<?php
echo say();
?>

$ php ./test.php
$ hello word

$ cd php_src/ext/
$ ./ext_skel --extname=say

$ cd ./say
$ vim ./config.m4

dnl If your extension references something external, use with:
dnl PHP_ARG_WITH(say, for say support,
dnl Make sure that the comment is aligned:
dnl [ --with-say       Include say support])
dnl Otherwise use enable:
dnl PHP_ARG_ENABLE(say, whether to enable say support,
dnl Make sure that the comment is aligned:
dnl [ --enable-say      Enable say support])

dnl If your extension references something external, use with:
 dnl PHP_ARG_WITH(say, for say support,
 dnl Make sure that the comment is aligned:
 dnl [ --with-say       Include say support])
 dnl Otherwise use enable:
 PHP_ARG_ENABLE(say, whether to enable say support,
 Make sure that the comment is aligned:
 [ --enable-say      Enable say support])

PHP_FUNCTION(say)
{
    zend_string *strg;
    strg = strpprintf(0, "hello word");
    RETURN_STR(strg);
}

PHP_FE(say, NULL)

const zend_function_entry say_functions[] = {
   PHP_FE(say, NULL)    /* For testing, remove later. */
   PHP_FE(confirm_say_compiled,  NULL)    /* For testing, remove later. */
   PHP_FE_END /* Must be the last line in say_functions[] */
 };
 /* }}} */

$ phpize
$ ./configure
$ make && make install

[say]
extension = say.so