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<?php
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namespace Safe;
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use Safe\Exceptions\ExecException;
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/**
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* proc_get_status fetches data about a
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* process opened using proc_open.
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*
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* @param resource $process The proc_open resource that will
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* be evaluated.
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* @return array An array of collected information on success. The returned array contains the following elements:
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*
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*
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*
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*
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* elementtypedescription
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*
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*
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*
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* command
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* string
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*
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* The command string that was passed to proc_open.
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*
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*
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*
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* pid
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* int
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* process id
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*
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*
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* running
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* bool
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*
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* TRUE if the process is still running, FALSE if it has
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* terminated.
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*
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*
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*
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* signaled
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* bool
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*
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* TRUE if the child process has been terminated by
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* an uncaught signal. Always set to FALSE on Windows.
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*
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*
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*
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* stopped
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* bool
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*
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* TRUE if the child process has been stopped by a
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* signal. Always set to FALSE on Windows.
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*
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*
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*
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* exitcode
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* int
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*
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* The exit code returned by the process (which is only
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* meaningful if running is FALSE).
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* Only first call of this function return real value, next calls return
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* -1.
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*
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*
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*
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* termsig
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* int
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*
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* The number of the signal that caused the child process to terminate
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* its execution (only meaningful if signaled is TRUE).
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*
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*
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*
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* stopsig
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* int
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*
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* The number of the signal that caused the child process to stop its
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* execution (only meaningful if stopped is TRUE).
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*
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*
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*
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*
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*
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* @throws ExecException
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*
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*/
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function proc_get_status($process): array
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{
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error_clear_last();
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$result = \proc_get_status($process);
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if ($result === false) {
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throw ExecException::createFromPhpError();
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}
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return $result;
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}
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/**
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* proc_nice changes the priority of the current
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* process by the amount specified in increment. A
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* positive increment will lower the priority of the
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* current process, whereas a negative increment
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* will raise the priority.
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*
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* proc_nice is not related to
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* proc_open and its associated functions in any way.
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*
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* @param int $increment The new priority value, the value of this may differ on platforms.
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*
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* On Unix, a low value, such as -20 means high priority
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* wheras a positive value have a lower priority.
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*
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* For Windows the increment parameter have the
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* following meanings:
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* @throws ExecException
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*
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*/
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function proc_nice(int $increment): void
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{
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error_clear_last();
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$result = \proc_nice($increment);
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if ($result === false) {
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throw ExecException::createFromPhpError();
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}
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}
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/**
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* system is just like the C version of the
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* function in that it executes the given
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* command and outputs the result.
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*
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* The system call also tries to automatically
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* flush the web server's output buffer after each line of output if
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* PHP is running as a server module.
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*
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* If you need to execute a command and have all the data from the
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* command passed directly back without any interference, use the
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* passthru function.
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*
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* @param string $command The command that will be executed.
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* @param int $return_var If the return_var argument is present, then the
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* return status of the executed command will be written to this
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* variable.
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* @return string Returns the last line of the command output on success.
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* @throws ExecException
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*
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*/
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function system(string $command, int &$return_var = null): string
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{
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error_clear_last();
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$result = \system($command, $return_var);
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if ($result === false) {
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throw ExecException::createFromPhpError();
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}
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return $result;
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}
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