Why can't I create an image after displayerrors is opened in PHP in WAMP?

Source: Internet
Author: User
Why can't I create images after I have opened displayerrors for PHP in WAMP? Why can't I create an image after displayerrors is opened in PHP in WAMP, so that I cannot create a verification code. After displayerrors is disabled, you can create images again. ------ Solution ------------------ check the global variables with isset every time. For example, $ sessisset ($ _ S why cannot I create an image after PHP opens a display errors account in WAMP?
Excuse me?
Why cannot I create an image after I open a display errors account in WAMP, so that I cannot create a verification code.

Turn off the display errors and create an image again.

------ Solution --------------------
Check the global variables with isset every time.
For example, $ sess = isset ($ _ SESSION ['mysession'])? $ _ SESSION ['mysession']: "";
For images, check whether BOM exists.

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