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Title : crop and resize image class using gd library function
Categories : PHP, PHP Classes, GD image library, Graphics Click here to Update Your Picture
rajesh patel
Date : May 03rd 2007
Grade : 3 of 5 (graded 8 times)
Viewed : 7345
File : 4626.php
Images : No Images for this code example.
Search : More code by rajesh patel
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This class gives crop and resize image with given width and height parameters and also gives uploading facilities. this class uses gd library functions

Please also see attached file above.

<?php
/********
MODIFY ON 6-12-06    By Raj
CLASS FOR IMAGE UPLOAD,IMAGE CROP,IMAGE RESIZE,SIMPLE UPLOAD
//FOR RESIZE AND CROP THERE SHOULD BE FILE EXISTS IN SOMEWHERE THEN WE USE THAT FILE FOR OPERATION
WE USED DIRECTLY getResizeImage AND getCropImage
*********/
Class ImageUpload
{
    var
$pathFile;
    var
$originalFileName;   
    var
$SO;
    var
$sizeMaxFileName = 20;
    var
$extensionFile;
    var
$nameFile;
    var
$CurrentBit=0;
   function
ClassUpload()
    {
    }
    function
setPath($pathFile)
    {
       
$this->pathFile = $pathFile;
    }

    function
setSizeMaxFileName($sizeMaxFileName)
    {
       
$this->sizeMaxFileName = $sizeMaxFileName;
    }

    function
setOriginalFileName($originalFileName)
    {
       
$this->originalFileName = $originalFileName;
    }

    function
getOriginalFileName()
    {
        return
$this->originalFileName;
    }
    function
getNameFile()
    {
        return
$this->nameFile;
    }
    function
RandomName($nameLength) {
       
$name = "";
        for (
$index = 1; $index <= $nameLength; $index++)
        {
             
mt_srand((double) microtime() * 1000000);
             
$randomNumber = mt_rand(1, 62);
             if (
$randomNumber < 11)
                 
$name .= Chr($randomNumber + 48 - 1); // [ 1,10] => [0,9]
             
else if ($randomNumber < 37)
                 
$name .= Chr($randomNumber + 65 - 10); // [11,36] => [A,Z]
             
else
                 
$name .= Chr($randomNumber + 97 - 36); // [37,62] => [a,z]
       
}
       
$name = $name."_".time();
       
$this->formatNameFile();
       
$this->formatExtensionFile();
       
$this->originalFileName = $this->nameFile."_".$name.".".$this->extensionFile;       
    }
    function
InvalidCaracter($var)
    {
       
$a="ֱבֹיֽם׃ףתַחֳדְאֲגֺך־מװפױץ& -!@#$%¨&*()_+}=}{[]^~?/:;><,'´`\"\\÷";
       
$b="AaEeIiOoUuCcAaAaAaEeIiOoOoUue___________________________________";
       
$var = strtr($var,$a,$b);
       
$var = strtolower($var);
        return
$var;
    }
    function
formatNameFile()
    {
       
$originalFileName = $this->originalFileName;   
       
$posDivisionNameExtension = strpos($originalFileName,".");
       
$nameFile  = substr($originalFileName,0,$posDivisionNameExtension);   
       
$nameFile  = $this->InvalidCaracter($nameFile);               
       
$this->nameFile = $nameFile;
    }
    function
formatExtensionFile()
    {
       
$originalFileName = $this->originalFileName;
       
$invertFile = strrev($originalFileName);
       
$posDivisionNameExtension = strpos($invertFile,".");
       
$extensionFile = substr($invertFile,0,$posDivisionNameExtension);
       
$extensionFile = strrev($extensionFile);
       
$extensionFile = $this->InvalidCaracter($extensionFile);
       
$this->extensionFile = $extensionFile;
    }   
    function
getExtensionFile()
    {
        return
$this->extensionFile;
    }       
    function
setNameAndExtension()
    {
       
$this->formatNameFile();
       
$this->formatExtensionFile();
    }
    function
formatOriginalFileName()
    {
       
$this->formatNameFile();
       
$this->formatExtensionFile();
       
$sizeFileName = strlen($this->nameFile);       
        if (
$sizeFileName>$this->sizeMaxFileName)
        {
             
$this->nameFile = substr($this->nameFile,0,$this->sizeMaxFileName);
        }
       
$this->originalFileName = $this->nameFile. "." .$this->extensionFile;
    }
    function
setSO($SO)
    {
       
$this->SO = $SO;
    }
    function
getDivisionDIR()
    {
       
$SO = $this->SO;
       
$SO = strtolower($SO);
        switch (
$SO)
        {
            case
"w":
               
$divisionDir = "\\";
                break;
            case
"l":
               
