How to solve the garbled problem of php imagecreate

php imagecreate garbled solution: 1. Create a canvas through imagecreate; 2. Use imagecolorallocate to set the background color of the canvas; 3. Set "header('content-type:image/gif');" .

The operating environment of this article: Windows7 system, PHP7.1 version, DELL G3 computer

How to solve the garbled problem of php imagecreate?

Solution to the problem that PHP becomes garbled when creating an image (GD)

Problematic code:

nbsp;html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">   

Running result:

Modified code:

Running results:
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