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POHow to start writing a PHP5 extension in C++
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copied!<p>I'm writing a PHP5 extension, and while I could write it in C, it would be easier to use C++ and take advantage of the STL and Boost.</p> <p>Trouble is, the <a href="http://devzone.zend.com/node/view/id/1021" rel="noreferrer">tutorials</a> I've seen only deal with C, and I'm looking for a basic example which uses C++</p> <p>Here's what I've tried so far:</p> <h3>config.m4</h3> <pre><code>[ --enable-hello Enable Hello World support]) if test "$PHP_HELLO" = "yes"; then AC_DEFINE(HAVE_HELLO, 1, [Whether you have Hello World]) PHP_NEW_EXTENSION(hello, hello.cpp, $ext_shared) fi </code></pre> <h3>php_hello.h</h3> <p>Note my attempt to declare the bits that PHP interfaces with as extern "C"</p> <pre><code>#ifndef PHP_HELLO_H #define PHP_HELLO_H 1 extern "C" { #define PHP_HELLO_WORLD_VERSION "1.0" #define PHP_HELLO_WORLD_EXTNAME "hello" PHP_FUNCTION(hello_world); extern zend_module_entry hello_module_entry; #define phpext_hello_ptr &hello_module_entry } #endif </code></pre> <h3>hello.cpp</h3> <pre><code>#ifdef HAVE_CONFIG_H #include "config.h" #endif #include "php.h" #include "php_hello.h" static function_entry hello_functions[] = { PHP_FE(hello_world, NULL) {NULL, NULL, NULL} }; zend_module_entry hello_module_entry = { #if ZEND_MODULE_API_NO >= 20010901 STANDARD_MODULE_HEADER, #endif PHP_HELLO_WORLD_EXTNAME, hello_functions, NULL, NULL, NULL, NULL, NULL, #if ZEND_MODULE_API_NO >= 20010901 PHP_HELLO_WORLD_VERSION, #endif STANDARD_MODULE_PROPERTIES }; #ifdef COMPILE_DL_HELLO ZEND_GET_MODULE(hello) #endif PHP_FUNCTION(hello_world) { RETURN_STRING("Hello World", 1); } </code></pre> <h3>....and here are my build errors:</h3> <p>If I phpize, configure and make this, I get the following (reformatted for clarity)</p> <pre><code>$ make /bin/bash /home/paul/php5/php-5.2.8/ext/hello2/libtool --mode=compile -I. -I/home/paul/php5/php-5.2.8/ext/hello2 -DPHP_ATOM_INC -I/home/paul/php5/php-5.2.8/ext/hello2/include -I/home/paul/php5/php-5.2.8/ext/hello2/main -I/home/paul/php5/php-5.2.8/ext/hello2 -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -DHAVE_CONFIG_H -c /home/paul/php5/php-5.2.8/ext/hello2/hello.cpp -o hello.lo libtool: compile: unrecognized option `-I.' libtool: compile: Try `libtool --help' for more information. make: *** [hello.lo] Error 1 </code></pre> <p>I suspect I need more work doing to the config.m4 in order to create a working makefile but I'm pretty new to the GCC toolchain.</p> <p>If it helps, I'm only targetting php 5.2.6+, and only on Linux (specifically, Ubuntu 8.04). My build environment is using Ubuntu 8.10, using gcc 4.3.2</p> <p>Pointers gratefully received!</p>

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