{ zval *fooval; MAKE_STD_ZVAL(fooval); ZVAL_STRING(fooval, "hello", 1); ZEND_SET_SYMBOL( EG(active_symbol_table) , "foo" , fooval);}
struct _zend_executor_globals { ... ... HashTable *active_symbol_table; /*活动符号表*/ HashTable symbol_table; /* 全局符号表 */ HashTable included_files; /* files already included */ ...}
struct _zend_execute_data { struct _zend_op *opline; zend_function_state function_state; zend_op_array *op_array;//函数编译后的执行逻辑，编译后的opcode二进制代码，称为op_array zval *object; HashTable *symbol_table;//此函数的符号表地址 struct _zend_execute_data *prev_execute_data; zval *old_error_reporting; zend_bool nested; zval **original_return_value; zend_class_entry *current_scope; zend_class_entry *current_called_scope; zval *current_this; struct _zend_op *fast_ret; /* used by FAST_CALL/FAST_RET (finally keyword) */ call_slot *call_slots; call_slot *call;};struct _zend_execute_data { struct _zend_op *opline; zend_function_state function_state; zend_op_array *op_array;//函数编译后的执行逻辑，编译后的opcode二进制代码，称为op_array zval *object; HashTable *symbol_table;//此函数的符号表地址 struct _zend_execute_data *prev_execute_data; zval *old_error_reporting; zend_bool nested; zval **original_return_value; zend_class_entry *current_scope; zend_class_entry *current_called_scope; zval *current_this; struct _zend_op *fast_ret; /* used by FAST_CALL/FAST_RET (finally keyword) */ call_slot *call_slots; call_slot *call;};typedef struct bucket { ulong h; /* Used for numeric indexing */ uint nKeyLength; void *pData; void *pDataPtr; struct bucket *pListNext; struct bucket *pListLast; struct bucket *pNext; struct bucket *pLast; const char *arKey;} Bucket;typedef struct _hashtable { uint nTableSize; // hash Bucket的大小，最小为8，以2x增长。 uint nTableMask; // nTableSize-1 ， 索引取值的优化 uint nNumOfElements; // hash Bucket中当前存在的元素个数，count()函数会直接返回此值 ulong nNextFreeElement; // 下一个数字索引的位置 Bucket *pInternalPointer; // 当前遍历的指针（foreach比for快的原因之一） Bucket *pListHead; // 存储数组头元素指针 Bucket *pListTail; // 存储数组尾元素指针 Bucket **arBuckets; // 存储hash数组 dtor_func_t pDestructor; // 在删除元素时执行的回调函数，用于资源的释放 zend_bool persistent; //指出了Bucket内存分配的方式。如果persisient为TRUE，则使用操作系统本身的内存分配函数为Bucket分配内存，否则使用PHP的内存分配函数。 unsigned char nApplyCount; // 标记当前has<a style="color:transparent">来@源gao*daima.com搞@代#码网</a><strong>搞gaodaima代码</strong>h Bucket被递归访问的次数（防止多次递归） zend_bool bApplyProtection;// 标记当前hash桶允许不允许多次访问，不允许时，最多只能递归3次#if ZEND_DEBUG int inconsistent;#endif} HashTable;Zend/zend_compiles.h 261行,op_array结构代码
struct _zend_op_array { /* Common elements */ zend_uchar type; const char *function_name; zend_class_entry *scope; zend_uint fn_flags; union _zend_function *prototype; zend_uint num_args; zend_uint required_num_args; zend_arg_info *arg_info; /* END of common elements */ zend_uint *refcount; zend_op *opcodes; zend_uint last; zend_compiled_variable *vars; int last_var; zend_uint T; zend_uint nested_calls; zend_uint used_stack; zend_brk_cont_element *brk_cont_array; int last_brk_cont; zend_try_catch_element *try_catch_array; int last_try_catch; zend_bool has_finally_block; /* static variables support */ HashTable *static_variables; zend_uint this_var; const char *filename; zend_uint line_start; zend_uint line_end; const char *doc_comment; zend_uint doc_comment_len; zend_uint early_binding; /* the linked list of delayed declarations */ zend_literal *literals; int last_literal; void **run_time_cache; int last_cache_slot; void *reserved[ZEND_MAX_RESERVED_RESOURCES];};
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