Usage:

 1. Run the IDE and evalutate for free
 2. Click IDE menu "Configure" or "Help" -> "Edit Custom VM Options..."

 3. Append -javaagent:/absolute/path/to/jetbrains.jar to end line
eg:

mac:      
-javaagent:/Users/neo/jetbrains.jar

linux:    
-javaagent:/home/neo/jetbrains.jar

windows:  
-javaagent:C:\jetbrains.jar
-javaagent:C:\Program Files\JetBrains\PhpStorm 2019.2\jetbrains.jar

 4. Restart IDE
 5. Click IDE menu "Help" -> "Register..." or "Configure" -> "Manage License..."

    Support "License server" and "Activation code":

    1). Entry license server address: http://jetbrains-license-server (maybe autofill)
        Or click the button: "Discover Server" to fill automaticly

    2). Active offline with the activation code file: ACTIVATION_CODE.txt
        If the activation window always pops up(error 1653219), remove jetbrains' domains from hosts file