Php > Miscellaneous sample source codes

Image Upload class

Image Upload class

<?php 
/* 
# Example Usage:-                                                             
#                    Save this file as "UploadFile.class.php"                 
# 
#    Create a new PHP file and call it upload.php it should look like          

# <?php
# 
#    require_once("UploadFile.class.php");                                     
#    //Delete the comments below or you will get parse errors                 
#  
# $up = new UploadImage($nameofimagefield, <-name of your file field with $     
#                        102400,  <-max file size in bytes                     
#                        100,    <-max file height                             
#                        700, <-max file width                                  
#                        "banner", <-name of your file field                         
#                        "c:/php/uploads", <-path to upload directory 
#                        $rename_file=true); <- default is true set to false 
#                                    if you don't want the file renamed         
#   
# 
#         if ($submit) {                                                         
#          if($up->ValidateUpload()) {                                         
#                                     $up->CopyFile();                             
#                                              }                                   
#                    }                                                         
#      $up->PrintForm(102400);    <-max file size for html form same as above         
#                  ?>                                                              


*/ 

    /*
    Random name function needed to provide a name for 
    any files that are renamed 
   */ 

function  RandomFile($pass_len=12) { 
  
                  $allchar = "abcdefghijklmnopqrstuvwxyz" ; 
                    $str = "" ; 
                  mt_srand (( double) microtime() * 1000000 ); 
                  for ( $i = 0; $i<$pass_len ; $i++ ) 
                  $str .= substr( $allchar, mt_rand (0,25), 1 ) ; 
                  return $str ; 

        }    

        /*
        Start of our class 
        */ 

    class UploadImage { 

                   var $image; 
                   var $imagesize; 
                   var $max_file_size; 
                   var $max_file_height; 
                   var $max_file_width; 
                   var $allowed; 
                   var $rename_file; 
                   var $path; 
                    
             /*
             Construtor-This will run when our class is sub 
            */ 
     
         
         function UploadImage($image, 
                              $max_file_size, 
                              $max_file_height, 
                              $max_file_width, 
                              $field_name, 
                              $path, 
                              $rename_file=true) { 



             $this->image=$image; 
             $this->max_file_size=$max_file_size; 
             $this->max_file_height=$max_file_height; 
             $this->max_file_width=$max_file_width; 
             $this->allowed = array(".gif"=>"1", 
                                     ".jpg"=>"2", 
                                     ".jpeg"=>"2", 
                                     ".png"=>"3", 
                                     ".swf"=>"4",            
                                     ".psd"=>"5", 
                                    ".bmp"=>"6"); 
             $this->field_name = $field_name; 
             $this->path = $path; 
             $this->rename_file = $rename_file; 
        } 

        /*
         Validate the form- This method will validate 
         the form and print out an error message if needed 
        */ 

        function ValidateUpload() { 

            /*
            Get the size in kb of the file and 
            prints an error is it exceed max_file_size 
            */ 

             if ($this->max_file_size <  filesize($this->image)) { 

                  print("<span style=\"color:red;\">ERROR: Your File: " 
                    .$_FILES[$this->field_name]["name"]." is ".filesize($this->image). 
                    " KB, the max file size allowed  is " 
                    .$this->max_file_size."</span>");   

                  return false; 

             } 

             /*
              gets the width of the file and prints an error if 
                file width is greater than max_file_width 
             */ 

              $this->imagesize=getimagesize($this->image); 
               
                if ($this->max_file_width < $this->imagesize[0]) { 
                     
                 print("<span style=\"color:red;\">ERROR:<br />Your File: " 
                    .$_FILES[$this->field_name]["name"]." is ".$this->imagesize[0]. 
                    " pixels wide, the max file width allowed is " 
                    .$this->max_file_width."</span>");   
                     
                    return false; 
                       
                } 
                 
                 /*
                      gets the height of the file and prints an error if 
                    file height is greater than max_file_width 
                 */ 

                 if ($this->max_file_height < $this->imagesize[1]) { 

                     print("<span style=\"color:red;\">ERROR:<br />Your File: " 
                    .$_FILES[$this->field_name]["name"]." is ".$this->imagesize[1]. 
                    " pixels high, the max file height allowed  is " 
                    .$this->max_file_height."<span>");   

                      return false; 

                } 

                    /*
                          gets the filetype and checks it against 
                          allow types and returns an error if not in array 
                    */ 

                   if (!in_array($this->imagesize[2], $this->allowed)) { 

                        print("<span style=\"color:red;\">ERROR:<br />Your File: " 
                    .$_FILES[$this->field_name]["name"]." is not included 
                     in the list of allowed filetype</span>" 
                    );   

                      return false; 

                } 

                 /*
                 COOL:- no errors so lets get the file 
                */ 

                return true; 
        } 

          /* 
          This mehod will print the form out on our page 
         */   

        function PrintForm($max_file_size) { 

              global $PHP_SELF; 

              print("<form action=\"$PHP_SELF\" method=\"post\" enctype=\"multipart/form-data\"></br>\n"); 
              print("<input type=file name=$this->field_name><br>\n");     
              print("<input type=hidden name=max_file_size value=".$max_file_size."><br>\n"); 
              print("<input type=submit name=submit><br>\n"); 
              print("</form>"); 


     /*
     This method will copy our file to the folder of 
      your choice and rename it if selected rename it 
   */ 
 
  function CopyFile() { 
      if($this->rename_file) { 

          /*
          this will find out our file extension which 
          we need for renaming it. 
         */ 

          global $name, $ext; 

      switch($_FILES[$this->field_name]["type"]) { 

       case 'image/gif'; 
       $ext="gif"; 
       break; 

        case 'image/jpeg'; 
       $ext="jpg"; 
       break; 
  
        case 'image/pjpeg'; 
       $ext="jpg"; 
       break; 

        case 'image/png'; 
       $ext="png"; 
       break; 

        case 'application/x-shockwave-flash'; 
       $ext="swf"; 
       break; 

       case 'image/psd'; 
       $ext="psd"; 
       break; 

       case 'image/bmp'; 
       $ext="bmp"; 
       break; 
     } 
  
      /*
        Let's rename our file and then copy it to the directory 
      */ 

       $name=RandomFile(); 
  
           if(!@copy($_FILES[$this->field_name]["tmp_name"],$this->path."/".$name.".".$ext)) { 

               print("<b>There has been an error while uploading Filename:".$_FILES[$this->field_name]["name"] ." </b>"); 

           } else { 

               print("Filename: ".$_FILES[$this->field_name]["name"] ." has been uploaded"); 
   
           } 

              } else { 

                   /*
                   if you don't want the file renamed then this will run 
                   let's make sure the file doesn't exist already and if 
                   it does let's return an error 
                 */ 

           if(!file_exists($this->path."/".$_FILES[$this->field_name]["name"])) { 

                     if(!copy($_FILES[$this->field_name]["tmp_name"],$this->path."/". $_FILES[$this->field_name]["name"])) { 

              print("There has been an error uploading".$_FILES[$this->field_name]["name"]."please try adain"); 
                  
               } else { 
  
                   print("Filename:".$_FILES[$this->field_name]["name"]." has been uploaded"); 

                   } 
           } else { 

               print("ERROR: A file by this name already exists"); 
    
                   } 

              } 

          } 

    } 

?>