php图片等比例缩放函数

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                            <p>比格设计是135编辑器旗下一款一站式、多场景、智能化的在线图片编辑器</p>
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                $filename="q.jpg";<br />$per=0.3;<br />list($width, $height)=getimagesize($filename);<br />$n_w=$width*$per;<br />$n_h=$height*$per;<br />$new=imagecreatetruecolor($n_w, $n_h);<br />$img=imagecreatefromjpeg($filename);<br />//拷贝部分图像并调整<br />imagecopyresized($new, $img,0, 0,0, 0,$n_w, $n_h, $width, $height);<br />//图像输出新图片、另存为<br />imagejpeg($new, "q1.jpg");<br />imagedestroy($new);<br />imagedestroy($img);<br /><p>?></p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p>