Ask the experts about php graphics

Could you tell me how to draw php graphics. When writing web code, php will write the code for drawing the image: the code is as follows header (& quot; content-type: image/gif & quot;); & nbsp; $ im = Imagecreate (, 6. could you tell me about php graphics.
When I write web code, php will write the code for drawing graphics: the code is as follows:
Header ("content-type: image/gif ");
$ Im = Imagecreate (200,60 );
$ White = imagecolorallocate ($ im, 159 );
Imagegif ($ im );
After being drawn, other php code in the file is garbled during execution.) but I can write this part of code into a separate file and save it to run properly, what is the problem? Which one do I use comprehensively? I use appserv.

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Is it because your encoding is not uniform or you have output statements before header ()?
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I don't know what you want to echo. to directly display images in a browser, no output can be provided.
By taking a detour, embed an HTML code into those lines in createyouimage. php.
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Since the image is generated, of course, the file should contain image data. You cannot add other things.