PHP制作验证码 php验证验证码 php表单验证码 php网站验证

<code><span><span><?php </span><span>$img</span> = imagecreatetruecolor(<span>100</span>,<span>30</span>);<span>//大小</span><span>$bgColor</span> = imagecolorallocate(<span>$img</span>,<span>0x00</span>,<span>0x00</span>,<span>0x00</span>);<span>//背景颜色</span>
imagefill(<span>$img</span>,<span>0</span>,<span>0</span>,<span>$bgColor</span>);<span>//填充颜色</span>
header(<span>'content-type: image/png'</span>);
imagepng(<span>$img</span>);
<span>//销毁</span>
imagedestroy(<span>$img</span>);</span></span></code>