in_array和array_search源码分析

/* in_array和array_search进入的函数是一样的，调用php_search_array传的behavior来标识 */

/* {{{ Checks if the given value exists in the array */
PHP_FUNCTION(in_array)
{
    php_search_array(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */

/* {{{ Searches the array for a given value and returns the corresponding key if successful */
PHP_FUNCTION(array_search)
{
    php_search_array(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */

/* void php_search_array(INTERNAL_FUNCTION_PARAMETERS, int behavior)
 * 0 = return boolean
 * 1 = return key
 */
static inline void php_search_array(INTERNAL_FUNCTION_PARAMETERS, int behavior) /* {{{ */
{
　　/* 首先三个参数  */
    zval *value,                /* value to check for */
         *array,                /* array to check in */
         *entry;                /* pointer to array entry */
    zend_ulong num_idx;
    zend_string *str_idx;
    zend_bool strict = 0;        /* strict comparison or not */

　　/* 参数检验 */
    ZEND_PARSE_PARAMETERS_START(2, 3)
        Z_PARAM_ZVAL(value)
        Z_PARAM_ARRAY(array)
        Z_PARAM_OPTIONAL
        Z_PARAM_BOOL(strict)
    ZEND_PARSE_PARAMETERS_END();

    if (strict) {
        if (Z_TYPE_P(value) == IS_LONG) {
　　　　　　/* 遍历hastTable */
            ZEND_HASH_FOREACH_KEY_VAL_IND(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
                ZVAL_DEREF(entry);
                if (Z_TYPE_P(entry) == IS_LONG && Z_LVAL_P(entry) == Z_LVAL_P(value)) {
                    if (behavior == 0) {
                        RETURN_TRUE;
                    } else {
                        if (str_idx) {
                            RETVAL_STR_COPY(str_idx);
                        } else {
                            RETVAL_LONG(num_idx);
                        }
                        return;
                    }
                }
            } ZEND_HASH_FOREACH_END();
        } else {
            ZEND_HASH_FOREACH_KEY_VAL_IND(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
                ZVAL_DEREF(entry);
                if (fast_is_identical_function(value, entry)) {
                    if (behavior == 0) {
                        RETURN_TRUE;
                    } else {
                        if (str_idx) {
                            RETVAL_STR_COPY(str_idx);
                        } else {
                            RETVAL_LONG(num_idx);
                        }
                        return;
                    }
                }
            } ZEND_HASH_FOREACH_END();
        }
    } else {
        if (Z_TYPE_P(value) == IS_LONG) {
            ZEND_HASH_FOREACH_KEY_VAL_IND(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
                if (fast_equal_check_long(value, entry)) {
                    if (behavior == 0) {
                        RETURN_TRUE;
                    } else {
                        if (str_idx) {
                            RETVAL_STR_COPY(str_idx);
                        } else {
                            RETVAL_LONG(num_idx);
                        }
                        return;
                    }
                }
            } ZEND_HASH_FOREACH_END();
        } else if (Z_TYPE_P(value) == IS_STRING) {
            ZEND_HASH_FOREACH_KEY_VAL_IND(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
                if (fast_equal_check_string(value, entry)) {
                    if (behavior == 0) {
                        RETURN_TRUE;
                    } else {
                        if (str_idx) {
                            RETVAL_STR_COPY(str_idx);
                        } else {
                            RETVAL_LONG(num_idx);
                        }
                        return;
                    }
                }
            } ZEND_HASH_FOREACH_END();
        } else {
            ZEND_HASH_FOREACH_KEY_VAL_IND(Z_ARRVAL_P(array), num_idx, str_idx, entry) {
                if (fast_equal_check_function(value, entry)) {
                    if (behavior == 0) {
                        RETURN_TRUE;
                    } else {
                        if (str_idx) {
                            RETVAL_STR_COPY(str_idx);
                        } else {
                            RETVAL_LONG(num_idx);
                        }
                        return;
                    }
                }
            } ZEND_HASH_FOREACH_END();
         }
    }

    RETURN_FALSE;
}
/* }}} */