$divisionDir = "/";
                break;
            case
"u":
               
$divisionDir = "/";
                break;
        }

        return
$divisionDir;
    }
   
//FILE IS A FILENAME WITHOUT FULLPATH
   
function isFileExist($file)
    {
       
$x="";
       
$file = $this->originalFileName;
       
$openDir = @opendir($this->pathFile);
        while ((
$filesServer=@readdir($openDir))!=false)
        {
            if (
is_file($this->pathFile.$this->getDivisionDIR().$filesServer)):
                if (
$filesServer==$file)
                {
                   
$x = true;
                    break;
                }
                else
                {
                   
$x = false;
                }
            else:
               
$x = false;
            endif;
       
        }
        @
closedir($openDir);
        return
$x;
    }
   
//FILE IS A FILENAME WITHOUT FULLPATH i.e. $_FILES['name']
   
function uploadCopyFile($file,$final_name)
    {
       
$x = false;
        if(
$final_name!="")
           
$path_upload_main = $this->pathFile.$this->getDivisionDIR().$final_name;
        else
           
$path_upload_main = $this->pathFile.$this->getDivisionDIR().$this->originalFileName;
       
$openDir = @opendir($this->pathFile);
        if (@
copy($file,$path_upload_main)):
            if (@
is_uploaded_file($file))
            {
                   
$x = true;
            }
        endif;
        @
closedir($openDir);
        return 
$x;
    }
     
//FILE IS A FILENAME WITHOUT FULLPATH i.e.  $_FILES['tmp_name']
   
function uploadMoveFile($file,$final_name="")
    {
       
$x = false;
        if(
$final_name!="")
           
$pathUpload = $this->pathFile.$this->getDivisionDIR().$final_name;
        else
           
$pathUpload = $this->pathFile.$this->getDivisionDIR().$this->originalFileName;
         if (@
move_uploaded_file($file,$pathUpload)):
            if (@
is_uploaded_file($file))
            {
               
$x = true;
            }
        endif;
        return
$x;
    }
/******FOR COYING IMAGE ONE TO OTHER PLACE //RETURN TRUE/FASLE
    image_name_field= IS A FILENAME WITHOUT FULLPATH i.e.$_FILES['name']
    folder_path =IS A FOLDER PATH WITHOUT FILENAME
    final_name= FULLPATH WITH FILENAME IN THAT UPLOADED FILE IS STORED
  ****/
function upload_copyimage($image_name_field, $folder_path,$final_name="")
       {
       
$this->setSizeMaxFileName(25);
       
$this->setSO("l");        //FOR WINDOWS USER w ELSE l
       
$this->setPath($folder_path);
       
$this->setOriginalFileName($image_name_field);
       
$this->formatOriginalFileName();
       
$this->setNameAndExtension();

       
$nameFileFull  = $this->getOriginalFileName();
         if ((
$this->isFileExist($image_name_field))):
                   
$upload_result=false;
         else:
                if (!(
$this->uploadCopyFile($image_name_field,$final_name))):
                           
$upload_result=true;
                else:
                           
$upload_result=true;
                    endif;
            endif;
       
        return
$upload_result;
        }
/******FOR MOVING IMAGE ONE TO OTHER PLACE //RETURN TRUE/FASLE
    image_name_field= IS A FILENAME WITHOUT FULLPATH i.e.$_FILES['tmp_name']
    folder_path =IS A FOLDER PATH WITHOUT FILENAME
    final_name= FULLPATH WITH FILENAME IN WHICH UPLOADED FILE IS STORED
  ****/
function upload_moveimage($image_temp_name, $folder_path,$final_name="")
       {
       
$this->setSizeMaxFileName(25);
       
$this->setSO("l");//FOR WINDOWS USER w ELSE l
       
$this->setPath($folder_path);
       
$this->setOriginalFileName($image_temp_name);
       
$this->formatOriginalFileName();
       
$this->setNameAndExtension();
       
$nameFileFull  = $this->getOriginalFileName();
         if ((
$this->isFileExist($image_temp_name))):
                   
$upload_result=false;
         else:
                if (!(
$this->uploadMoveFile($image_temp_name,$final_name))):
                           
$upload_result=true;
                else:
                           
$upload_result=true;
                    endif;
            endif;

        return
$upload_result;
        }
/****USED BY getCrop
    RETURN CROPING IMAGE FOR GIVVEN WIDTH AND HEIGHT
    TYPE =IS SIDE OF CROP HEIGHT OR WIDTH
****/
function crop_image($old_image,$new_image,$width,$height,$type="")
{
   
$dimensions = getimagesize($old_image);
   
$old_x=$dimensions[0];
   
