Resizing images with php

[Anon]

Hi,
is it possible to resize images in php? and if it is possible, then how? and is it possible to see width and lenght of image with php? again, if possible, how 🙂
thanks

[Anon]

You can use the image functions to get the sixe of certain images. If you compile PHP with the GD libraries, you can manipulate them.

http://www.php.net/manual/en/ref.image.php

[Anon]

This is some script found here at phpbuilder, with modifications. Some of the script is in Norwegian - Sorry about that!

<?php
/
Update 2000-07-05
It was reported today that you get an error about
an invalid mysql link id on the last mysql_close
statement.

Look for MICHALE_VINCE_FIX to see the change

Thanks to Michael Vince
/

/*
 * Update 2000-02-08
 * The problem of the retrieved file always being named 
 * fileman.php3 seems to have been fixed.  
 *
 * Look for SANDER_BOSMAN_FIX to see the 2 additions.
 *
 * Thanks to Sander Bosman ([e-mail])
 */

/*
 * This script is for testing of sending and receiving files
 * from a mysql database using php3.
 *
 * This script was typed in by Mike Leidy ([e-mail]) and was
 * inspired by one written by Florian Dittmer ([e-mail]).
 *
 * Requred Table Schema:
 *
 * CREATE TABLE binary_data (
 *  id int(6) DEFAULT '0' NOT NULL auto_increment,
 *  description varchar(50) DEFAULT '' NOT NULL,
 *  bin_data longblob NOT NULL,
 *  filename varchar(50) DEFAULT '' NOT NULL,
 *  filesize varchar(50) DEFAULT '' NOT NULL,
 *  filetype varchar(50) DEFAULT '' NOT NULL,
 *  hits varchar(50) DEFAULT '' NOT NULL,
 *  PRIMARY KEY (id),
 *  KEY description (description),
 *  KEY hits (hits)
 * );
 *
 * Other Options:
 * -- added -O max_allowed_packet=24M to the startup command
 * -- changed in php3.ini upload_max_filesize = 10485760
 */

/*
*	Changes made by Torbjørn Engedal ([e-mail]) as well
*/

include('config.php');

include('database.php');
$bredde=@$bredde; //Width

db_connect();

$tbl = "nor_sak";//Some table name

	$query = "SELECT sak_bilde, sak_filetype, sak_filename, sak_bildew, sak_bildeh FROM $tbl WHERE sak_id = $sak_id";	
$res_id = db_query ($query);

if (! $res_id) {
    printf ("MySQL Error: (%d) %s<br><br>%s\n",
	mysql_errno (),
	mysql_error (),
	$query);
    mysql_close ($conn_id);
    exit ();
}

$row = mysql_fetch_array ($res_id);

if ($row) {
    $data = $row["sak_bilde"];
    $type = $row["sak_filetype"];

    /*
     * SANDER_BOSMAN_FIX
     */
    $filename = $row["sak_filename"];

    /*
     * SANDER_BOSMAN_FIX
     */

    if($bredde && ( $type == "image/x-png" || $type == "image/png"  || $type == "image/jpg" || $type == "image/jpeg" || $type == "image/pjpeg" )){//Sjekker om bildet skal "resizes" - resizer foreløpig bare for jpg-bilder.
    	//Henter informasjon om gammelt bilde
    	$bildew = $row["sak_bildew"];
    	$bildeh = $row["sak_bildeh"];
    	$forhold = $bildeh/$bildew;
    	#echo "Bredde: ",$bildew,"<br>Høyde: ",$bildeh,"<br>Forhold:",$forhold,"<br><br>";//debug


    	$new_w=$bredde;//Ny bredde - New width


	$new_h = ($new_w * $forhold);
	$new_h = ceil($new_h);//Ny høyde - New height

	#echo "Ny bredde: ",$new_w,"<br>Ny høyde: ",$new_h,"<br><br>";//debug

	$dst_img=ImageCreate($new_w,$new_h);

	$src_img=imagecreatefromstring($data);
	//$src_img=ImageCreateFromGif("bilde.php?sak_id=".$sak_id);

	ImageCopyResized($dst_img,$src_img,0,0,0,0,$new_w,$new_h,$bildew,$bildeh);		

	Header ("Content-disposition: filename=".$filename);
        Header ("Content-type: $type");	

	if($type == "image/jpg" || $type == "image/jpeg" || $type == "image/pjpeg")
		imagejpeg($dst_img);
	else if($type == "image/gif")
		ImageGif($dst_img);
	else if($type == "image/png" || $type == "image/x-png")
		imagepng($dst_img);
	else if($type == "image/wbmp")
		imagewbmp($dst_img);


     } else {



	    Header ("Content-disposition: filename=".$filename);

	    Header ("Content-type: $type");
	    echo $data;
     }

    exit ();
}

else {
    printf ("Det ble ikke funnet noen bilder for sak med sak_id= %d\n", $sak_id);
}

?>