[PATCH] pg_result_error_field

20 years ago by ilia@obnovlenie.ru — view source

unread

In many situations one needs to know what caused the error
And probably receive additional information about it
(e.g which foreign key constraint failed).

I attach tiny patches giving access to
PQresultErrorField function.

Error messages may need adjustment.

Tested on PHP 5.0.2

Example of usage: (from DB class)

pg_send_query($this->link, 'INSERT INTO b VALUES(5)');
$res = pg_get_result($this->link);
echo pg_result_error_field($res, PGSQL_DIAG_MESSAGE_DETAIL));

Patches (see attach):

--- ../../../../../../lang/php5/work/php-5.0.2/ext/pgsql/pgsql.c Wed
May 12 16:49:47 2004
+++ pgsql.c Sat Nov 13 19:51:05 2004
@@ -124,6 +124,7 @@
PHP_FE(pg_get_pid, NULL)
/* error message functions */
PHP_FE(pg_result_error, NULL)

PHP_FE(pg_result_error_field, NULL)
PHP_FE(pg_last_error, NULL)
PHP_FE(pg_last_notice, NULL)
/* copy functions */
@@ -438,6 +439,19 @@
REGISTER_LONG_CONSTANT("PGSQL_SEEK_SET", SEEK_SET, CONST_CS |
CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_SEEK_CUR", SEEK_CUR, CONST_CS |
CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_SEEK_END", SEEK_END, CONST_CS |
CONST_PERSISTENT);
/* For pg_result_error_field() */
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SEVERITY", PG_DIAG_SEVERITY,
CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SQLSTATE", PG_DIAG_SQLSTATE,
CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_MESSAGE_PRIMARY",
PG_DIAG_MESSAGE_PRIMARY, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_MESSAGE_DETAIL",
PG_DIAG_MESSAGE_DETAIL, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_MESSAGE_HINT",
PG_DIAG_MESSAGE_HINT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_STATEMENT_POSITION",
PG_DIAG_STATEMENT_POSITION, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_INTERNAL_POSITION",
PG_DIAG_INTERNAL_POSITION, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_INTERNAL_QUERY",
PG_DIAG_INTERNAL_QUERY, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_CONTEXT", PG_DIAG_CONTEXT,
CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_FILE",
PG_DIAG_SOURCE_FILE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_LINE",
PG_DIAG_SOURCE_LINE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_DIAG_SOURCE_FUNCTION",
PG_DIAG_SOURCE_FUNCTION, CONST_CS | CONST_PERSISTENT);
/* For pg_result_status() return value type /
REGISTER_LONG_CONSTANT("PGSQL_STATUS_LONG", PGSQL_STATUS_LONG,
CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("PGSQL_STATUS_STRING", PGSQL_STATUS_STRING,
CONST_CS | CONST_PERSISTENT);
@@ -2990,6 +3004,55 @@
}
/ }}} */
#endif

+/* {{{ proto string pg_result_error_field(resource result, long code)

Get diagnosis message associated with the result */
+PHP_FUNCTION(pg_result_error_field)
+{
zval *result;
long code;
PGresult *pgsql_result;
pgsql_result_handle *pg_result;
char *err = NULL;
if (zend_parse_parameters_ex(ZEND_PARSE_PARAMS_QUIET,
ZEND_NUM_ARGS() TSRMLS_CC, "rl",
```
  						 &result,
```

&code) == FAILURE) {

  php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot parse

params");

```
  RETURN_FALSE;
```
}
if (code != PG_DIAG_SEVERITY &&
```
  code != PG_DIAG_SQLSTATE &&
```
```
  code != PG_DIAG_MESSAGE_PRIMARY &&
```
```
  code != PG_DIAG_MESSAGE_DETAIL &&
```
```
  code != PG_DIAG_MESSAGE_HINT &&
```

  code != PG_DIAG_STATEMENT_POSITION &&

```
  code != PG_DIAG_INTERNAL_POSITION &&
```
```
  code != PG_DIAG_INTERNAL_QUERY &&
```
```
  code != PG_DIAG_CONTEXT &&
```
```
  code != PG_DIAG_SOURCE_FILE &&
```
```
  code != PG_DIAG_SOURCE_LINE &&
```
```
  code != PG_DIAG_SOURCE_FUNCTION
```
) {

  php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid diag

code");

```
  RETURN_FALSE;
```
}
ZEND_FETCH_RESOURCE(pg_result, pgsql_result_handle *, &result, -1,
"PostgreSQL result", le_result);
pgsql_result = pg_result->result;
if (!pgsql_result) {

  php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid result

suppied");

```
  RETURN_FALSE;
```
}
err = (char *)PQresultErrorField(pgsql_result, code);
RETURN_STRING(err,1);
+}
+/* }}} */

/* {{{ proto string pg_result_error(resource result)
Get error message associated with result */

--- ../../../../../../lang/php5/work/php-5.0.2/ext/pgsql/php_pgsql.h Thu
Jan 8 17:32:40 2004
+++ php_pgsql.h Sat Nov 13 19:50:06 2004
@@ -105,6 +105,7 @@
PHP_FUNCTION(pg_get_pid);
/* error message functions /
PHP_FUNCTION(pg_result_error);
+PHP_FUNCTION(pg_result_error_field);
PHP_FUNCTION(pg_last_error);
PHP_FUNCTION(pg_last_notice);
/ copy functions */