Just for fun here is how you might output a 1x1 GIF if you don't want to be bothered with an external file. The big block of gibberish after the __DATA__ is the uuencoded image data so you should be careful not to mangle it, note the single quote on a line by itself at the end particularly: 

#!/usr/bin/perl -w
 
use strict;
use CGI qw(:standard);
 
my $image = unpack "u*",do { local $/; <DATA>};
 
print header(-type => 'image/gif');
print $image;
__DATA__
M1TE&.#=A`0`!`.<```````$!`0("`@,#`P0$!`4%!08&!@<'!P@("`D)"0H*
M"@L+"PP,#`T-#0X.#@\/#Q`0$!$1$1(2$A,3$Q04%!45%186%A<7%Q@8&!D9
M&1H:&AL;&QP<'!T='1X>'A\?'R`@("$A(2(B(B,C(R0D)"4E)28F)B<G)R@H
M*"DI*2HJ*BLK*RPL+"TM+2XN+B\O+S`P,#$Q,3(R,C,S,S0T-#4U-38V-C<W
M-S@X.#DY.3HZ.CL[.SP\/#T]/3X^/C\_/T!`0$%!04)"0D-#0T1$1$5%149&
M1D='1TA(2$E)24I*2DM+2TQ,3$U-34Y.3D]/3U!04%%145)24E-34U145%55
M55965E=75UA86%E965I:6EM;6UQ<7%U=75Y>7E]?7V!@8&%A86)B8F-C8V1D
M9&5E969F9F=G9VAH:&EI:6IJ:FMK:VQL;&UM;6YN;F]O;W!P<'%Q<7)R<G-S
M<W1T='5U=79V=G=W=WAX>'EY>7IZ>GM[>WQ\?'U]?7Y^?G]_?X"`@(&!@8*"
M@H.#@X2$A(6%A8:&AH>'AXB(B(F)B8J*BHN+BXR,C(V-C8Z.CH^/CY"0D)&1
MD9*2DI.3DY24E)65E9:6EI>7EYB8F)F9F9J:FIN;FYR<G)V=G9Z>GI^?GZ"@
MH*&AH:*BHJ.CHZ2DI*6EI::FIJ>GIZBHJ*FIJ:JJJJNKJZRLK*VMK:ZNKJ^O
MK["PL+&QL;*RLK.SL[2TM+6UM;:VMK>WM[BXN+FYN;JZNKN[N[R\O+V]O;Z^
MOK^_O\#`P,'!P<+"PL/#P\3$Q,7%Q<;&QL?'Q\C(R,G)R<K*RLO+R\S,S,W-
MS<[.SL_/S]#0T-'1T=+2TM/3T]34U-75U=;6UM?7U]C8V-G9V=K:VMO;V]S<
MW-W=W=[>WM_?W^#@X.'AX>+BXN/CX^3DY.7EY>;FYN?GY^CHZ.GIZ>KJZNOK
MZ^SL[.WM[>[N[N_O[_#P\/'Q\?+R\O/S\_3T]/7U]?;V]O?W]_CX^/GY^?KZ
B^OO[^_S\_/W]_?[^_O___RP``````0`!```(!`#_!00`.P``
`

[download]

/J\

In reply to Re: Using perl in <img src=> scenarios by gellyfish
in thread Using perl in <img src=> scenarios by Feltros

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