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SQLite3Stmt::bindValue

(PHP 5 >= 5.3.0)

SQLite3Stmt::bindValueBinds the value of a parameter to a statement variable

Descrição

public bool SQLite3Stmt::bindValue ( string $sql_param , mixed $value [, int $type ] )

Binds the value of a parameter to a statement variable.

Parâmetros

sql_param

An string identifying the statement variable to which the value should be bound.

value

The value to bind to a statement variable.

type

The data type of the value to bind.

  • SQLITE3_INTEGER: The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.

  • SQLITE3_FLOAT: The value is a floating point value, stored as an 8-byte IEEE floating point number.

  • SQLITE3_TEXT: The value is a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16-LE).

  • SQLITE3_BLOB: The value is a blob of data, stored exactly as it was input.

  • SQLITE3_NULL: The value is a NULL value.

Valor Retornado

Returns TRUE if the value is bound to the statement variable, FALSE on failure.

Exemplos

Exemplo #1 SQLite3Stmt::bindValue() example

<?php
unlink
('mysqlitedb.db');
$db = new SQLite3('mysqlitedb.db');

$db->exec('CREATE TABLE foo (id INTEGER, bar STRING)');
$db->exec("INSERT INTO foo (id, bar) VALUES (1, 'This is a test')");

$stmt $db->prepare('SELECT bar FROM foo WHERE id=:id');
$stmt->bindValue(':id'1SQLITE3_INTEGER);

$result $stmt->execute();
var_dump($result->fetchArray());
?>

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User Contributed Notes 2 notes

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9
zeebinz at gmail dot com
4 years ago
Note that this also works with positional placeholders using the '?' token:

<?php

$stmt
= $db->prepare('SELECT * FROM mytable WHERE foo = ? AND bar = ?');
$stmt->bindValue(1, 'somestring', SQLITE3_TEXT);
$stmt->bindValue(2, 42, SQLITE3_INTEGER);

?>

Positional numbering starts at 1.
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0
bohwaz
5 months ago
It might be a good idea to feed bindValue the type of the variable manually, or you might encounter weird stuff as the passed value is often treated as SQLITE3_TEXT and results in buggy queries.

For example:
<?php
$st
= $db->prepare('SELECT * FROM test WHERE (a+1) = ?');
$st->bindValue(1, 2);
?>

Will never return any result as it is treated by SQLite as if the query was 'SELECT * FROM test WHERE (a+1) = "2"'. Instead you have to set the type manually:

<?php
$st
= $db->prepare('SELECT * FROM test WHERE (a+1) = ?');
$st->bindValue(1, 2, \SQLITE3_INTEGER);
?>

And it will work. This bug is reported in https://bugs.php.net/bug.php?id=68849

Here is a simple function to help you make bindValue work correctly:

<?php
function getArgType($arg)
{
    switch (
gettype($arg))
    {
        case
'double': return SQLITE3_FLOAT;
        case
'integer': return SQLITE3_INTEGER;
        case
'boolean': return SQLITE3_INTEGER;
        case
'NULL': return SQLITE3_NULL;
        case
'string': return SQLITE3_TEXT;
        default:
            throw new \
InvalidArgumentException('Argument is of invalid type '.gettype($arg));
    }
}
?>
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