I've moved most of the code out of the ext/standard directory and into the
sapi/apache directory.  In order to do that I had to make a few of the local
functions in basic_functions.c non-local.  See patch for details.  The patch
is a complete patch of all my changes and can be applied to a fresh checkout
of PHP_4_3.

I still need someone to tell me how to #ifdef based on the presence of
the --with-apxs configure flag.  Also will I need to make modifications to
the other SAPI modules because of the changes to SAPI.c and SAPI.h?  There
are a few more changes to be made so that the connection is guaranteed to be
closed down cleanly.

Joseph
? ext/mysql/.libs
Index: ext/standard/basic_functions.c
===================================================================
RCS file: /repository/php4/ext/standard/basic_functions.c,v
retrieving revision 1.543.2.4
diff -u -b -r1.543.2.4 basic_functions.c
--- ext/standard/basic_functions.c      20 Dec 2002 16:37:44 -0000      1.543.2.4
+++ ext/standard/basic_functions.c      27 Dec 2002 22:17:15 -0000
@@ -107,11 +107,6 @@
 {3, BYREF_FORCE, BYREF_FORCE, BYREF_FORCE};
 
 
-typedef struct _php_shutdown_function_entry {
-       zval **arguments;
-       int arg_count;
-} php_shutdown_function_entry;
-
 typedef struct _user_tick_function_entry {
        zval **arguments;
        int arg_count;
@@ -119,7 +114,6 @@
 } user_tick_function_entry;
 
 /* some prototypes for local functions */
-static void user_shutdown_function_dtor(php_shutdown_function_entry 
*shutdown_function_entry);
 static void user_tick_function_dtor(user_tick_function_entry *tick_function_entry);
 
 /* Demo code. Enable only if you need this. */
@@ -1121,6 +1115,7 @@
        }
 #endif
        BG(user_shutdown_function_names) = NULL;
+       BG(user_apache_shutdown_function_names) = NULL;
 
 #if HAVE_CRYPT
        PHP_RINIT(crypt) (INIT_FUNC_ARGS_PASSTHRU);
@@ -1986,7 +1981,7 @@
 /* }}} */
 
 
-void user_shutdown_function_dtor(php_shutdown_function_entry *shutdown_function_entry)
+PHPAPI void user_shutdown_function_dtor(php_shutdown_function_entry 
+*shutdown_function_entry)
 {
        int i;
 
@@ -2006,7 +2001,7 @@
        efree(tick_function_entry->arguments);
 }
 
-static int user_shutdown_function_call(php_shutdown_function_entry 
*shutdown_function_entry TSRMLS_DC)
+PHPAPI int user_shutdown_function_call(php_shutdown_function_entry 
+*shutdown_function_entry TSRMLS_DC)
 {
        zval retval;
 
@@ -2128,7 +2123,6 @@
        zend_hash_next_index_insert(BG(user_shutdown_function_names), 
&shutdown_function_entry, sizeof(php_shutdown_function_entry), NULL);
 }
 /* }}} */
-
 
 ZEND_API void php_get_highlight_struct(zend_syntax_highlighter_ini 
*syntax_highlighter_ini)
 {
Index: ext/standard/basic_functions.h
===================================================================
RCS file: /repository/php4/ext/standard/basic_functions.h,v
retrieving revision 1.109
diff -u -b -r1.109 basic_functions.h
--- ext/standard/basic_functions.h      5 Nov 2002 06:05:48 -0000       1.109
+++ ext/standard/basic_functions.h      27 Dec 2002 22:17:15 -0000
@@ -74,6 +74,14 @@
 PHP_FUNCTION(highlight_string);
 ZEND_API void php_get_highlight_struct(zend_syntax_highlighter_ini 
*syntax_highlighter_ini);
 
+typedef struct _php_shutdown_function_entry {
+       zval **arguments;
+       int arg_count;
+} php_shutdown_function_entry;
+
+PHPAPI void user_shutdown_function_dtor(php_shutdown_function_entry 
+*shutdown_function_entry);
+PHPAPI int user_shutdown_function_call(php_shutdown_function_entry 
+*shutdown_function_entry TSRMLS_DC);
+
 PHP_FUNCTION(ini_get);
 PHP_FUNCTION(ini_get_all);
 PHP_FUNCTION(ini_set);
@@ -130,6 +138,7 @@
 
 typedef struct {
        HashTable *user_shutdown_function_names;
+       HashTable *user_apache_shutdown_function_names;
        HashTable putenv_ht;
        zval *strtok_zval;
        char *strtok_string;
Index: main/SAPI.c
===================================================================
RCS file: /repository/php4/main/SAPI.c,v
retrieving revision 1.155.2.2
diff -u -b -r1.155.2.2 SAPI.c
--- main/SAPI.c 5 Dec 2002 22:15:00 -0000       1.155.2.2
+++ main/SAPI.c 27 Dec 2002 22:17:15 -0000
@@ -348,6 +348,14 @@
                SG(sapi_headers).http_status_line = NULL;
        }
 }
+
+SAPI_API void sapi_close(TSRMLS_D)
+{
+       if(sapi_module.close) {
+               sapi_module.close(TSRMLS_C);
+       }
+       sapi_flush(TSRMLS_C);
+}
        
