PHP avatar upload

Hee hee hee, since Christmas, I have been lazy. Because of being too busy these days, I feel that I haven’t come out for a long time, eh ...

I have been struggling for life. As a front-end development engineer, I am becoming more and more confused. I don’t know who I am now.

Will html5 and css3 be the front end?

Do you know PHP as a front-end?

Will smarty be the front end?

Do you know JavaScript as a front-end?

Do you know jQuery is the front-end?

Does Ajax work as a front-end?

是 Will various frameworks are the front end?

                                                                                                                                                                                          are now increasingly felt that I am not a front-end person anymore. I have learned a lot and used it in various ways. Is this the fate of the front-end?

Website front-end:

                 For a website, the front-end usually refers to the front-end part of the website including the presentation layer and structural layer of the website. Therefore, front-end technology is generally divided into front-end design and front-end development. Front-end design can generally be understood as the visual design of the website, and front-end development is the front-end code implementation of the website, including basic HTML, CSS and JavaScript/ajax. Now the latest advanced version is HTML5, CSS3, and SVG, etc.

I recently came into contact with some PHP stuff and it feels pretty good, so I’d better share it with you!

php avatar upload:

1, html

<span><</span><span>html</span><span>></span>  
<span><</span><span>head</span><span>></span>  
<span><</span><span>title</span><span>></span>图片上传<span></</span><span>title</span><span>></span>  
<span><</span><span>style </span><span>type</span><span>="text/css"</span><span>></span><span> 
body  
    </span><span>{</span><span>font-size</span><span>:</span><span> 14px</span><span>;</span><span>}</span>  
<span></</span><span>style</span><span>></span>  
<span></</span><span>head</span><span>></span>  
  
<span><</span><span>body</span><span>></span>  
<span><</span><span>form </span><span>enctype</span><span>="multipart/form-data"</span><span> method</span><span>="post"</span><span> name</span><span>="upform"</span><span>></span><span>  
  上传文件:  
  </span><span><</span><span>input </span><span>name</span><span>="upfile"</span><span> type</span><span>="file"</span><span>></span>  
  <span><</span><span>input </span><span>type</span><span>="submit"</span><span> value</span><span>="上传"</span><span>><</span><span>br</span><span>></span>  
   
<span></</span><span>form</span><span>></span> 

2. php upload avatar

<?<span>php
 </span><span>//</span><span>上传文件类型列表  </span>
<span>$uptypes</span>=<span>array</span><span>(  
    </span>'image/jpg',  
    'image/jpeg',  
    'image/png',  
    'image/pjpeg',  
    'image/gif',  
    'image/bmp',  
    'image/x-png'<span>  
);

</span><span>$max_file_size</span>=2000000;     <span>//</span><span>上传文件大小限制, 单位BYTE  </span>
<span>$destination_folder</span>="uploadimg/"; <span>//</span><span>上传文件路径  </span>
<span>$cun</span>="../../images/uploadimg/"<span>;
</span><span>$imgpreview</span>=1;      <span>//</span><span>是否生成预览图(1为生成,其他为不生成);  </span>
<span>$imgpreviewsize</span>=1/2;    <span>//</span><span>缩略图比例  </span>

?>

Simply define the format and other parameters for image upload,

3. Specific judgment method

<?<span>php  
</span><span>if</span> (<span>$_SERVER</span>['REQUEST_METHOD'] == 'POST'<span>)  
 {  
     </span><span>if</span> (!<span>is_uploaded_file</span>(<span>$_FILES</span>["upfile"<span>][tmp_name]))  
     </span><span>//</span><span>是否存在文件  </span>
<span>     {  
         </span><span>echo</span> "图片不存在!"<span>;  
         </span><span>exit</span><span>;  
     }  
  
    </span><span>$file</span> = <span>$_FILES</span>["upfile"<span>];  
    </span><span>if</span>(<span>$max_file_size</span> < <span>$file</span>["size"<span>])  
    </span><span>//</span><span>检查文件大小  </span>
<span>    {  
        </span><span>echo</span> "文件太大!"<span>;  
        </span><span>exit</span><span>;  
    }  
  
    </span><span>if</span>(!<span>in_array</span>(<span>$file</span>["type"], <span>$uptypes</span><span>))  
    </span><span>//</span><span>检查文件类型  </span>
<span>    {  
        </span><span>echo</span> "文件类型不符!".<span>$file</span>["type"<span>];  
        </span><span>exit</span><span>;  
    }  
  
    </span><span>if</span>(!<span>file_exists</span>(<span>$destination_folder</span><span>))  
    {  
        </span><span>mkdir</span>(<span>$destination_folder</span><span>);  
    }  
  
    </span><span>$filename</span>=<span>$file</span>["tmp_name"<span>];  
    </span><span>$image_size</span> = <span>getimagesize</span>(<span>$filename</span><span>);  
    </span><span>$pinfo</span>=<span>pathinfo</span>(<span>$file</span>["name"<span>]);  
    </span><span>$ftype</span>=<span>$pinfo</span>['extension'<span>];  
    </span><span>$destination</span> = <span>$destination_folder</span>.<span>time</span>().".".<span>$ftype</span><span>;  
    </span><span>if</span> (<span>file_exists</span>(<span>$destination</span>) && <span>$overwrite</span> != <span>true</span><span>)  
    {  
        </span><span>echo</span> "同名文件已经存在了"<span>;  
        </span><span>exit</span><span>;  
    }  
  
    </span><span>if</span>(!<span>move_uploaded_file</span> (<span>$filename</span>, <span>$destination</span><span>))  
    {  
        </span><span>echo</span> "移动文件出错"<span>;  
        </span><span>exit</span><span>;  
    }  
  
    </span><span>if</span>(<span>$imgpreview</span>==1<span>)  
    {  
    </span><span>echo</span> "<br>图片预览:<br>"<span>;  
    </span><span>echo</span> "<img src=\"".<span>$destination</span>."\" width=".(<span>$image_size</span>[0]*<span>$imgpreviewsize</span>)." height=".(<span>$image_size</span>[1]*<span>$imgpreviewsize</span><span>);  
    </span><span>echo</span> " alt=\"图片预览:\r文件名:".<span>$destination</span>."\r上传时间:\">"<span>;  
    }  
  }
</span>?>  

Anyway, it’s just a blind cat encountering a dead mouse, and the result is such a willful effect, hehe, the storage path of the generated image is a key, just pay attention to it!

The above introduces PHP avatar uploading, including aspects of content. I hope it will be helpful to friends who are interested in PHP tutorials.