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PDOStatement->bindValue()

(PHP 5 >= 5.1.0, PECL pdo:1.0-1.0.3)

PDOStatement->bindValue() — Binds a value to a parameter

说明

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. Defaults to PHP native type.

返回值

如果成功则返回 TRUE,失败则返回 FALSE

范例

Example#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'
);
$sth->bindValue(':calories'$caloriesPDO::PARAM_INT);
$sth->bindValue(':colour'$colourPDO::PARAM_STR);
$sth->execute();
?>

Example#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 = ?'
);
$sth->bindValue(1$caloriesPDO::PARAM_INT);
$sth->bindValue(2$colourPDO::PARAM_STR);
$sth->execute();
?>

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