Monitoring the Debug Information

Information of a debugging session is displayed in the dedicated tabs of the Debug tool window, named after the selected run/debug configuration.

For each session, use the Console tab to view the debugger messages and application output, and the Debug tab to monitor threads and frames:

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The following is available only in the Ultimate edition of IntelliJ IDEA

When displaying and modifying local variables or watches values, IntelliJ IDEA uses the Default Encoding setting for the current project or the IDE encoding if no encoding is specified at the project level. The same setting is used when showing the PHP console script output.