Home php教程 php手册 PHP给图片加数字水印出现中文乱码的解决

PHP给图片加数字水印出现中文乱码的解决

Jun 13, 2016 am 10:46 AM
php Chinese Garbled characters Appear add picture number watermark of solve

$textcolor = imagecolorallocate($img, 255, 0, 0); //设置水印字体颜色 
        $font = 'c:/windows/fonts/simhei.ttf'; //定义字体 
        $text = iconv("GB2312", "UTF-8", $waterImageUrl); //将中文字转换为UTF8 
        imagettftext($img, 20, 10, 50, 40, $textcolor, $font, $text);//将文字写到图片中 
        $this->outputImage($img, $this->getExtendsName($imageUrl), $imageUrl); 
        imagedestroy($img);///销毁图像  

 很多情况下,问题是这样解决地,可是,你别忘记了,还有特殊情况,那就是你设置了php页编码的情况,比如:header( "Content-Type:text/html; charset=UTF-8 ");
,嗯,这时候,你还用这个方式,那就死翘翘了,一样会乱码,为什么,因为本来就已经是UTF-8,你转什么啊?不乱才怪,这时候,可以将第三行去掉,直接将imagettftext方法中的$text改为$waterImageUrl,当然,还有更加特殊的情况,那就是,你传值的页面是别的编码,而非UTF-8,那估计又有文章,所以,我奉劝各位学PHP的朋友,最好保证你的网站中每个页面编码一致,这样,问题解决起来方便很多。
还是贴下代码吧,怕有些人不知道, www.2cto.com

$textcolor = imagecolorallocate($img, 255, 0, 0); //设置水印字体颜色 
        $font = 'c:/windows/fonts/simhei.ttf'; //定义字体 
        //$text = iconv("UTF-8", "UTF-8", $waterImageUrl); //将中文字转换为UTF8 
        //实际上可以看到,这里可以不用转,因为我在前面的index.php文件中已经设置了编码为UTF-8,如果 
        //写为//$text = iconv("GB2312", "UTF-8", $waterImageUrl); 反而会出现乱码 
        $text = $waterImageUrl; 
        imagettftext($img, 20, 10, 50, 40, $textcolor, $font, $text);//将文字写到图片中 
        $this->outputImage($img, $this->getExtendsName($imageUrl), $imageUrl); 
        imagedestroy($img);///销毁图像  


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