PHP PDOStatement::debugDumpParams讲解
2020-11-27
来源：乌哈旅游
PDOStatement::debugDumpParams()使用未命名参数的例子
<?php
/* 通过绑定 PHP 变量执行一条预处理语句 */
$calories = 150;
$colour = 'red';
$name = 'apple';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?');
$sth->bindParam(1, $calories, PDO::PARAM_INT);
$sth->bindValue(2, $colour, PDO::PARAM_STR);
$sth->execute();
$sth->debugDumpParams();
?>
以上例程会输出：
SQL: [82] SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?
Params: 2
Key: Position #0:
paramno=0
name=[0] ""
is_param=1
param_type=1
Key: Position #1:
paramno=1
name=[0] ""
is_param=1
param_type=2
总结
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