|  problema para acceder a una base de datos  
  Buenas, intento  usar apache2.0.53+php5.0.4+firebird1.5servermanagerhe php.ini y httpd.conf dejandolos así
 [PHP]
 
 ;;;;;;;;;;;
 ; WARNING ;
 ;;;;;;;;;;;
 ; This is the default settings file for new PHP installations.
 ; By default, PHP installs itself with a configuration suitable for
 ; development purposes, and *NOT* for production purposes.
 ; For several security-oriented considerations that should be taken
 ; before going online with your site, please consult php.ini-recommended
 ; and http://php.net/manual/en/security.php.
 
 
 ;;;;;;;;;;;;;;;;;;;
 ; About php.ini   ;
 ;;;;;;;;;;;;;;;;;;;
 ; This file controls many aspects of PHP's behavior.  In order for PHP to
 ; read it, it must be named 'php.ini'.  PHP looks for it in the current
 ; working directory, in the path designated by the environment variable
 ; PHPRC, and in the path that was defined in compile time (in that order).
 ; Under Windows, the compile-time path is the Windows directory.  The
 ; path in which the php.ini file is looked for can be overridden using
 ; the -c argument in command line mode.
 ;
 ; The syntax of the file is extremely simple.  Whitespace and Lines
 ; beginning with a semicolon are silently ignored (as you probably guessed).
 ; Section headers (e.g. [Foo]) are also silently ignored, even though
 ; they might mean something in the future.
 ;
 ; Directives are specified using the following syntax:
 ; directive = value
 ; Directive names are *case sensitive* - foo=bar is different from FOO=bar.
 ;
 ; The value can be a string, a number, a PHP constant (e.g. E_ALL or M_PI), one
 ; of the INI constants (On, Off, True, False, Yes, No and None) or an expression
 ; (e.g. E_ALL & ~E_NOTICE), or a quoted string ("foo").
 ;
 ; Expressions in the INI file are limited to bitwise operators and parentheses:
 ; |        bitwise OR
 ; &        bitwise AND
 ; ~        bitwise NOT
 ; !        boolean NOT
 ;
 ; Boolean flags can be turned on using the values 1, On, True or Yes.
 ; They can be turned off using the values 0, Off, False or No.
 ;
 ; An empty string can be denoted by simply not writing anything after the equal
 ; sign, or by using the None keyword:
 ;
 ;  foo =         ; sets foo to an empty string
 ;  foo = none    ; sets foo to an empty string
 ;  foo = "none"  ; sets foo to the string 'none'
 ;
 ; If you use constants in your value, and these constants belong to a
 ; dynamically loaded extension (either a PHP extension or a Zend extension),
 ; you may only use these constants *after* the line that loads the extension.
 ;
 ;
 ;;;;;;;;;;;;;;;;;;;
 ; About this file ;
 ;;;;;;;;;;;;;;;;;;;
 ; All the values in the php.ini-dist file correspond to the builtin
 ; defaults (that is, if no php.ini is used, or if you delete these lines,
 ; the builtin defaults will be identical).
 
 
 ;;;;;;;;;;;;;;;;;;;;
 ; Language Options ;
 ;;;;;;;;;;;;;;;;;;;;
 
 ; Enable the PHP scripting language engine under Apache.
 engine = On
 
 ; Enable compatibility mode with Zend Engine 1 (PHP 4.x)
 zend.ze1_compatibility_mode = Off
 
 ; Allow the <? tag.  Otherwise, only <?php and <script> tags are recognized.
 ; NOTE: Using short tags should be avoided when developing applications or
 ; libraries that are meant for redistribution, or deployment on PHP
 ; servers which are not under your control, because short tags may not
 ; be supported on the target server. For portable, redistributable code,
 ; be sure not to use short tags.
 short_open_tag = On
 
 ; Allow ASP-style <% %> tags.
 asp_tags = Off
 
 ; The number of significant digits displayed in floating point numbers.
 precision    =  12
 
 ; Enforce year 2000 compliance (will cause problems with non-compliant browsers)
 y2k_compliance = On
 
 ; Output buffering allows you to send header lines (including cookies) even
 ; after you send body content, at the price of slowing PHP's output layer a
 ; bit.  You can enable output buffering during runtime by calling the output
 ; buffering functions.  You can also enable output buffering for all files by
 ; setting this directive to On.  If you wish to limit the size of the buffer
 ; to a certain size - you can use a maximum number of bytes instead of 'On', as
 ; a value for this directive (e.g., output_buffering=4096).
 output_buffering = Off
 
 ; You can redirect all of the output of your scripts to a function.  For
 ; example, if you set output_handler to "mb_output_handler", character
 ; encoding will be transparently converted to the specified encoding.
 ; Setting any output handler automatically turns on output buffering.
 ; Note: People who wrote portable scripts should not depend on this ini
 ;       directive. Instead, explicitly set the output handler using ob_start().
 ;       Using this ini directive may cause problems unless you know what script
 ;       is doing.
 ; Note: You cannot use both "mb_output_handler" with "ob_iconv_handler"
 ;       and you cannot use both "ob_gzhandler" and "zlib.output_compression".
 ; Note: output_handler must be empty if this is set 'On' !!!!
 ;       Instead you must use zlib.output_handler.
 ;output_handler =
 
 ; Transparent output compression using the zlib library
 ; Valid values for this option are 'off', 'on', or a specific buffer size
 ; to be used for compression (default is 4KB)
 ; Note: Resulting chunk size may vary due to nature of compression. PHP
 ;       outputs chunks that are few hundreds bytes each as a result of
 ;       compression. If you prefer a larger chunk size for better
 ;       performance, enable output_buffering in addition.
 ; Note: You need to use zlib.output_handler instead of the standard
 ;       output_handler, or otherwise the output will be corrupted.
 zlib.output_compression = Off
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