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网上查了一下
$background = imagecolorallocate($this->img, hexdec(substr($this->background, 1, 2)), hexdec(substr($this->background, 3, 2)), hexdec(substr($this->background, 5, 2)))
换成了
$background = imagecolorallocatealpha($this->img, 255, 255, 255, 127);
结果验证码背景色变成了纯黑色,请问大家应该怎么改
附件已上传,最好帮我改好发过来,谢谢!