$old_y=$dimensions[1];
   
    if (
$old_x < $width)
    {
       
$width=$old_x;
    }
    if (
$old_y < $height)
    {
       
$height=$old_y;
    }
   
$canvas = imagecreatetruecolor($width,$height);
   
$system= substr(strrchr($old_image, "."), 1 );
    if (
preg_match('/png/',$system))
        {
           
$piece = imagecreatefrompng($old_image);
        }
    else if (
preg_match('/gif/',$system))
        {
           
$piece = imagecreatefromgif($old_image);
        }
    else
$piece = imagecreatefromjpeg($old_image);

       
$newwidth = $dimensions[0] ;/// 2;
       
$newheight = $dimensions[1];// / 2;
   
if ($newwidth>$width)
    {
       
$cropLeft = ($newwidth/2) - ($width/2);
       
$newwidth=$width;
    }
    else     
$cropLeft = 0;
    if (
$newheight > $height)
    {
       
$cropHeight = ($newheight/2) - ($height/2);
       
$newheight=$height;
    }
    else     
$cropHeight = 0;//($newheight);

   
if($system=="gif")
   {
     
$transparent = imagecolorallocate($canvas, "255", "255", "255");
     
imagefill($canvas, 0, 0, $transparent);
   }
   
// Generate the cropped image
   
@imagecopyresized($canvas, $piece, 0,0, $cropLeft, $cropHeight,$newwidth, $newheight, $width, $height);
    if (
preg_match('/png/',$system))
        {
           
imagepng($canvas,$new_image);
        }
    else if (
preg_match('/gif/',$system))
        {
           
imagegif($canvas,$new_image,90);
        }
    else
imagejpeg($canvas,$new_image,90);
    @
imagedestroy($canvas);
    @
imagedestroy($piece);
   
}
//USED BY getCrop
//RETURN RESIZED IMAGE FOR GIVEN WIDTH AND HEIGHT
function resize_crop($name,$filename,$new_w,$new_h)
{
   
$system= substr(strrchr($name, "."), 1 );
    if (
preg_match('/jpg|jpeg/',$system))
        {
           
$src_img=imagecreatefromjpeg($name);
        }
    else if (
preg_match('/png/',$system))
        {
           
$src_img=imagecreatefrompng($name);
        }
    else if (
preg_match('/gif/',$system))
        {
           
$src_img=imagecreatefromgif($name);
        }
    else
$src_img=imagecreatefromjpeg($name);   

   
$old_x=imagesx($src_img);
   
$old_y=imagesy($src_img);
    if (
$old_x > $old_y)
    {
       
$thumb_w=$old_x*($new_h/$old_y);
       
$thumb_h=$new_h;
        if(
$thumb_w<$new_w)
            {
               
$diff=($new_w-$thumb_w);
               
$thumb_w=$new_w;
               
$thumb_h=($new_h+$diff);
            }
        }
    if (
$old_x < $old_y)
    {
       
$thumb_w=$new_w;
       
$thumb_h=$old_y*($new_w/$old_x);
        if(
$thumb_h<$new_h)
            {
               
$diff=($new_h-$thumb_h);
               
$thumb_h=$new_h;
               
$thumb_w=($new_w+$diff);
            }
    }

    if (
$old_x == $old_y)
    {
        if(
$new_w>$new_h)
        {
           
$thumb_w=$new_w;
           
$thumb_h=$new_w;
        }
        else if(
$new_w<$new_h)
        {
           
$thumb_w=$new_h;
           
$thumb_h=$new_h;
        }
        else
        {
       
$thumb_w=$new_w;
       
$thumb_h=$new_h;
        }
    }

   
$dst_img= imagecreatetruecolor($thumb_w,$thumb_h);
     if(
$system=="gif")
     {
       
$transparent = imagecolorallocate($dst_img, "255", "255", "255");
       
imagefill($dst_img, 0, 0, $transparent);
     }
   
imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);
    if (
preg_match("/png/",$system))
        {
           
imagepng($dst_img,$filename);
        }
    else if (
preg_match('/gif/',$system))
        {
           
imagegif($dst_img,$filename);
        }
    else
        {
           
imagejpeg($dst_img,$filename);
        }
   
imagedestroy($dst_img);
   
imagedestroy($src_img);
}
   
//USED BY   getResize
function resizenew($name,$filename,$new_w,$new_h)
{
   
$system= substr(strrchr($name, "."), 1 );
    if (
preg_match('/jpg|jpeg/',$system))
        {
           
$src_img=imagecreatefromjpeg($name);
        }
    else if (
preg_match('/png/',$system))
        {
           
$src_img=imagecreatefrompng($name);
        }
    else if (
preg_match('/gif/',$system))
        {
           
$src_img=imagecreatefromgif($name);
        }
    else
$src_img=imagecreatefromjpeg($name);

