TP Framework Write login function, verification code verification, but can not display the verification code picture

Using the TP framework to write a landing interface, originally can display the verification code picture, but after the project has been transplanted, can not display the verification code picture, only display a white box, there is no verification code picture content, page display:

Look for answers!

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Using the TP framework to write a landing interface, originally can display the verification code picture, but after the project has been transplanted, can not display the verification code picture, only display a white box, there is no verification code picture content, page display:

Look for answers!

Other outputs are estimated, or the BOM head
At the verifyImg very beginning ob_clean(); ,
Check again if the PHP file is utf-8 notBOM

If you open the GD library, see if you have installed FreeType, no freetype to reinstall PHP

You this question, I also met a few years ago, look here, the reason is very simple, your code file does not know what editor with the UTF8 BOM head, remove the good.

For example, the use of sublime set up a bit better.

Define (' DEBUG ', true);
Verifyimg method End Plus
Header (' text/html ');

And look at the error message.

If it is a Chinese picture, see if the php.ini is open mbstring

Ob_clean ();

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