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Image Resize and water marking

February 4, 2012 Leave a comment

<?php

/**
* Image Resize class
*
* @package File operation
* @subpackage admin
* @author kirandeepu
* @version Basic version
*/

class imageResize
{
public static function Resize($imagename,$width,$height)
{

$extension = explode(“.”, $imagename);

if(preg_match(“/jpg|JPG|jpeg|JPEG/”, end($extension)))
{
$src_image = imagecreatefromjpeg($imagename);
}
elseif(preg_match(“/png|PNG/”, end($extension)))
{
$src_image = imagecreatefrompng($imagename);
}
elseif(preg_match(“/gif|GIF/”, end($extension)))
{
$src_image = imagecreatefromgif($imagename);
}
elseif(preg_match(“/bmp|BMP/”, end($extension)))
{
$src_image = imagecreatefrombmp($imagename);
}

$old_x = imagesx($src_image);
$old_y = imagesy($src_image);

if($old_x > $old_y)
{
$thumb_w = $width;
$thumb_h = $old_y*($height/$old_x);
}

if($old_x < $old_y)
{
$thumb_w = $old_x*($width/$old_y);
$thumb_h = $height;
}

if($old_x == $old_y)
{
$thumb_w = $width;
$thumb_h = $height;
}

$dest_image = imagecreatetruecolor($thumb_w, $thumb_h);
imagecopyresized($dest_image, $src_image, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);

return $dest_image;

}

/*
* image watermark function
* $watermarklogo this is for watermark logo , $watermarkimage this is for source image to be watermarked
* caution:source file will be replaced(if u dont need to replace sourc file then edit this linne imagejpeg($image,$watermarkimage); )
*/

function create_watermark($watermarklogo,$watermarkimage) {

$watermark = imagecreatefrompng($watermarklogo);
$watermark_width = imagesx($watermark);
$watermark_height = imagesy($watermark);
$image = imagecreatetruecolor($watermark_width, $watermark_height);
$image = imagecreatefromjpeg($watermarkimage);
$size = getimagesize($watermarkimage);
$dest_x = $size[0] – $watermark_width – 40;
$dest_y = $size[1] – $watermark_height – 40;
imagecopymerge($image, $watermark, $dest_x, $dest_y, 0, 0, $watermark_width, $watermark_height,50);
imagejpeg($image,$watermarkimage);
imagedestroy($image);
imagedestroy($watermark);
return true;
}
//checking for valid images
}

//for converting bmp images
function ConvertBMP2GD($src, $dest = false) {
if(!($src_f = fopen($src, “rb”))) {
return false;
}
if(!($dest_f = fopen($dest, “wb”))) {
return false;
}
$header = unpack(“vtype/Vsize/v2reserved/Voffset”, fread($src_f,14));
$info = unpack(“Vsize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vncolor/Vimportant”,fread($src_f, 40));

extract($info);
extract($header);

if($type != 0x4D42) { // signature “BM”
return false;
}

$palette_size = $offset – 54;
$ncolor = $palette_size / 4;
$gd_header = “”;
// true-color vs. palette
$gd_header .= ($palette_size == 0) ? “\xFF\xFE” : “\xFF\xFF”;
$gd_header .= pack(“n2”, $width, $height);
$gd_header .= ($palette_size == 0) ? “\x01” : “\x00”;
if($palette_size) {
$gd_header .= pack(“n”, $ncolor);
}
// no transparency
$gd_header .= “\xFF\xFF\xFF\xFF”;

fwrite($dest_f, $gd_header);

if($palette_size) {
$palette = fread($src_f, $palette_size);
$gd_palette = “”;
$j = 0;
while($j < $palette_size) {
$b = $palette{$j++};
$g = $palette{$j++};
$r = $palette{$j++};
$a = $palette{$j++};
$gd_palette .= “$r$g$b$a”;
}
$gd_palette .= str_repeat(“\x00\x00\x00\x00”, 256 – $ncolor);
fwrite($dest_f, $gd_palette);
}

