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  • Upload and Resize an Image with PHP

    September 3, 2013

    Here is a simple PHP script to re-sizing image into different dimensions. It’s very useful to your web projects to save hosting space and bandwidth to reduce the original image to compressed size.

    PHP Code :-

    This script resize an Image into two 60px and 25px. Take a look at $newwidth you have to modify size values.

    View Code PHP
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    <?php
 define ("MAX_SIZE","400");
 $errors=0;
 if($_SERVER["REQUEST_METHOD"] == "POST")
 {
    $image =$_FILES["file"]["name"];
     $uploadedfile = $_FILES['file']['tmp_name'];
     if ($image)
    {
          $filename = stripslashes($_FILES['file']['name']);
          $extension = getExtension($filename);
        $extension = strtolower($extension);
        if (($extension != "jpg") && ($extension != "jpeg")&& ($extension != "png") && ($extension != "gif"))
        {
            echo ' Unknown Image extension ';
            $errors=1;
        }else{
            $size=filesize($_FILES['file']['tmp_name']);
            if ($size > MAX_SIZE*1024)
            {
                echo "You have exceeded the size limit";
                $errors=1;
            }
            if($extension=="jpg" || $extension=="jpeg" )
            {
                $uploadedfile = $_FILES['file']['tmp_name'];
                $src = imagecreatefromjpeg($uploadedfile);
            }
            else if($extension=="png")
            {
                $uploadedfile = $_FILES['file']['tmp_name'];
                $src = imagecreatefrompng($uploadedfile);
            }
            else
            {
                $src = imagecreatefromgif($uploadedfile);
            }
            list($width,$height)=getimagesize($uploadedfile);
            $newwidth=60;
            $newheight=($height/$width)*$newwidth;
            $tmp=imagecreatetruecolor($newwidth,$newheight);
            $newwidth1=25;
            $newheight1=($height/$width)*$newwidth1;
            $tmp1=imagecreatetruecolor($newwidth1,$newheight1);
            imagecopyresampled($tmp,$src,0,0,0,0,$newwidth,$newheight,
            $width,$height);
            imagecopyresampled($tmp1,$src,0,0,0,0,$newwidth1,$newheight1,
            $width,$height);
            $filename = "images/". $_FILES['file']['name'];
            $filename1 = "images/small". $_FILES['file']['name'];
            imagejpeg($tmp,$filename,100);
            imagejpeg($tmp1,$filename1,100);
            imagedestroy($src);
            imagedestroy($tmp);
            imagedestroy($tmp1);
        }
 
    }
 
}
 
//If no errors registred, print the success message
 
if(isset($_POST['Submit']) && !$errors)
{
    // mysql_query("update SQL statement ");
    echo "Image Uploaded Successfully!";
}
 ?>

    Extention PHP funtion :-

    View Code PHP
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    function getExtension($str) {
 
         $i = strrpos($str,".");
         if (!$i) { return ""; }
         $l = strlen($str) - $i;
         $ext = substr($str,$i+1,$l);
         return $ext;
 }
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