SQLite3Stmt::getSQL
(PHP 7 >= 7.4.0)
SQLite3Stmt::getSQL — Get the SQL of the statement
说明
public
SQLite3Stmt::getSQL ([
bool
$expanded
= FALSE
] ) :
string
Retrieves the SQL of the prepared statement. If expanded
is FALSE
, the unmodified SQL is retrieved. If expanded
is TRUE
, all query parameters are replaced with their bound values, or with an SQL NULL, if not already bound.
参数
-
expanded
-
Whether to retrieve the expanded SQL. Passing
TRUE
is only supported as of libsqlite 3.14.
返回值
Returns the SQL of the prepared statement, 或者在失败时返回 FALSE
.
错误/异常
If expanded
is TRUE
, but the libsqlite version is less than 3.14, an error of level E_WARNING
or an Exception is issued, according to SQLite3::enableExceptions().
范例
Example #1 Inspecting the expanded SQL
<?php
$db = new SQLite3(':memory:');
$stmt = $db->prepare("SELECT :a, ?, :c");
$stmt->bindValue(':a', 'foo');
$answer = 42;
$stmt->bindParam(2, $answer);
var_dump($stmt->getSQL(true));
?>
以上例程的输出类似于:
string(24) "SELECT 'foo', '42', NULL"