| title | PDOStatement::bindValue | Microsoft Docs |
|---|---|
| ms.custom | |
| ms.date | 05/22/2018 |
| ms.prod | sql |
| ms.prod_service | connectivity |
| ms.reviewer | |
| ms.technology | connectivity |
| ms.topic | conceptual |
| ms.assetid | 13bc4ece-420e-4887-8809-bf0705ddf126 |
| author | David-Engel |
| ms.author | v-daenge |
[!INCLUDEDriver_PHP_Download]
Binds a value to a named or question mark placeholder in the SQL statement.
bool PDOStatement::bindValue($parameter, $value[, $data_type]);
$parameter: A (mixed) parameter identifier. For a statement using named placeholders, use a parameter name (:name). For a prepared statement using the question mark syntax, it is the 1-based index of the parameter.
$value: The (mixed) value to bind to the parameter.
$data_type: The optional (integer) data type represented by a PDO::PARAM_* constant. The default is PDO::PARAM_STR.
TRUE on success, otherwise FALSE.
Support for PDO was added in version 2.0 of the [!INCLUDEssDriverPHP].
This example shows that after the value of $contact is bound, changing the value does not change the value passed in the query.
<?php
$database = "AdventureWorks";
$server = "(local)";
$conn = new PDO("sqlsrv:server=$server ; Database = $database", "", "");
$contact = "Sales Agent";
$stmt = $conn->prepare("select * from Person.ContactType where name = ?");
$stmt->bindValue(1, $contact);
$contact = "Owner";
$stmt->execute();
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
print "$row[Name]\n\n";
}
$stmt = null;
$contact = "Sales Agent";
$stmt = $conn->prepare("select * from Person.ContactType where name = :contact");
$stmt->bindValue(':contact', $contact);
$contact = "Owner";
$stmt->execute();
while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
print "$row[Name]\n\n";
}
?>
Note
It is recommended to use strings as inputs when binding values to a decimal or numeric column to ensure precision and accuracy as PHP has limited precision for floating point numbers. The same applies to bigint columns, especially when the values are outside the range of an integer.
This code sample shows how to bind a decimal value as an input parameter.
<?php
$database = "Test";
$server = "(local)";
$conn = new PDO("sqlsrv:server=$server ; Database = $database", "", "");
// Assume TestTable exists with a decimal field
$input = 9223372036854.80000;
$stmt = $conn->prepare("INSERT INTO TestTable (DecimalCol) VALUES (?)");
// by default it is PDO::PARAM_STR, rounding of a large input value may
// occur if PDO::PARAM_INT is specified
$stmt->bindValue(1, $input, PDO::PARAM_STR);
$stmt->execute();