Between PHP 4.0.6 and 4.1.0, the Zend module struct changed in a way that broke both source and binary compatibility. If you are maintaining a third party extension, here's how to update it:

If this was your old module entry:

zend_module_entry foo_module_entry = { "foo", / extension name / foo_functions, / extension function list / NULL, / extension-wide startup function / NULL, / extension-wide shutdown function / PHP_RINIT(foo), / per-request startup function / PHP_RSHUTDOWN(foo), / per-request shutdown function / PHP_MINFO(foo), / information function / STANDARD_MODULE_PROPERTIES };

Here's how it should look if you want your code to build with PHP 4.1.0 and up:

zend_module_entry foo_module_entry = {

if ZEND_MODULE_API_NO >= 20010901

STANDARD_MODULE_HEADER,

endif

"foo",                /* extension name */
foo_functions,        /* extension function list */
NULL,                 /* extension-wide startup function */
NULL,                 /* extension-wide shutdown function */
PHP_RINIT(foo),       /* per-request startup function */
PHP_RSHUTDOWN(foo),   /* per-request shutdown function */
PHP_MINFO(foo),       /* information function */

if ZEND_MODULE_API_NO >= 20010901

FOO_VERSION,          /* extension version number (string) */

endif

STANDARD_MODULE_PROPERTIES

};

If you don't care about source compatibility with earlier PHP releases than 4.1.0, you can drop the #if/#endif lines.