vb.org Archive - Random Image works as direct link, but doesn't work in the IMG tag...

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- - Random Image works as direct link, but doesn't work in the IMG tag... (https://vborg.vbsupport.ru/showthread.php?t=40363)

]

Code:

<br />

<b>Fatal error</b>:  Call to undefined function:  imagecreatefromjpeg() in <b>/blabla/sig.php</b> on line <b>27</b><br />

where line 27 is

Code:

$im = imagecreatefromjpeg($logos[$logo]);

]the code I use right now looks like this: (just making sure we are talking about same script and same things)

Code:

<?php

$logodir = "http://www.somewhere.com/pics/";



header('Content-Type: image/jpeg');

header('Content-Disposition: inline; filename=file.jpg');

header('Cache-Control: no-store, no-cache, must-revalidate');

header('Pragma: no-cache');



$logos = array

(

    $logodir . "1.jpg",

    $logodir . "2.jpg",

    $logodir . "3.jpg",

    $logodir . "4.jpg",

    $logodir . "5.jpg",

    $logodir . "6.jpg"

);



function make_seed() {

    list($usec, $sec) = explode(' ', microtime());

    return (float) $sec + ((float) $usec * 100000);

}

srand(make_seed());



$logo = rand(0, count ($logos) - 1);



$im = imagecreatefromjpeg($logos[$logo]);

Imagejpeg($im);

imagedestroy($im);



?>

hmm, look here:
http://www.php.net/manual/en/functio...tefromjpeg.php

its a standartfunction in php.
something with your php-installation seems not to be ok...

]I have tried it on 2 servers now... one in Germany and one in Holland. Both are installed by 2 difefrent peoples. Same result - doesn't work :confused:

]by the way... I don't blame you or something... I really appreciatte all your help... but I can't see meaning of creating an image from an EXISTED image, show it and then destroy it...

why not just push the existed image? :confused:

have tried it at my server, works perfect:
http://www.strategy-forum.de/test.php

Quote:

Originally posted by wooolF[RM]
by the way... I don't blame you or something... I really appreciatte all your help... but I can't see meaning of creating an image from an EXISTED image, show it and then destroy it...
why not just push the existed image? :confused:

i don't know why, its just the way php wants it ;)

hmm, maybe your servers have disabled this function, have tested it on another server too and works perfectly too

]ok... I got my friend to use it on his server (3rd server I'm trying to get it workk on).

It works! yay! now the problem is : all 6 pics I used was 25-30kb in size in perfect quality. After randomizing by this script all I get is blurred, low quality picture 8-9kb in size...

are there any ways to be sure that qulity at the end is the same as in the start?

btw : thanx for this workaround :)

]Anyway, here's updated version of my script that should at the output generate progressive JPEG with 100% quality.

Code:

<?php



/* Location of the pictures */

$logodir = "http://www.mpc.turbohost.net/wolfsig/";



/* Type of output (for browsers) */

header('Content-Type: image/jpeg');



/* No caching (for newer browsers) */

header('Cache-Control: no-store, no-cache, must-revalidate');



/* No caching (for older browsers) */

header('Pragma: no-cache');





/* Making an array with all pictures */

$logos = array

(

    $logodir . "1.jpg",

    $logodir . "2.jpg",

    $logodir . "3.jpg",

    $logodir . "4.jpg",

    $logodir . "5.jpg",

    $logodir . "6.jpg"

);





/* explode = explode an array */

/* microtime = return current UNIX timestamp with microseconds */



function make_seed() {

    list($usec, $sec) = explode(' ', microtime());

    return (float) $sec + ((float) $usec * 100000);

}



/* explode        = seed the random number generator */

srand(make_seed());





/* rand = seed the random number generator */

/* count = count elements in a variable */

$logo = rand(0, count ($logos) - 1);



/* Create image from predefined variables */

$im = ImageCreateFromJPEG($logos[$logo]);



/* Output image as a progressive JPEG */

imageinterlace($im,1);



/* Output image with 100% quality */

Imagejpeg($im,'', 100);



/* Destroy picture on the server */

imagedestroy($im);



?>

As always... Script is working but there's some problems with it : generated pictures are not in the same quality as input pictures.

forget it... I'm using other script

X vBulletin 3.8.12 by vBS Debug Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (4)bbcode_code_printable (1)bbcode_quote_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)pagenav (1)pagenav_curpage (1)pagenav_pagelink (1)post_thanks_navbar_search (1)printthread (10)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start pagenav_page pagenav_complete bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages:

Phrase Groups Available:

X vBulletin 3.8.12 by vBS Debug Information
Page Generation 0.01042 seconds Memory Usage 1,746KB Queries Executed 10 (?)
More Information
Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (4)bbcode_code_printable (1)bbcode_quote_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)pagenav (1)pagenav_curpage (1)pagenav_pagelink (1)post_thanks_navbar_search (1)printthread (10)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start pagenav_page pagenav_complete bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
Messages: