PHP 生成指定大小随机图片
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<?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); |
生成的图如下：
http://files.cnblogs.com/zjfree/rand_img.rar
原文：http://www.cnblogs.com/zjfree/p/3729865.html