities directly from PHP.
This can be faster and simpler compared to purely PHP implementations for some tasks.
Some examples of common use cases include:
- File and directory listings
- Running scripts written in other languages
- System admini
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