深入解析imagesetinterpolation() 在圖像縮放中的作用及應用技巧

<span><span><span class="hljs-meta"><?php</span></span><span>
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</span><span><span class="hljs-comment">// 正文開始</span></span><span>
</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>深入解析 imagesetinterpolation() 在圖像縮放中的作用及應用技巧</h1>"</span></span><span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>在 PHP 的 GD 庫中，圖像縮放是一個常見需求，而 <code>imagesetinterpolation()

// 創建原始圖像
</span></span><span><span class="hljs-subst">$src</span></span><span> = imagecreatefromjpeg('source.jpg');
</span><span><span class="hljs-subst">$dst</span></span><span> = imagecreatetruecolor(200, 150);

// 設置插值方法
imagesetinterpolation(</span><span><span class="hljs-subst">$dst</span></span><span>, IMG_BICUBIC);

// 進行縮放
imagecopyresampled(</span><span><span class="hljs-subst">$dst</span></span><span>, </span><span><span class="hljs-subst">$src</span></span><span>, 0, 0, 0, 0, 200, 150, imagesx(</span><span><span class="hljs-subst">$src</span></span><span>), imagesy(</span><span><span class="hljs-subst">$src</span></span><span>));

// 輸出圖像
imagejpeg(</span><span><span class="hljs-subst">$dst</span></span><span>, 'resized.jpg');

// 釋放資源
imagedestroy(</span><span><span class="hljs-subst">$src</span></span><span>);
imagedestroy(</span><span><span class="hljs-subst">$dst</span></span><span>);