本文实例讲述了PHP动态生成指定大小随机图片的方法。分享给大家供大家参考,具体如下:
<?php $image_width = 100; $image_height = 100; $image_str = ''; if (isset($_GET['w'])) { $image_width = intval($_GET['w']); } if (isset($_GET['h'])) { $image_height = intval($_GET['h']); } if (isset($_GET['s'])) { $image_str = $_GET['s']; } $img = imagecreate($image_width, $image_height); $color = imagecolorallocate($img, mt_rand(157,255), mt_rand(157,255), mt_rand(157,255)); imagefilledrectangle($img, 0, $image_height, $image_width, 0, $color); $step = mt_rand(15, 30); $start = mt_rand(0, $step); $color = imagecolorallocate($img, mt_rand(200,255), mt_rand(200,255), mt_rand(200,255)); imagesetthickness($img, mt_rand(3, 10)); if ($image_height > $image_width) { for ($i=$start; $i<$image_height * 2; $i+=$step) { imageline($img, 0, $i, $i, 0, $color); } } else { for ($i=$start; $i<$image_width * 2; $i+=$step) { imageline($img, $i, 0, 0, $i, $color); } } if ($image_str != '') { $black = imagecolorallocate($img, 0, 0, 0); imagestring($img, 12, 5, 5, $image_str, $black); } header('Content-type:image/png'); imagepng($img); imagedestroy($img);
更多关于PHP相关内容感兴趣的读者可查看本站专题:《PHP图形与图片操作技巧汇总》、《php操作office文档技巧总结(包括word,excel,access,ppt)》、《php日期与时间用法总结》、《php面向对象程序设计入门教程》、《php字符串(string)用法总结》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
希望本文所述对大家PHP程序设计有所帮助。

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