<?php// 获取用户参数$width = isset($_GET['width']) ? $_GET['width'] : 200;$height = isset($_GET['height']) ? $_GET['height'] : 200;// 创建画布并填充颜色$canvas = imagecreatetruecolor($width, $height);$color = imagecolorallocate($canvas, 0, 0, 0);imagefill($canvas, 0, 0, $color);// 输出图片header('Content-Type: image/jpeg');imagejpeg($canvas);imagedestroy($canvas);?>

<img src="http://example.com/images/image.jpg" >

<?php// 随机选取一张图片$images = array('image1.jpg"/post/randomImage.php" >

<canvas id="myCanvas"></canvas><script>var canvas = document.getElementById('myCanvas');var context = canvas.getContext('2d');context.fillStyle = 'blue';context.fillRect(50, 50, 100, 100);</script>

<canvas id="myCanvas"></canvas><script>var canvas = document.getElementById('myCanvas');var context = canvas.getContext('2d');var x = 50;var y = 50;var dx = 5;function draw() {context.clearRect(0, 0, canvas.width, canvas.height);context.fillRect(x, y, 50, 50);if (x + dx >canvas.width - 50 || x + dx< 0) {dx = -dx;}x += dx;requestAnimationFrame(draw);}requestAnimationFrame(draw);</script>