<code><span><span><?php</span><span>//画画布</span><span>$img</span> = imagecreatetruecolor(<span>100</span>, <span>40</span>); <span>//三种颜色</span><span>$black</span> = imagecolorallocate(<span>$img</span>, <span>0x00</span>, <span>0x00</span>, <span>0x00</span>); <span>$green</span> = imagecolorallocate(<span>$img</span>, <span>0x00</span>, <span>0xFF</span>, <span>0x00</span>); <span>$white</span> = imagecolorallocate(<span>$img</span>, <span>0xFF</span>, <span>0xFF</span>, <span>0xFF</span>); <span>//填充白色</span> imagefill(<span>$img</span>,<span>0</span>,<span>0</span>,<span>$white</span>); <span>//生成随机的验证码</span><span>$code</span> = <span>''</span>; <span>for</span>(<span>$i</span> = <span>0</span>; <span>$i</span> < <span>4</span>; <span>$i</span>++) { <span>$code</span> .= rand(<span>0</span>, <span>9</span>); } imagestring(<span>$img</span>, <span>5</span>, <span>10</span>, <span>10</span>, <span>$code</span>, <span>$black</span>); <span>//加入噪点干扰</span><span>for</span>(<span>$i</span>=<span>0</span>;<span>$i</span><<span>50</span>;<span>$i</span>++) { imagesetpixel(<span>$img</span>, rand(<span>0</span>, <span>100</span>) , rand(<span>0</span>, <span>100</span>) , <span>$black</span>); imagesetpixel(<span>$img</span>, rand(<span>0</span>, <span>100</span>) , rand(<span>0</span>, <span>100</span>) , <span>$green</span>); } <span>//png输出验证码jpeg输出到当前文件夹</span> header(<span>"content-type: image/png"</span>); imagepng(<span>$img</span>); imagejpeg(<span>$img</span>, <span>"./ok.jpeg"</span>, <span>75</span>); imagedestroy(<span>$img</span>); ```<span><?php</span><span>//画画布</span><span>$img</span> = imagecreatetruecolor(<span>100</span>, <span>40</span>); <span>//三种颜色</span><span>$black</span> = imagecolorallocate(<span>$img</span>, <span>0x00</span>, <span>0x00</span>, <span>0x00</span>); <span>$green</span> = imagecolorallocate(<span>$img</span>, <span>0x00</span>, <span>0xFF</span>, <span>0x00</span>); <span>$white</span> = imagecolorallocate(<span>$img</span>, <span>0xFF</span>, <span>0xFF</span>, <span>0xFF</span>); <span>//填充白色</span> imagefill(<span>$img</span>,<span>0</span>,<span>0</span>,<span>$white</span>); <span>//生成随机的验证码</span><span>$code</span> = <span>''</span>; <span>for</span>(<span>$i</span> = <span>0</span>; <span>$i</span> < <span>4</span>; <span>$i</span>++) { <span>$code</span> .= rand(<span>0</span>, <span>9</span>); } imagestring(<span>$img</span>, <span>5</span>, <span>10</span>, <span>10</span>, <span>$code</span>, <span>$black</span>); <span>//加入噪点干扰</span><span>for</span>(<span>$i</span>=<span>0</span>;<span>$i</span><<span>50</span>;<span>$i</span>++) { imagesetpixel(<span>$img</span>, rand(<span>0</span>, <span>100</span>) , rand(<span>0</span>, <span>100</span>) , <span>$black</span>); imagesetpixel(<span>$img</span>, rand(<span>0</span>, <span>100</span>) , rand(<span>0</span>, <span>100</span>) , <span>$green</span>); } <span>//png输出验证码jpeg输出到当前文件夹</span> header(<span>"content-type: image/png"</span>); imagepng(<span>$img</span>); imagejpeg(<span>$img</span>, <span>"./ok.jpeg"</span>, <span>75</span>); imagedestroy(<span>$img</span>);</span></code>').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i ').text(i)); }; $numbering.fadeIn(1700); }); });
以上就介紹了php中利用gd圖片驗證碼產生和保存,包括了方面的內容,希望對PHP教程有興趣的朋友有所幫助。