SET ENVIRONMENT VARIABLE
SET ENVIRONMENT VARIABLE ( varName ; varValue )
| Parameter | Type | Description | |
|---|---|---|---|
| varName | Text | → | Variable name to set |
| varValue | Text | → | Value of the variable or "" to reset default value |
Compatibility
This command is maintained for compatibility reasons only. It is now recommended to use the 4D.SystemWorker class.
Description
The SET ENVIRONMENT VARIABLE command allows you to set the value of an environment variable under macOS and Windows. It is meant to be used with the LAUNCH EXTERNAL PROCESS command. It also works with the PHP Execute command.
Pass the name of the variable to define in varName and its value in varValue.
- To get the general list of environment variables and possible values, please refer to the technical documentation of your operating system.
- Three specific environment variables are available for use in the context of the LAUNCH EXTERNAL PROCESS command:
_4D_OPTION_CURRENT_DIRECTORY
_4D_OPTION_HIDE_CONSOLE (Windows only)
_4D_OPTION_BLOCKING_EXTERNAL_PROCESS.
For information on these variables, please refer to the documentation for the LAUNCH EXTERNAL PROCESS command.
Example
Refer to examples of the LAUNCH EXTERNAL PROCESS command.
See also
Properties
| Command number | 812 |
| Thread safe | ✓ |