SQLite3::querySingle()
(PHP 5 >= 5.3.0, PHP 7)
Executes a query and returns a single result
说明
public SQLite3::querySingle(string $query[,bool $entire_row=FALSE
]): mixed
Executes a query and returns a single result.
参数
- $query
The SQL query to execute.
- $entire_row
By default,querySingle() returns the value of the first column returned by the query. If$entire_rowis
TRUE
, then it returns an array of the entire first row.
返回值
Returns the value of the first column of results or an array of the entire first row(if$entire_rowis TRUE
).
If the query is valid but no results are returned, then NULL
will be returned if$entire_rowis FALSE
, otherwise an empty array is returned.
Invalid or failing queries will return FALSE
.
范例
SQLite3::querySingle() example
<?php $db = new SQLite3('mysqlitedb.db'); var_dump($db->querySingle('SELECT username FROM user WHERE userid=1')); print_r($db->querySingle('SELECT username, email FROM user WHERE userid=1', true)); ?>
以上例程的输出类似于:
string(5) "Scott" Array ( [username] => Scott [email] => scott@example.com )