//基于long key的操作函数
zval *v3;
MAKE_STD_ZVAL(v3);
ZVAL_STRING(v3, "value3", 1);
zend_hash_index_update(names, 0, &v3, sizeof(zval *), NULL);//按数字索引键更新HashTable元素的值
zval **v4;
zend_hash_index_find(names, 1, &v4); //按数字索引获取HashTable元素的值
php_printf("v4 : ");
PHPWRITE(Z_STRVAL_PP(v4), Z_STRLEN_PP(v4));
php_printf("\n");
ulong idx;
idx = zend_hash_index_exists(names, 10);//按数字索引查找HashTable，如果找到返回 1， 反之则返回 0
zend_hash_index_del(names, 2); //按数字索引删除HashTable元素
//hashTable的遍历函数
zend_hash_internal_pointer_reset(names); //初始化hash指针
zend_hash_internal_pointer_reset_ex(names, &pos);//初始化hash指针，并付值给pos
zend_hash_get_current_data(names, (void**) &val); //获取当前hash存储值,data should be cast to void**, ie: (void**) &data
zend_hash_get_current_data_ex(names, (void**) &val, &pos) == SUCCESS; //获取当前hash存储值
zend_hash_get_current_key(names, &key, &klen, &index, 0) == HASH_KEY_IS_LONG
zend_hash_get_current_key_ex(names, &key, &klen, &index, 0, &pos) == HASH_KEY_IS_LONG; //读取hashtable当前的KEY，返回值会有两种 HASH_KEY_IS_LONG | HASH_KEY_IS_STRING ，分别对应array("value")，array("key"=>"value")两种hashtable
zend_hash_move_forward(names);
zend_hash_move_forward_ex(names, &pos); //hash指针移至下一位
//HashTable长度
php_printf("%*carray(%d) {\n", depth * 2, ' ', zend_hash_num_elements(Z_ARRVAL_P(zv))
一个简单的函数
function hello_array_strings($arr) { if (!is_array($arr)) return NULL; printf("The array passed contains %d elements ", count($arr)); foreach($arr as $data) { if (is_string($data)) echo "$data "; } }
PHP内核实现
PHP_FUNCTION(hello_array_strings) { zval *arr, **data; HashTable *arr_hash; HashPosition pointer; int array_count; if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a", &arr) == FAILURE) { RETURN_NULL(); } arr_hash = Z_ARRVAL_P(arr); array_count = zend_hash_num_elements(arr_hash); php_printf("The array passed contains %d elements ", array_count); for(zend_hash_internal_pointer_reset_ex(arr_hash, &pointer); zend_hash_get_current_data_ex(arr_hash, (void**) &data, &pointer) == SUCCESS; zend_hash_move_forward_ex(arr_hash, &pointer)) { if (Z_TYPE_PP(data) == IS_STRING) { PHPWRITE(Z_STRVAL_PP(data), Z_STRLEN_PP(data)); php_printf(" "); } } RETURN_TRUE; }