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getimagesize

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Release: 2016-06-06 20:08:53
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看到这个标题,你是不是会觉得很无聊?事实上,我是想表达另外的意思。从php5.2开始,很多操作都是支持streamwrapper的功能的,所以当有一个需求:从网上下载一张图片,存到本地,并使用正确的后缀名,就需要用到getimagesize了。 $data = file_get_contents

 看到这个标题,你是不是会觉得很无聊?事实上,我是想表达另外的意思。从php5.2开始,很多操作都是支持streamwrapper的功能的,所以当有一个需求:从网上下载一张图片,存到本地,并使用正确的后缀名,就需要用到getimagesize了。

    $data = file_get_contents($url);  
    file_put_contents('xxx',$data);  
    $imageinfo = getimagesize(xxx);  
    $extension = func($imageinfo); //获取文件属性  
    rename('xxx','xxx.???');  
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以前的逻辑可以是这样。但现在可以简化一下

    $data  = file_get_contents($url);  
    $imageinfo = getimagesize('data:image/;base64,'.base64_encode($data));  
    $extension = func($imageinfo); //获取文件属性  
    file_put_contents('xxx.'.$extension , $data);  
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