How to limit file upload type file size in PHP

Question

I have an upload form and am checking the file size and file type to limit the uploaded file to 2 megabytes and either  pdf   jpg   gif or  png file types   My goal is to have an alert message displayed to the user if they violate one of these rules   There are four scenarios    Correct Size   Correct Type  working  Correct Size   INCORRECT Type  working  INCORRECT Size   Correct Type  not working  INCORRECT Size   INCORRECT Type  not working    With my current code  it always displays the incorrect  type  message when the file size is greater than 2 megabytes   4   even if the file type is correct   3      Any ideas why   if  isset     FILES  uploaded file               file size     FILES  uploaded file    size         file type     FILES  uploaded file    type         if    file size  gt  2097152                   message    File too large  File must be less than 2 megabytes             echo   lt script type  text javascript  gt alert     message      lt  script gt               elseif               file type     application pdf    amp  amp            file type     image jpeg    amp  amp            file type     image jpg    amp  amp            file type     image gif    amp  amp            file type     image png                       message    Invalid file type  Only PDF  JPG  GIF and PNG types are accepted             echo   lt script type  text javascript  gt alert     message      lt  script gt                           else           store uploaded file  id

User · Accepted Answer

Something that your code doesn t account for is displaying multiple errors  As you have noted above it is possible for the user to upload a file  2MB of the wrong type  but your code can only report one of the issues  Try something like   if isset   FILES  uploaded file            errors       array         maxsize      2097152       acceptable   array           application pdf            image jpeg            image jpg            image gif            image png              if    FILES  uploaded file    size    gt    maxsize        FILES  uploaded file    size      0              errors      File too large  File must be less than 2 megabytes               if   in array   FILES  uploaded file    type     acceptable    amp  amp    empty   FILES  uploaded file    type                 errors      Invalid file type  Only PDF  JPG  GIF and PNG types are accepted               if count  errors      0            move uploaded file   FILES  uploaded file    tmpname      store to location file          else           foreach  errors as  error                echo   lt script gt alert     error      lt  script gt                       die      Ensure no more processing is done           Look into the docs for move uploaded file    it s called move not store  for more

User · Answer

var sizef   document getElementById  input-file-id   files 0  size                  if sizef  gt  210000                       alert  sorry error                     else                         action

User · Answer

Hope This useful     form    lt form action  check php  method  post  enctype  multipart form-data  gt   lt label gt Upload An Image lt  label gt   lt input type  file  name  file upload    gt   lt input type  submit  name  upload   gt   lt  form gt    check php    lt  php      if isset   POST  upload               maxsize 2097152           format array  image jpeg        if   FILES  file upload    size   gt   maxsize            error 1  File Size too large           echo   lt script gt alert     error 1     lt  script gt              elseif   FILES  file upload    size    0            error 2  Invalid File           echo   lt script gt alert     error 2     lt  script gt              elseif  in array   FILES  file upload    type    format             error 3  Format Not Supported Only  jpeg files are accepted           echo   lt script gt alert     error 3     lt  script gt                       else               target dir    uploads                 target file    target dir   basename   FILES  file upload    name                 if move uploaded file   FILES  file upload    tmp name     target file                 echo  The file    basename   FILES  file upload    name       has been uploaded                              else                  echo  sorry                                           gt

User · Answer

If you are looking for a hard limit across all uploads on the site  you can limit these in php ini by setting the following     upload max filesize   2M    post max size   2M   that will set the maximum upload limit to 2 MB

User · Answer

Hope this helps  -   if isset   POST  submit          ini set  post max size    30M        ini set  upload max filesize    30M        ini set  memory limit    20000M          fileName  product demo png        if   FILES  imgproduct    size    gt  0  amp  amp                   FILES  imgproduct    type       image gif                          FILES  imgproduct    type       image jpeg                         FILES  imgproduct    type       image pjpeg                          FILES  imgproduct    type       image png    amp  amp                     FILES  imgproduct    size    lt  2097152              if    FILES  imgproduct    error    gt  0               echo  Return Code        FILES  imgproduct    error       lt br   gt              else                    rnd rand 100 999                rnd  rnd                   fileName    rnd trim   FILES  imgproduct    name                  tmpName      FILES  imgproduct    tmp name                 fileSize     FILES  imgproduct    size                 fileType     FILES  imgproduct    type                   target    upload                echo  target    target   rnd  basename    FILES  imgproduct    name                   move uploaded file   FILES  imgproduct    tmp name     target                   else           echo  Sorry  there was a problem uploading your file

[php] How to limit file upload type file size in PHP?

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