能解釋爲什麼輸出結果是這樣嗎?我想知道爲什麼包含數組。我在程序中看不到任何數組字。這怎麼發生的?我怎麼可能只輸出「1」。Mysqli代碼輸出說明
CODE:
if (!$mysqli->query("DROP TABLE IF EXISTS test") ||
!$mysqli->query("CREATE TABLE test(id INT)") ||
!$mysqli->query("INSERT INTO test(id) VALUES (1)")) {
echo "Table creation failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
if (!$mysqli->query("DROP PROCEDURE IF EXISTS p") ||
!$mysqli->query('CREATE PROCEDURE p() READS SQL DATA BEGIN SELECT id FROM test; SELECT id + 1 FROM test; END;')) {
echo "Stored procedure creation failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
if (!$mysqli->multi_query("CALL p()")) {
echo "CALL failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
do {
if ($res = $mysqli->store_result()) {
printf("---\n");
var_dump($res->fetch_all());
$res->free();
} else {
if ($mysqli->errno) {
echo "Store failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
}
} while ($mysqli->more_results() && $mysqli->next_result());
?>
結果:
---
array(3) {
[0]=>
array(1) {
[0]=>
string(1) "1"
}
}
我反正刪除的其它輸出我只是想知道爲什麼包含數組。