Problem with testfor command: "expected '{' as first char"

I am making an adventure map but I have a problem.

For the testfor command I put /testfor @p [r=3] but it doesn't work.

The command block says:

[13:13:15] Data tag parsing failed: Invalid tag encountered, expected '{' as first char.

I am using Minecraft version 1.8.8.

minecraft-java-edition minecraft-commands

Best Answer

The Syntax is just a little bit wrong here's yours:

/testfor @p [r=3]

The Correct One:

/testfor @p[r=3]

Side Note: If your using /testfor @p[x=1,y=1,z=1,r=1] with negative numbers, it won't work.

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What replaced the Testfor command in Minecraft?

The /testfor command became obsolete in Minecraft 1.13, and has been replaced by the /execute command*. It will do the same as typing /testfor @e {SelectedItem:{id:"<item>"}} and then putting a comparator to the command block with the command, and then running the command which you wanna run.

How do I use the Testfor player command?

How to Enter the Command

Test if Players are within 10 blocks. In this example, we will test to see if there are any players within a 10 block radius with the following command: /testfor @a[r=10] ...

Test if Mooshrooms are within 50 blocks. ...

Test if Nearest Player is at Level 20 experience.

Comparator Testfor Problem fix

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