Introduction + Using another extension's resources

Hello everyone, My name is Raj, and I'm a college student pursuing a Bachelor's Degree in Software Engineering, with programming experience in PHP, Java, and to an extent C/C++. I began learning how to build a PHP extension about a week ago, and am in the midst of building my first PHP extension. I've encountered numerous problems, most of which I've managed to resolve with the relevant tutorials online. There is one problem though that I'm unable to resolve. I'm attempting to use another extension's resources, the PHP MySQL extension to be exact. The following is my code: ZEND_FUNCTION(test_func) { int argc = ZEND_NUM_ARGS(); if (1 != argc) WRONG_PARAM_COUNT; zval *mysql_res = NULL; php_mysql_conn *mysql = NULL; int res_type = -1; if (FAILURE == zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET, argc TSRMLS_CC, "r", &mysql_res)) RETURN_NULL(); mysql = (php_mysql_conn *) zend_list_find(Z_RESVAL_P(mybs_res), &res_type); mysql_close(&mysql->conn); } Now, everything works fine until I pass mysql->conn to mysql_close. At this point, I get a seg fault whenever I try to call the above function in my PHP script. The argument I pass to this function is the resource returned by calling the php mysql_connect() function. If I get a MySQL reference via mysql_real_connect() and pass it to mysql_close() directly within the test_func definition, everything works fine. I've considered using ZEND_FETCH_RESOURCE and ZEND_FETCH_RESOURCE2, but both of them require link descriptors for the MySQL resource, which I don't have access to. I've also checked the forums, and there was a mention of how to access another extension's resources, either statically or by using the ZEND_MOD_REQUIRED macro. I'm not to keen on static linking, and I'm not entirely sure on what to do exactly after specifying ZEND_MOD_REQUIRED("mysql") as a dependency (I checked the pdo_sqlite extension source, not much help from there). Some light on this issue would be great :) Thanks in advance. Regards, Raj -- View this message in context: http://www.nabble.com/Introduction-%2B-Using-another-extension%27s-resources-tp21514767p21514767.html Sent from the Pecl - Dev mailing list archive at Nabble.com.