How to solve the php qrcode garbled problem

The solution to garbled php qrcode: first add "exit();" after calling "\QRcode::png($url);"; then call "\QRcode::png($url) );" just add "'Content-Type: image/png'" in front of it.

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phpqrcode garbled code/phpqrcode picture is not displayed

The error is as shown, garbled characters

header('Content-Type: image/png');
ob_clean();

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