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網(wǎng)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)))

換成了

$background = imagecolorallocatealpha($this->img, 255, 255, 255, 127);

結(jié)果驗證碼背景色變成了純黑色，請問大家應(yīng)該怎么改

附件已上傳，最好幫我改好發(fā)過來，謝謝！

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