 SAPI_API void sapi_deactivate(TSRMLS_D)
 {
Index: main/SAPI.h
===================================================================
RCS file: /repository/php4/main/SAPI.h,v
retrieving revision 1.87
diff -u -b -r1.87 SAPI.h
--- main/SAPI.h 12 Nov 2002 20:56:47 -0000      1.87
+++ main/SAPI.h 27 Dec 2002 22:17:15 -0000
@@ -130,6 +130,7 @@
 
 SAPI_API void sapi_startup(sapi_module_struct *sf);
 SAPI_API void sapi_shutdown(void);
+SAPI_API void sapi_close(TSRMLS_D);
 SAPI_API void sapi_activate(TSRMLS_D);
 SAPI_API void sapi_deactivate(TSRMLS_D);
 SAPI_API void sapi_initialize_empty_request(TSRMLS_D);
@@ -190,6 +191,7 @@
        int (*startup)(struct _sapi_module_struct *sapi_module);
        int (*shutdown)(struct _sapi_module_struct *sapi_module);
 
+       int (*close)(TSRMLS_D);
        int (*activate)(TSRMLS_D);
        int (*deactivate)(TSRMLS_D);
 
Index: main/main.c
===================================================================
RCS file: /repository/php4/main/main.c,v
retrieving revision 1.512.2.5
diff -u -b -r1.512.2.5 main.c
--- main/main.c 16 Dec 2002 15:44:06 -0000      1.512.2.5
+++ main/main.c 27 Dec 2002 22:17:15 -0000
@@ -923,6 +923,11 @@
        if (PG(modules_activated)) zend_try {
                php_call_shutdown_functions();
        } zend_end_try();
+
+       /*Close the connection before we cleanup*/
+       zend_try {
+               sapi_close(TSRMLS_C);
+       } zend_end_try();
        
        if (PG(modules_activated)) {
                zend_deactivate_modules(TSRMLS_C);
Index: sapi/apache/mod_php4.c
===================================================================
RCS file: /repository/php4/sapi/apache/mod_php4.c,v
retrieving revision 1.146.2.1
diff -u -b -r1.146.2.1 mod_php4.c
--- sapi/apache/mod_php4.c      21 Dec 2002 20:09:09 -0000      1.146.2.1
+++ sapi/apache/mod_php4.c      27 Dec 2002 22:17:15 -0000
@@ -300,6 +300,38 @@
 }
 /* }}} */
 
+/* {{{ php_apache_sapi_close
+ */
+static int php_apache_sapi_close(TSRMLS_D)
+{
+       int rt;
+       request_rec *r = (request_rec *) SG(server_context);
+
+#if MODULE_MAGIC_NUMBER > 19970110
+       rt = rflush(r);
+#else
+       rt = bflush(r->connection->client);
+#endif
+       if( rt = -1){
+               ap_bclose(r->connection->client);
+               /* run the shutdown functions */
+               php_call_apache_shutdown_functions();
+               return SUCCESS;
+       }
+       ap_bsetflag(r->connection->client, B_EOUT, 1);
+       
+       if (r->connection->aborted) {
+               ap_bclose(r->connection->client);
+               /* run the shutdown functions */
+               php_call_apache_shutdown_functions();
+               return SUCCESS;
+       }
+       /* run the shutdown functions anyway */
+       php_call_apache_shutdown_functions();
+       return FAILURE;
+}
+/* }}} */
+
 /* {{{ php_apache_sapi_activate
  */
 static int php_apache_sapi_activate(TSRMLS_D)
@@ -351,6 +383,8 @@
                                                                        
        php_apache_startup,                             /* startup */
        php_module_shutdown_wrapper,    /* shutdown */
+
+       php_apache_sapi_close,                  /* close */
 
        php_apache_sapi_activate,               /* activate */
        NULL,                                                   /* deactivate */
Index: sapi/apache/mod_php4.h
===================================================================
RCS file: /repository/php4/sapi/apache/mod_php4.h,v
retrieving revision 1.17
diff -u -b -r1.17 mod_php4.h
--- sapi/apache/mod_php4.h      28 Feb 2002 08:27:19 -0000      1.17
+++ sapi/apache/mod_php4.h      27 Dec 2002 22:17:15 -0000
@@ -35,6 +35,7 @@
 } php_apache_info_struct;
 
 extern zend_module_entry apache_module_entry;
+extern void php_call_apache_shutdown_functions(void);
 
