Added retrieval of specific instance form Array

Added the possibility to retrieve a specific Redis instance from the
array. For instance:
$r = $ra->_specified($ra->_target($key));

Author: Emmanuel Merali

redis_array.c

@@ -45,6 +45,7 @@ zend_function_entry redis_array_functions[] = {
 
      PHP_ME(RedisArray, _hosts, NULL, ZEND_ACC_PUBLIC)
      PHP_ME(RedisArray, _target, NULL, ZEND_ACC_PUBLIC)
+     PHP_ME(RedisArray, _specified, NULL, ZEND_ACC_PUBLIC)
      PHP_ME(RedisArray, _function, NULL, ZEND_ACC_PUBLIC)
      PHP_ME(RedisArray, _distributor, NULL, ZEND_ACC_PUBLIC)
      PHP_ME(RedisArray, _rehash, NULL, ZEND_ACC_PUBLIC)
@@ -419,6 +420,31 @@ PHP_METHOD(RedisArray, _target)
 	}
 }
 
+PHP_METHOD(RedisArray, _specified)
+{
+	zval *object;
+	RedisArray *ra;
+	char *target;
+	int target_len;
+	zval *z_redis;
+
+	if (zend_parse_method_parameters(ZEND_NUM_ARGS() TSRMLS_CC, getThis(), "Os",
+				&object, redis_array_ce, &target, &target_len) == FAILURE) {
+		RETURN_FALSE;
+	}
+
+	if (redis_array_get(object, &ra TSRMLS_CC) < 0) {
+		RETURN_FALSE;
+	}
+
+	z_redis = ra_find_node_by_name(ra, target, target_len TSRMLS_CC);
+	if(z_redis) {
+		RETURN_ZVAL(z_redis, 1, 0);
+	} else {
+		RETURN_NULL();
+	}
+}
+
 PHP_METHOD(RedisArray, _function)
 {
 	zval *object;

redis_array.h

@@ -10,6 +10,7 @@ PHP_METHOD(RedisArray, __construct);
 PHP_METHOD(RedisArray, __call);
 PHP_METHOD(RedisArray, _hosts);
 PHP_METHOD(RedisArray, _target);
+PHP_METHOD(RedisArray, _specified);
 PHP_METHOD(RedisArray, _function);
 PHP_METHOD(RedisArray, _distributor);
 PHP_METHOD(RedisArray, _rehash);