PDOStatement->bindValue()
(no version information, might be only in CVS)
PDOStatement->bindValue() --
Binds a value to a parameter
说明
class
PDOStatement {
bool
bindValue ( mixed parameter, mixed value [, int data_type] )
}
Binds a value to a corresponding named or question mark placeholder
in the SQL statement that was use to prepare the statement.
参数
parameter
Parameter identifier. For a prepared statement using named
placeholders, this will be a parameter name of the form
:name. For a prepared statement using
question mark placeholders, this will be the 1-indexed position of
the parameter.
value
The value to bind to the parameter.
data_type
Explicit data type for the parameter using the PDO::PARAM_*
constants.
返回值
如果成功则返回 TRUE，失败则返回 FALSE。
范例
例 1. Execute a prepared statement with named placeholders
<?php
/* Execute a prepared statement by binding PHP variables */
$calories = 150;
$colour = 'red';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < :calories AND colour = :colour');
$sth->bindValue(':calories', $calories, PDO::PARAM_INT);
$sth->bindValue(':colour', $colour, PDO::PARAM_STR);
$sth->execute();
?>
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例 2. Execute a prepared statement with question mark placeholders
<?php
/* Execute a prepared statement by binding PHP variables */
$calories = 150;
$colour = 'red';
$sth = $dbh->prepare('SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?');
$sth->bindValue(1, $calories, PDO::PARAM_INT);
$sth->bindValue(2, $colour, PDO::PARAM_STR);
$sth->execute();
?>
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