Show long strings in VS Code when working with PHP + XDEBUG

Question

I'm using VS Code for PHP web development. VS Code with XDEBUG appears to be severely limited in displaying string-valued variables. The Variables and Watch windows are limited to the width of the window, or to the first new-line character.

You can display more in the Debug Console by evaluating the string, but only up to something slightly more than 1000 characters. The string is simply truncated. The same happens when you copy the value and paste in an editor window.

This is pretty inadquate when working with any kind of real-life HTML.

I'm using VS Code 1.57.1 with XDEBUG 1.16.1 (and PHP Intelephense 1.7.1)

Anybody know of a way to adjust this?

Black · Accepted Answer · 2022-06-22 13:27:40Z

Here is the answer:

Visual Studio Code debugging Array evaluation

Basically you need to add a max_data: -1 to the launch configuration file.

e.g.

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Listen for Xdebug",
            "type": "php",
            "request": "launch",
            "port": 9004,
            "xdebugSettings": {
                "max_children": 128,
                "max_data": -1,
                "max_depth": 3
            },
        },
        {
            "name": "Launch currently open script",
            "type": "php",
            "request": "launch",
            "program": "${file}",
            "cwd": "${fileDirname}",
            "port": 0,
            "runtimeArgs": [
                "-dxdebug.start_with_request=yes"
            ],
            "env": {
                "XDEBUG_MODE": "debug,develop",
                "XDEBUG_CONFIG": "client_port=${port}"
            }
        },
        {
            "name": "Launch Built-in web server",
            "type": "php",
            "request": "launch",
            "runtimeArgs": [
                "-dxdebug.mode=debug",
                "-dxdebug.start_with_request=yes",
                "-S",
                "localhost:0"
            ],
            "program": "",
            "cwd": "${workspaceRoot}",
            "port": 9004,
            "serverReadyAction": {
                "pattern": "Development Server \\(http://localhost:([0-9]+)\\) started",
                "uriFormat": "http://localhost:%s",
                "action": "openExternally"
            }
        }
    ],
}

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