使用imageaffinematrixconcat 和圖像翻轉技術的實用技巧

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</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>在 PHP 的圖像處理領域，<code>imageaffinematrixconcat

\$flipMatrix = [
    'sx' => -1, 'rx' => 0, 'tx' => imagesx(\$image),
    'ry' => 0, 'sy' => 1, 'ty' => 0,
];
\$newMatrix = imageaffinematrixconcat(\$existingMatrix, \$flipMatrix);