 #ifdef ZTS
 extern int php_apache_info_id;
Index: sapi/apache/php_apache.c
===================================================================
RCS file: /repository/php4/sapi/apache/php_apache.c,v
retrieving revision 1.69.2.1
diff -u -b -r1.69.2.1 php_apache.c
--- sapi/apache/php_apache.c    5 Dec 2002 23:19:02 -0000       1.69.2.1
+++ sapi/apache/php_apache.c    27 Dec 2002 22:17:15 -0000
@@ -44,6 +44,7 @@
 PHP_FUNCTION(apache_lookup_uri);
 PHP_FUNCTION(apache_child_terminate);
 PHP_FUNCTION(apache_setenv);
+PHP_FUNCTION(apache_register_shutdown_function);
 
 PHP_MINFO_FUNCTION(apache);
 
@@ -55,6 +56,7 @@
        PHP_FE(apache_child_terminate,                                  NULL)
        PHP_FE(apache_setenv,                                                   NULL)
        PHP_FE(apache_response_headers,                                 NULL)
+       PHP_FE(apache_register_shutdown_function,               NULL)
        PHP_FALIAS(getallheaders, apache_request_headers, NULL)
        {NULL, NULL, NULL}
 };
@@ -115,7 +117,7 @@
                ap_child_terminate( ((request_rec *)SG(server_context)) );
                RETURN_TRUE;
        } else { /* tell them to get lost! */
-               php_error_docref(NULL TSRMLS_CC, E_WARNING, "apache.child_terminate is 
disabled");
+               php_error_docref(NULL TSRMLS_CC, E_WARNING, "apache_child_terminate is 
+disabled");
                RETURN_FALSE;
        }
 #else
@@ -471,6 +473,59 @@
        }
 
        destroy_sub_req(rr);
+}
+/* }}} */
+
+
+/* This function is called after the connection has closed so that the registered
+ * functions can be executed.
+ */
+void php_call_apache_shutdown_functions(void)
+{
+       TSRMLS_FETCH();
+
+       if (BG(user_apache_shutdown_function_names))
+               zend_try {
+                       zend_hash_apply(BG(user_apache_shutdown_function_names), 
+(apply_func_t) user_shutdown_function_call TSRMLS_CC);
+                       memcpy(&EG(bailout), &orig_bailout, sizeof(jmp_buf));
+                       zend_hash_destroy(BG(user_apache_shutdown_function_names));
+                       efree(BG(user_apache_shutdown_function_names));
+               }
+               zend_end_try();
+}
+
+/* {{{ proto void register_apache_shutdown_function(string function_name)
+ * Register a user-level function to be called on request termination: executed after 
+the
+ * connection has closed.  This function is only available on Apache web servers 
+using the
+ * SAPI module as it uses Apache API calls to close the connection before continued 
+ * execution.  NOTE: Do not use "print()" or "echo()" calls within your registered 
+ * functions as this will cause execution to fail.
+ */
+PHP_FUNCTION(apache_register_shutdown_function)
+{
+       php_shutdown_function_entry shutdown_function_entry;
+       int i;
+
+       shutdown_function_entry.arg_count = ZEND_NUM_ARGS();
+
+       if (shutdown_function_entry.arg_count < 1) {
+               WRONG_PARAM_COUNT;
+       }
+
+       shutdown_function_entry.arguments = (pval **) emalloc(sizeof(pval *) 
+*shutdown_function_entry.arg_count);
+
+       if (zend_get_parameters_array(ht, shutdown_function_entry.arg_count, 
+shutdown_function_entry.arguments) == FAILURE) {
+               RETURN_FALSE;
+       }
+       if (!BG(user_apache_shutdown_function_names)) {
+               ALLOC_HASHTABLE(BG(user_apache_shutdown_function_names));
+               zend_hash_init(BG(user_apache_shutdown_function_names), 0, NULL, (void 
+(*)(void *)) user_shutdown_function_dtor, 0);
+       }
+
+       for (i = 0; i < shutdown_function_entry.arg_count; i++) {
+               shutdown_function_entry.arguments[i]->refcount++;
+       }
+       zend_hash_next_index_insert(BG(user_apache_shutdown_function_names), 
+&shutdown_function_entry, sizeof(php_shutdown_function_entry), NULL);
 }
 /* }}} */
 
<?php

function shutdown()
{
        sleep(3);
        print("Shutdown function.\n");
}

function offline()
{
        $i = 0;
        $out = fopen('/tmp/shutdown_test.out',"a+");
        for($i = 0; $i < 6; $i++)
        {
                sleep(3);
                fputs($out, "sleeping\n");
        }
        fclose($out);
}

apache_register_shutdown_function(offline);
register_shutdown_function(shutdown);

echo "This is the end.<br>\n";

?>

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