$scan_line_size = (($bits * $width) + 7) >> 3;
$scan_line_align = ($scan_line_size & 0x03) ? 4 – ($scan_line_size &
0x03) : 0;

for($i = 0, $l = $height – 1; $i < $height; $i++, $l–) {
// BMP stores scan lines starting from bottom
fseek($src_f, $offset + (($scan_line_size + $scan_line_align) *
$l));
$scan_line = fread($src_f, $scan_line_size);
if($bits == 24) {
$gd_scan_line = “”;
$j = 0;
while($j < $scan_line_size) {
$b = $scan_line{$j++};
$g = $scan_line{$j++};
$r = $scan_line{$j++};
$gd_scan_line .= “\x00$r$g$b”;
}
}
else if($bits == 8) {
$gd_scan_line = $scan_line;
}
else if($bits == 4) {
$gd_scan_line = “”;
$j = 0;
while($j < $scan_line_size) {
$byte = ord($scan_line{$j++});
$p1 = chr($byte >> 4);
$p2 = chr($byte & 0x0F);
$gd_scan_line .= “$p1$p2”;
} $gd_scan_line = substr($gd_scan_line, 0, $width);
}
else if($bits == 1) {
$gd_scan_line = “”;
$j = 0;
while($j < $scan_line_size) {
$byte = ord($scan_line{$j++});
$p1 = chr((int) (($byte & 0x80) != 0));
$p2 = chr((int) (($byte & 0x40) != 0));
$p3 = chr((int) (($byte & 0x20) != 0));
$p4 = chr((int) (($byte & 0x10) != 0));
$p5 = chr((int) (($byte & 0x08) != 0));
$p6 = chr((int) (($byte & 0x04) != 0));
$p7 = chr((int) (($byte & 0x02) != 0));
$p8 = chr((int) (($byte & 0x01) != 0));
$gd_scan_line .= “$p1$p2$p3$p4$p5$p6$p7$p8”;
} $gd_scan_line = substr($gd_scan_line, 0, $width);
}

fwrite($dest_f, $gd_scan_line);
}
fclose($src_f);
fclose($dest_f);
return true;
}

function imagecreatefrombmp($filename) {
$tmp_name = tempnam(“/tmp”, “GD”);
if(ConvertBMP2GD($filename, $tmp_name)) {
$img = imagecreatefromgd($tmp_name);
unlink($tmp_name);
return $img;
} return false;
}

?>

Categories: Image

Image Resize

January 4, 2012 Leave a comment

<?php function filecheck($imagename) {
$extension = explode(“.”, $imagename);
$image =”0″;
if(preg_match(“/jpg|JPG|jpeg|JPEG/”, end($extension)))
{
$image =”1″;
}
elseif(preg_match(“/png|PNG/”, end($extension)))
{
$image =”1″;
}
elseif(preg_match(“/gif|GIF/”, end($extension)))
{
$image =”1″;
}
elseif(preg_match(“/bmp|BMP/”, end($extension)))
{
$image =”1″;
}
return $image;
}

//error_reporting(0);

function get_slug($data) {
return str_replace (‘ ‘,’_’,$data);
}
if(isset($_POST[‘submit’]))
{

if($_FILES[‘image1’][‘name’])
{
$fimage1=basename($_FILES[‘image1’][‘name’]);
$upload_dir=”uploads/images/”;
$sim1=filecheck($fimage1);

$random=rand(1,10000);
if($sim1==1) {
$upload_file=$upload_dir.get_slug($random.basename($_FILES[‘image1’][‘name’]));
move_uploaded_file($_FILES[‘image1’][‘tmp_name’],$upload_file);
$im1=basename($_FILES[‘image1’][‘name’]);
}

if(!empty($im1)) {
$image_name1=get_slug($random.basename($_FILES[‘image1’][‘name’]));
} else {
$image_name1=””;
}
$imagefolder=’uploads/images/’;
$thumbsfolder=’uploads/thumb/’;
$width=’100′;
$height=’100′;
$nwidth=’400′;
$nheight=’400′;

require_once(‘includes/imageResize.class.php’);
if(!empty($im1)) {
$fileSavePath=$imagefolder.$image_name1;
$newFileName=$thumbsfolder.”tn_”.$image_name1;
list($width1,$height1)=getimagesize($fileSavePath);

$y=$width1;
$x=$height1;
//$x=imagesx($fileSavePath);
// $y=imagesy($fileSavePath);
if($x>700 || $y>700) {
imagejpeg(imageResize::Resize($fileSavePath,$nwidth,$nheight),$fileSavePath);
}
imagejpeg(imageResize::Resize($fileSavePath,$width,$height),$newFileName);
}
}

}

?>

 

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”&gt;
<html xmlns=”http://www.w3.org/1999/xhtml”&gt;
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″ />
<title>Untitled Document</title>
</head>

<body>

<form method=”POST” action=”” enctype=”multipart/form-data” >
<input name=”image1″ type=”file” id=”image1″ />

<input type=”submit” id=”submit” name=”submit” value=”Submit” />
</body>
</html>

Categories: Image