I use the GD extension to generate .png images automatically for displaying text with a specific Type1 font, using the imagepstext function.

PHP 4.2.x generates these images perfectly, while using PHP 4.3.0-pre1 and -pre2 results in some really weird output.

Here are some examples to show the difference:
http://web.axelero.hu/fdsoft/temp/images.html

There actually seems to be two seperate problems:
- the characters are not lined up properly any more
- anti-aliasing produces weird output (most pronounced when the resulting image is viewed in IE 6, less ugly but still noticeable in Mozilla)

The anti-aliasing problem pretty much goes away if I recompile PHP 4.3.0-pre2 to use my old GD 1.8.4 (from the Red Hat rpms) instead of PHP's built-in version of GD.

The php code in question:

<code>
$fonthandle=@imagepsloadfont(FONT_PATH.$font);
imagepsencodefont($fonthandle, FONT_PATH.'IsoLatin1.enc');

$im = imagecreate($imgwidth, $imgheight);
$background_color = imagecolorallocate ($im, $background[0], $background[1], $background[2]);
imagecolortransparent($im, $background_color);
$text_color = imagecolorallocate ($im, 
	$color[0], $color[1], $color[2]);
imagepstext($im, $txt, $fonthandle, $size, $text_color, $background_color,$x, $y, 0, 0, 0, 16);
imagepng($im);
</code>



Finally my php configure options:

<code>
--host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --prefix=/usr --with-config-file-path=/etc --with-exec-dir=/usr/bin --enable-force-cgi-redirect --disable-debug --enable-dbg=shared --with-dbg-profiler --enable-pic --disable-rpath --enable-inline-optimization --with-bz2 --with-db3 --with-curl=/usr/local --with-freetype-dir=/usr --with-png-dir=/usr --with-gd=shared --enable-gd-native-ttf --with-ttf --with-t1lib
--with-gettext=shared --with-ncurses --with-iconv=shared --with-jpeg-dir=/usr --with-openssl --with-png --with-regex=system --with-expat-dir=/usr --with-zlib --with-layout=GNU --enable-bcmath --enable-exif --enable-ftp
--enable-sockets --enable-sysvsem --enable-sysvshm --enable-discard-path --enable-track-vars --enable-trans-sid
--enable-wddx --enable-exif --enable-memory-limit --enable-bcmath --enable-shmop --enable-versioning --enable-calendar --enable-dbx --enable-dio --enable-mcal --with-readline  --with-mysql=shared,/usr --with-sybase-ct=shared,/usr/local --with-pgsql=shared --with-unixODBC=shared --with-interbase=shared,/opt/interbase
--with-imap=shared --with-imap-ssl --with-kerberos=/usr/kerberos --with-zip=shared --with-pspell=shared --with-ming=shared --with-pdflib=shared --with-pear=/usr/share/pear --with-apxs=/usr/sbin/apxs
</code>

The '--with-gd=shared' option was changed to '--with-gd=shared,/usr' to produce the "without built-in GD" output.