mysql - Error in php error handling (file upload) -

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i want put out error message when uploaded image size on 3mb. current code. should put out error message when image on 3mb, nothing. what's wrong code?

if ( $_files['file']['size'] != 0 )  {  //image check start  if ((($_files["file"]["type"] == "image/gif")  || ($_files["file"]["type"] == "image/jpeg")  || ($_files["file"]["type"] == "image/png")  || ($_files["file"]["type"] == "image/pjpeg"))  && ($_files["file"]["size"] < 3072000))  //image check end  {       if (file_exists($upload_path."/".$_files["file"]["name"]))        {            $file_tmp = $_files["file"]["name"];       } //link if there file identical file name       else       {            $photoid = $upfile_idx.".".substr($_files['file']['name'],-3);            move_uploaded_file($_files["file"]["tmp_name"], $upload_path."/".$photoid);            $file_tmp = $photoid ;       } //upload image file upload folder , generate id image   }   else   {       error("maximum image size exceeded or invalid file format.");   } }  //insert $file_tmp database here  ---------- error code (added later) function error($msg) {   echo "<script>alert(\"$msg\");history.go(-1);</script>";   exit; }

i've found what's wrong. in php.ini file, there 'upload_max_filesize = 3m' , that's causing problem. when changed 'upload_max_filesize = 4m', worked fine. thank help.

something on following should good.

 <?php  if ( $_files['file']['size'] != 0 )  {  //image check start   if(!in_array($_files["file"]["type"], array("image/gif", "image/jpeg", "image/png", "image/pjpeg")))  {     error("file should jpg/jpeg/png/pjepg only");     return;   }  if($_files["file"]["size"] > 3145728)  {     error("file should less 3 mb");        return;   }  #rest of upload code should go below here. } ?>

3145728 translates 3 mb in bytes since $_files["file"]["size"] gives size of file being uploaded in bytes.


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