   
$old_x=@imagesx($src_img);//200
   
$old_y=@imagesy($src_img);//200
   
if ($old_x > $old_y)
    {
//lowest value assigned to final
           
if($new_w>$new_h)
            {
               
$thumb_h=$new_h;
               
$thumb_w=$old_x*($new_h/$old_y);
                if(
$thumb_w>$new_w)
                {
                   
$thumb_w=$new_w;
                   
$thumb_h=($new_w*$old_y)/$old_x;
                }
            }
            else if(
$new_w<$new_h)
            {
               
$thumb_w=$new_w;
               
$thumb_h=($new_w*$old_y)/$old_x;
               if(
$thumb_h>$new_h)
                {
                   
$thumb_h=$new_h;
                   
$thumb_w=$old_x*($new_h/$old_y);
                }
            }
            else
            {
               
$thumb_w=$new_w;
               
$thumb_h=($new_w*$old_y)/$old_x;
                if(
$thumb_h>$new_h)
                {
                   
$thumb_h=$new_h;
                   
$thumb_w=$old_x*($new_h/$old_y);
                }
            }
        }
    if (
$old_x < $old_y)
    {
//lowest value assigned to final
           
if($new_w>$new_h)
            {
               
$thumb_h=$new_h;
               
$thumb_w=$old_x*($new_h/$old_y);
                if(
$thumb_w>$new_w)
                {
                   
$thumb_w=$new_w;
                   
$thumb_h=($new_w*$old_y)/$old_x;
                }
            }
            else if(
$new_w<$new_h)
            {
               
$thumb_w=$new_w;
               
$thumb_h=($new_w*$old_y)/$old_x;
                if(
$thumb_h>$new_h)
                {
                   
$thumb_h=$new_h;
                   
$thumb_w=$old_x*($new_h/$old_y);
                }
            }
            else
            {
               
$thumb_h=$new_h;
               
$thumb_w=$old_x*($new_h/$old_y);
                 if(
$thumb_w>$new_w)
                {
                   
$thumb_w=$new_w;
                   
$thumb_h=($new_w*$old_y)/$old_x;
                }
            }
    }

    if (
$old_x == $old_y) //both same
   
{ //lowest value assigned to final
       
if($new_w>$new_h)
        {
           
$thumb_h=$new_h;
           
$thumb_w=($new_h*$old_x)/$old_y;
             if(
$thumb_w>$new_w)
                {
                   
$thumb_w=$new_w;
                   
$thumb_h=($new_w*$old_y)/$old_x;
                }

        }
        else if(
$new_w<$new_h)
        {
           
$thumb_w=$new_w;
           
$thumb_h=($new_w*$old_y)/$old_x;
            if(
$thumb_h>$new_h)
                {
                   
$thumb_h=$new_h;
                   
$thumb_w=$old_x*($new_h/$old_y);
                }
        }
        else
        {
           
$thumb_w=$new_w;
           
$thumb_h=$new_h;
        }
    }

   
$dst_img= @imagecreatetruecolor($thumb_w,$thumb_h);
     if(
$system=="gif")
     {
       
$transparent = @imagecolorallocate($dst_img, "255", "255", "255");
        @
imagefill($dst_img, 0, 0, $transparent);
     }
    @
imagecopyresampled($dst_img,$src_img,0,0,0,0,$thumb_w,$thumb_h,$old_x,$old_y);
    if (
preg_match("/png/",$system))
        {
           
imagepng($dst_img,$filename);
        }
    else if (
preg_match('/gif/',$system))
        {
           
imagegif($dst_img,$filename);
        }
    else
        {
           
imagejpeg($dst_img,$filename);
        }
   
imagedestroy($dst_img);
   
imagedestroy($src_img);
}
/*****
    //FOR RETURN FINAL IMAGE AFTER RESIZE AND CROP
    $final_path=FULLPATH WITH FILENAME IN WHICH CROPPED IMAGE WILL STORED
    $path= PATH WITHOUT FILENAME IN WHICH $file_name WAS STORED
    //SAMPLE=getCrop($ORIGINAL_FOLDER,"2.JPG",PHOTO_CROP_WIDTH,PHOTO_CROP_HEIGHT,$final_path);
*****/
function getCrop($path,$file_name,$width,$height,$final_path)
{

           
$fold_large=$path."/".$file_name;
        @
chmod($fold_large,0777);
       
$size = @getimagesize($fold_large);//300/293
                 
if($size[0]>$width && $size[1]>$height)//both large
                 
{//resize + crop
                     
$new_name=$path."/rajbl_".$file_name;
                     
$this->resize_crop($fold_large,$new_name,$width,$height);
                     @
chmod($new_name,0777);