php

download the source from http://www.php.net/downloads.php

first install apache2, curl, gd, libjpeg, libpng, ~~libxml2~~, libmcrypt, mysql (or mysqli), postgresql, zlib
if you will be installing xdebug, do NOT use the –disable-cli switch (has since been removed from below)
my most recent build-from-scratch project for php found that libxml2 is not required to be built and installed since Leopard includes it already, so php doesn't error out as shown below; this was built with Mac OS X 10.5.5
On Lion, it looks like everything installs fine except the cli for php. It installed a file named php.dSYM in /usr/local/bin. This file seems to be the actual php executable, so fo r now I just created a symbolic link named php beside the php.dSYM file.
- see https://bugs.php.net/bug.php?id=43341

./configure \
	--prefix=/usr/local \
	--mandir=/usr/local/man \
	--infodir=/usr/local/info \
	--with-apxs2=/usr/local/apache2/bin/apxs \
	--with-curl=/usr/local \
	--enable-exif \
	--enable-ftp \
	--with-gd=/usr/local \
	--with-jpeg-dir=/usr/local \
	--with-png-dir=/usr/local \
	--with-zlib-dir=/usr/local \
	--with-freetype-dir=/usr/local \
	--with-mcrypt=/usr/local \
	--with-mysql=/usr/local/mysql \
	--with-mysqli=/usr/local/mysql/bin/mysql_config \
	--with-pdo-mysql=/usr/local/mysql \
	--with-libxml-dir=/usr/local \
	--enable-zip \
	--with-pgsql=/usr/local/pgsql \
	--with-pdo-pgsql=/usr/local/pgsql \
	--enable-mbstring

make

sudo make install

:!:I had problems installing on Leopard with ld (when linking). The problem seems to be with libxml2. I installed my own libxml2, but Leopard has it's own. It seems like my headers were read, but it tried to link against Apple's older libraries. To fix it, do the following:

attempt your build as before

when you get to the point where the build process breaks (the very end, during linking with ld), copy the last gcc command (Warning: it is HUGE)

gcc -bundle -bundle_loader /usr/local/apache2/bin/httpd -L/usr/lib -L/usr/lib -laprutil-1 -lsqlite3 -lexpat -liconv -L/usr/lib -lapr-1 -lpthread -I/usr/include -g -O2   -L/usr/local/lib -L/usr/local/mysql/lib/mysql
...
-lz -lmysqlclient -lmcrypt -lltdl -liconv -lgd -lfreetype -lpng -lz -ljpeg -lcurl -lz -lm -lxml2 -lz -liconv -lm -lcurl -lssl -lcrypto -lldap -lz -lxml2 -lz -liconv -lm -lmysqlclient -lz -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm -lxml2 -lz -liconv -lm  -o libs/libphp5.bundle && cp libs/libphp5.bundle libs/libphp5.so

paste this into TextWrangler, and remove all references in the beginning of -L/usr/lib
copy and paste this command back to the terminal, press enter, and your module should properly link
type make again to confirm the build process is complete
run sudo make install as usual

first install apache2

./configure --prefix=/usr/local --mandir=/usr/local/man --infodir=/usr/local/info --with-apxs2=/usr/local/apache2/bin/apxs --disable-cli

make

sudo make install

post install configuration

The apache configuration files should automatically be modified. If not, make sure you have the following in httpd.conf:

# this line should already have been added by the php install process
LoadModule php5_module        modules/libphp5.so

# instead of this, add the lines in the following step to mime.types
# AddHandler php5-script php

Instead of the AddHandler line, add these lines to mime.types:

application/x-httpd-php			php phtml
application/x-httpd-php-source		phps

If you want to control custom settings for php, create or edit php.ini in /usr/local/lib. If it doesn't exist, go into your php build directory and run this:

sudo cp php.ini-development /usr/local/lib/php.ini

enable debugging and error handling features

display errors by default
```
display_errors=1
```
show all errors, notices, and warnings
```
error_reporting=E_ALL
```

log all php errors to a file

error_log=/usr/local/apache2/logs/phperror.log
log_errors=1

see also xdebug

Installing PDFLib

download PDFLib for Mac OSX from http://www.pdflib.com (at the time of this writing, the correct file name was PDFlib-7.0.3p5-MacOSX-10.5-Universal-php.dmg)
open the disk image
read up on the documentation (the doc folder)
navigate to bind/php5/php-520 (read the install instructions, or continue with these steps if you are installing this exact version)
create directory /usr/local/lib/php/extensions
create directory /usr/local/lib/php/extensions/no-debug-non-zts-20060613
copy the libpdf_php.so file to /usr/local/lib/php/extensions/no-debug-non-zts-20060613
add the following to php.ini
```
extension=libpdf_php.so
```
start or restart apache, and check a phpinfo page to verify that the module has loaded