用php GD库 处理完图片后 只能将图片 用 imagejpeg() 输出 或者写入一个文件很多时候并不需要这么做 比如要将图片存入数据库 就需要把图片写入变量保存用 ob_start() 启用缓存 ob_get_contents()获取缓存就可以将图片写入变量
实例代码如下:
<?php $imgPath = "图片地址"; //获得图片信息 $imgPath 可以为远程地址 list($srcWidth, $srcHeight, $type) = getimagesize($imgPath); //... switch ($type) { case 1: $imgCreate = 'ImageCreateFromGIF'; break; case 2: $imgCreate = 'ImageCreateFromJPEG'; break; case 3: $imgCreate = 'ImageCreateFromPNG'; break; default: return false; } $orig = $imgCreate($imgPath); //... //开启缓存 ob_start(); //生成图片 switch ($type) { case 1: imagegif($orig); break; case 2: imagejpeg($orig); break; // best quality case 3: imagepng($orig); break; // no compression default: echo ''; break; } //将图片存入变量 $imageCode = ob_get_contents(); ob_end_clean(); ?>
个人不建义把图片保存在变量 了,这样会比较浪费资源 ,这里也是测试好玩的哦.
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随意转载^^但请附上教程地址。

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