SQLite3Stmt::getSQL
(PHP 7 >= 7.4.0, PHP 8)
SQLite3Stmt::getSQL — Get the SQL of the statement
说明
public SQLite3Stmt::getSQL(bool
$expand = false): string|false
Retrieves the SQL of the prepared statement. If expand
is false, the unmodified SQL is retrieved. If expand
is true, all query parameters are replaced with their bound values, or with
an SQL NULL, if not already bound.
参数
-
expand -
Whether to retrieve the expanded SQL. Passing
trueis 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 expand 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
示例 #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"
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