PHP base64转换成图片

最新推荐文章于 2023-03-18 21:44:19 发布

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最新推荐文章于 2023-03-18 21:44:19 发布

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原文链接：http://www.cnblogs.com/ymj0906/p/9273701.html

本文介绍了一种从Base64字符串中解析并生成图片的方法。通过PHP代码实现了Base64字符串的处理、图片名的生成、路径设置及图片保存等功能。

获取base64文件

$image="data:image/png;base64,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";

设置生成的图片名字

$imageName = "25220_".date("His",time())."_".rand(1111,9999).'.png';

判断是否有逗号如果有就截取后半部分

if (strstr($image,",")){
    $image = explode(',',$image);
    $image = $image[1];
}

设置图片保存路径

$path = "tmp/signImage/".date("Ymd",time());

判断目录是否存在不存在就创建并赋予777权限

if (!is_dir($path)){ //判断目录是否存在 不存在就创建
   mkdir($path,0777,true);
}

拼接路径和图片名称

$imageSrc=  $path."/". $imageName;

生成图片返回的是字节数

$r = file_put_contents(ROOT_PATH ."public/".$imageSrc, base64_decode($image));

判断图片是否生成成功

if (!$r) {
   return json(['data'=>null,"code"=>1,"msg"=>"图片生成失败"]);
 }else{
   return json(['data'=>1,"code"=>0,"msg"=>"图片生成成功"]);
}

完整代码如下

$image="data:image/png;base64,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";
            $imageName = "25220_".date("His",time())."_".rand(1111,9999).'.png';
            if (strstr($image,",")){
                $image = explode(',',$image);
                $image = $image[1];
            }

            $path = "tmp/signImage/".date("Ymd",time());
            if (!is_dir($path)){ //判断目录是否存在 不存在就创建
                mkdir($path,0777,true);
            }
            $imageSrc=  $path."/". $imageName;  //图片名字

            $r = file_put_contents(ROOT_PATH ."public/".$imageSrc, base64_decode($image));//返回的是字节数
            if (!$r) {
                return json(['data'=>null,"code"=>1,"msg"=>"图片生成失败"]);
            }else{
                return json(['data'=>1,"code"=>0,"msg"=>"图片生成成功"]);

转载于:https://www.cnblogs.com/ymj0906/p/9273701.html