SAP Netweaver Remote Function Calls support for PHP

This extension is aimed to provide developers a convenient way to invoke remote-enabled ABAP functions and retrieve their results from PHP code.

A short usage example:

<?php
$connection = new Sap($logonParams);

/** @var array $result */
$result = $connection->call('MY_REMOTE_ENABLED_ABAP_FUNCTION', [
    'I_VAR' => 5
]);

//or using the procedural way...
$connection = sap_connect($logonParams);

/** @var array $result */
$result = sap_invoke_function('MY_REMOTE_ENABLED_ABAP_FUNCTION', $connection, [
    'I_VAR' => 5
]);

For more examples visit the examples/ directory of this repository.

Installation

Download and extract the SAP Netweaver RFC SDK package for your platform architecture (available from SAP Marketplace).

Windows

1. Make sure that .DLL files located in path\to\nwrfcsdk\lib can be discovered by PHP using one of the following methods:

   • Copy all .DLLs to your %SystemDrive%\Windows directory
   • Append path\to\nwrfcsdk\lib to your system's PATH environment variable
   • Copy all .DLLs in the same folder as your php executable

2. Install the appropriate Visual Studio version for your PHP version.

   • For PHP 5.6.x use VS2012 (VC11)
   • For PHP 7.0.x and 7.1.x use VS2015 (VC14)
   • For PHP 7.2.x and 7.3.x use VS2017 (VC15)

   Express or Community versions of Visual Studio are just fine

3. Download and extract the PHP devel package matching your PHP version from here

   Note that you should use the same platform (x86 or x64) and thread safety setting (TS or NTS) with your installed PHP.

4. Clone the appropriate branch of this repository for your PHP version (5.6-dev, 7.0-dev, 7.1-dev, 7.2-dev, 7.3-dev), or download a release.

   git clone https://github.com/jsoumelidis/php_sap.git M.m-dev
   

   replacing M.m with your Major/minor PHP version (e.g 7.1)

5. On a VS20XX xYY command line window cd to the cloned (or downloaded) php_sap directory (XX is the version and YY is the platform, like VS2015 x86), e.g.

   cd C:\php_sap
   

   Note that you should use the same VS Command Line platform with your installed PHP (x86 or x64).

6. Execute Path\To\PHP\Devel\phpize

7. Assuming you have extracted SAP Netweaver RFC SDK to C:\nwrfcsdk and PHP is installed in directory C:\php\7.0-x64-nts run the following command

   configure --enable-sap --with-sap-nwrfcsdk="C:\nwrfcsdk" --with-prefix="C:\php\7.0-x64-nts"
   

8. Run nmake to build the extension

9. Test the extension using nmake test and verify output

   Testing against a SAP R/3 backend requires valid configuration. Edit the config.inc file located under tests directory of this repository and provide your system values. If you wish to use a sapnwrfc.ini file instead, place it in the root directory of the repository and use only the dest key in config.inc. For details on what system values to provide and/or how to create a sapnwrfc.ini file, check the demo .ini under /path/to/nwrfcsdk/demo directory.

10. Use nmake install to copy the extension's dll file to your PHP installation's ext directory.

11. Edit your php.ini file to enable the extension adding extension=php_sap.dll (or just extension=sap for php7.2)

12. Verify extension is installed and loaded using

    C:\php\7.0-x64-nts\php -m
    

    You should be able to find the sap line in the output.

Linux

1. Extract SAP Netweaver RFC SDK. This guide assumes the extraction path is /usr/sap/nwrfcsdk, but you can place the extracted nwrfcsdk folder wherever fits you best.

   Note that the RFC libraries located in /path/to/nwrfcsdk/lib must be cached by ldconfig. One way to do that is to create a nwrfcsdk.conf file in /etc/ld.so.conf.d/ directory that contain the path to the libraries and then refresh the cache by executing sudo ldconfig

2. Install PHP devel package matching your PHP version
3. Clone the appropriate branch of this repository for your PHP version (5.6-dev, 7.0-dev, 7.1-dev, 7.2-dev, 7.3-dev), or download a packaged release.

   git clone https://github.com/jsoumelidis/php_sap.git M.m-dev
   

   replacing M.m with your Major/minor PHP version (e.g 7.1)
4. cd to the cloned (or downloaded) php_sap directory:

   cd /home/john/php_sap
   

5. Execute phpize
6. Run:

   ./configure --enable-sap --with-sap-nwrfcsdk=/usr/sap/nwrfcsdk
   

7. Build the extension using make
8. Test with make test and verify output

   Testing against a SAP R/3 backend requires valid configuration. Edit the config.inc file located under tests directory of this repository and provide your system values. If you wish to use a sapnwrfc.ini file instead, place it in the root directory of the repository and use only the dest key in config.inc. For details on what system values to provide and/or how to create a sapnwrfc.ini file, check the demo .ini under /path/to/nwrfcsdk/demo directory.

9. Install the extension using sudo make install
10. Create a sap.ini file in your /etc/php.d directory with the following content:

    extension=sap.so
    

11. Verify extension is installed and loaded using php -m. Locate sap in the output

Usage

Code examples demonstrating the usage of the extension is located under the examples subdirectory of this repository. For a full documentation of the classes exposed take a look in classes/ subdirectory of this repository.

Configuration

php_sap extension exposes the following php.ini configuration:

sap.sanwrfc_ini_dir: string Default: empty

The directory (absolute or relative to current) to look for a sapnwrfc.ini file. If empty, the current directory is used.

sap.trace_dir: string Default: empty

The directory (absolute or relative to current) to place RFC trace files. If empty, the current directory is used.

sap.trace_level: integer Default: 0

RFC trace level for all destinations that do not explicitly define their own trace level. Possible values are 0(off), 1(brief), 2(verbose), 3(full),

sap.rtrim_export_strings: boolean Default: Off

Data containing characters (strings) are always transferred from the backend using the full length of their container (as defined in SE37). For example, a parameter of type CHAR(20) containing the word "Hello" will be transfered and exported as "Hello               ". This setting enables/disables automatic right-trimming for those cases.

This behavior can be overridden explicitly on every function invocation (see documentation).

IDEs

In order to provide autocomplete and documentation support for IDEs, you can require jsoumelidis/ext-sap in your project's composer.json development dependencies

composer require --dev jsoumelidis/ext-sap M.m.*

Replace M.m with your Major/minor php version (e.g. 7.1.* or 5.6.*)