how to resize an image

[dearmoawiz]

hi guys

  hwz u all ....

    can any body tell me how we resize an image in php ??

      need urget response

                enjoy !!!!

                wizzz

[jonsjava]

oh kay

    effin youz gonna tawk liek tes

no

[dearmoawiz]

wts tht buddy?

[bluebutterflyofyourmind]

you can do a simple resize using html in the image tags

 

<img src="" height=xx width=xx />

 

This is useful for making thumbnails though dependnig on the size of the image, they may take a while to load.  also the width and height you would need to calculate to keep them proportional.

 

If you want to resize an image say for upload, before y ou save it to the server you have to go through a more complex process.  does the simpler method above suffice?  or to you need to resize the image being saved to a server?  what is your situation?

[dearmoawiz]

i need to resize the image being saved on server ... infact the real scenario is that i wanna build a photo album in php so there if i upload images i want that they resized in equal size and then saved on server ... so tht the real scenario did  u got my point???

[jonsjava]

ah, I gotcha. There are 2 ways you can do this:

1: use an open-source solution like ImgUpload

or

2: learn the image libraries built into PHP. I figured you would be more interested in reverse-engineering ImgUpload, though.

[jonsjava]

and if you want your own script to handle it:

<?php
/* WARNING: This version only works with JPG files */
$img = //Your image stuff goes here (according to how you are posting the data)
//Percent you want it to resize to
$percent = 0.75;


// Load image
$image = open_image(img);
if ($image === false) { die ('Unable to open image'); }

// Get original width and height
$width = imagesx($image);
$height = imagesy($image);

// New width and height


$new_width = $width * $percent;
$new_height = $height * $percent;

// Resample
$image_resized = imagecreatetruecolor($new_width, $new_height);
imagecopyresampled($image_resized, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);

// Display resized image
header('Content-type: image/jpeg');
imagejpeg($image_resized);
die();

?>

[litebearer]

also might look here...

 

http://www.nstoia.com/toh/technical/imageresize/index.php

 

Lite...