php给图片添加文字水印

<?php /*打开图片*///1.配置图片路径$src = "bg.jpg";//2.获取图片信息$info = getimagesize($src);//3.通过编号获取图像类型$type = image_type_to_extension($info[2],false);//4.在内存中创建和图像类型一样的图像$fun = "imagecreatefrom".$type;//5.图片复制到内存$image = $fun($src);/*操作图片*///1.设置字体的路径$font = "msyh.ttf";//2.填写水印内容$content = "水印文字♂some special words are supported.";//3.设置字体颜色和透明度$color = imagecolorallocatealpha($image, 50, 50, 50, 50);//4.写入文字imagettftext($image, 20, 0, 0, 30, $color, $font, $content);/*输出图片*///浏览器输出header("Content-type:".$info['mime']);$fun = "image".$type;$fun($image);//保存图片$fun($image,'bg_res.'.$type);/*销毁图片*/imagedestroy($image);