adding resize image to my code

[stelthius]

Hi guys, back yet again lol...

 

Just wondering how i would alter my code to make it resize images to 100 x 100 my code is below any help is appretiated.

 

$field = "avatar"; //Use field name for avatar
//Check that we have a file
if((!empty($_FILES["avatar"])) && ($_FILES['avatar']['error'] == 0)) {
//Check if the file is JPEG/GIF and it's size is less than 15Kb
$filename = basename($_FILES['avatar']['name']);
$ext = substr($filename, strrpos($filename, '.') + 1);
if (($ext == "jpg" || $ext == "JPG" || $ext == "jpeg" || $ext == "gif") && ($_FILES["avatar"]["type"] == "image/jpeg") || ($_FILES["avatar"]["type"] == "image/pjpeg") || ($_FILES["avatar"]["type"] == "image/gif") && 
//the size below this line states it must be smaller than 15Kb
($_FILES["avatar"]["size"] < 15000)) {
//the line below this gives the uploaded file a random number name
$random_digit=rand(0000,9999);

//combine random digit to you file name to create new file name
//use dot (.) to combile these two variables
$newplus=$random_digit.".";
$subavatar=$newplus.$ext;
$subavatar = stripslashes($subavatar);

//Determine the path to which we want to save this file
$newname = dirname(__FILE__).'/userimg/'.$subavatar;
//Check if the file with the same name is already exists on the server
if (!file_exists($newname)) {
//Attempt to move the uploaded file to it's new place
if ((move_uploaded_file($_FILES['avatar']['tmp_name'],$newname))) {
$database->updateUserField($this->username,"avatar",$subavatar);
} else {
$form->setError($field, "* Error: A problem occurred during file upload!");
}
} else {
$form->setError($field, "* Error: File ".$_FILES["avatar"]["name"]." already exists");
}
} else {
$form->setError($field, "* Error: Only .jpg or .gif images please.");
}
} else {
$form->setError($field, "* Error: Your file was too big. It needs to be less than 15kb.");
}

 

Thanks Rick

[premiso]

imagecopyresized

 

Is that what you are looking for?

[stelthius]

Yes it is, but im unsure how to implement the function, i had a look there but i wasnt able to work it out, been at it to long its probably simple,

was just wondering if anyone could give a example.

 

Rick

[gevans]

<?php
function imageResizeWidth($iw, $sourcefile, $destfile){
$is = getimagesize($sourcefile);
$ih = $is[1] / ($is[0] / $iw);
$img_src = imagecreatefromjpeg($sourcefile);
$img_dst = imagecreatetruecolor($iw, $ih);
imagecopyresampled($img_dst, $img_src, 0, 0, 0, 0, $iw, $ih, $is[0], $is[1]);
if(!imagejpeg($img_dst, $destfile, 90)) return FALSE;
else return TRUE;
}
function imageResizeHeight($ih, $sourcefile, $destfile){
$is = getimagesize($sourcefile);
$iw = $is[0] / ($is[1] / $ih);
$img_src = imagecreatefromjpeg($sourcefile);
$img_dst = imagecreatetruecolor($iw, $ih);
imagecopyresampled($img_dst, $img_src, 0, 0, 0, 0, $iw, $ih, $is[0], $is[1]);
if(!imagejpeg($img_dst, $destfile, 90)) return FALSE;
else return TRUE;
}
?>

 

Those two functions let you re size by either height or width.

 

So you can set as 100px wide and use the second function, and it will retain the aspect ratio!

[premiso]

<?php
/**
* Make thumbs from JPEG, PNG, GIF source file
*
* $tmpname = $_FILES['source']['tmp_name'];   
* $size - max width size
* $save_dir - destination folder
* $save_name - tnumb new name
*
* Author:  LEDok - http://www.citadelavto.ru/
*/

function img_resize( $tmpname, $size, $save_dir, $save_name )
    {
    $save_dir .= ( substr($save_dir,-1) != "/") ? "/" : "";
        $gis       = GetImageSize($tmpname);
    $type       = $gis[2];
    switch($type)
        {
        case "1": $imorig = imagecreatefromgif($tmpname); break;
        case "2": $imorig = imagecreatefromjpeg($tmpname);break;
        case "3": $imorig = imagecreatefrompng($tmpname); break;
        default:  $imorig = imagecreatefromjpeg($tmpname);
        }

        $x = imageSX($imorig);
        $y = imageSY($imorig);
        if($gis[0] <= $size)
        {
        $av = $x;
        $ah = $y;
        }
            else
        {
            $yc = $y*1.3333333;
            $d = $x>$yc?$x:$yc;
            $c = $d>$size ? $size/$d : $size;
              $av = $x*$c;        //высота исходной картинки
              $ah = $y*$c;        //длина исходной картинки
        }   
        $im = imagecreate($av, $ah);
        $im = imagecreatetruecolor($av,$ah);
    if (imagecopyresampled($im,$imorig , 0,0,0,0,$av,$ah,$x,$y))
        if (imagejpeg($im, $save_dir.$save_name))
            return true;
            else
            return false;
    }

?>

 

Usage:

<?php
$field = "avatar"; //Use field name for avatar
//Check that we have a file
if((!empty($_FILES["avatar"])) && ($_FILES['avatar']['error'] == 0)) {
//Check if the file is JPEG/GIF and it's size is less than 15Kb
$filename = basename($_FILES['avatar']['name']);
$ext = substr($filename, strrpos($filename, '.') + 1);
if (($ext == "jpg" || $ext == "JPG" || $ext == "jpeg" || $ext == "gif") && ($_FILES["avatar"]["type"] == "image/jpeg") || ($_FILES["avatar"]["type"] == "image/pjpeg") || ($_FILES["avatar"]["type"] == "image/gif") &&
//the size below this line states it must be smaller than 15Kb
($_FILES["avatar"]["size"] < 15000)) {
//the line below this gives the uploaded file a random number name
$random_digit=rand(0000,9999);

//combine random digit to you file name to create new file name
//use dot (.) to combile these two variables
$newplus=$random_digit.".";
$subavatar=$newplus.$ext;
$subavatar = stripslashes($subavatar);

//Determine the path to which we want to save this file
$dir = dirname(__FILE__).'/userimg/';
$newname = $dir . $subavatar;

//Check if the file with the same name is already exists on the server
if (!file_exists($newname)) {
//Attempt to move the uploaded file to it's new place
if (img_resize($filename, 100 ,$dir , $subavatar)) {
$database->updateUserField($this->username,"avatar",$subavatar);
} else {
$form->setError($field, "* Error: A problem occurred during file upload!");
}
} else {
$form->setError($field, "* Error: File ".$_FILES["avatar"]["name"]." already exists");
}
} else {
$form->setError($field, "* Error: Only .jpg or .gif images please.");
}
} else {
$form->setError($field, "* Error: Your file was too big. It needs to be less than 15kb.");
}
?>

 

Un sure if that will work but that is the basic gist.

[stelthius]

Thank you for your guidence its 1st class

 

 

Rick