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Последние активные темы форума |
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PDO::prepare
(no version information, might be only in CVS) PDO::prepare --
Prepares a statement for execution and returns a statement object
ОписаниеPDOStatement PDO::prepare ( string statement [, array driver_options] ) Внимание |
Эта функция является ЭКСПЕРИМЕНТАЛЬНОЙ.
Поведение этой функции, ее имя и относящаяся к ней документация
могут измениться в последующих версиях PHP без уведомления.
Используйте эту функцию на свой страх и риск. |
Prepares an SQL statement to be executed by the
PDOStatement::execute() method. The SQL statement can
contain zero or more named (:name) or question mark (?) parameter markers
for which real values will be substituted when the statement is executed.
Calling PDO::prepare() and PDOStatement::execute()
for statements that will be issued multiple times with different parameter
values optimizes the performance of your application and helps prevent SQL
injection attacks.
Список параметров- statement
This must be a valid SQL statement for the target database server.
- driver_options
This array holds one or more key=>value pairs to set
attribute values for the PDOStatement object that this method
returns. You would most commonly use this to set the
PDO_ATTR_CURSOR value to
PDO_CURSOR_SCROLL to request a scrollable cursor.
Возвращаемые значенияIf the database server successfully prepares the statement,
PDO::prepare() returns a PDOStatement object.
Примеры
Пример 1. Prepare an SQL statement with named parameters
<?php
/* Execute a prepared statement by passing an array of values */
$sql
=
'SELECT name, colour, calories
FROM fruit
WHERE calories < :calories AND colour = :colour'
$sth
=
$dbh
->
prepare
(
$sql
, array(
PDO_ATTR_CURSOR
,
PDO_CURSOR_FWDONLY
));
$sth
->
execute
(array(
':calories'
=>
150
,
':colour'
=>
'red'
));
$red
=
$sth
->
fetchAll
();
$sth
->
execute
(array(
':calories'
=>
175
,
':colour'
=>
'yellow'
));
$yellow
=
$sth
->
fetchAll
();
?>
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Пример 2. Prepare an SQL statement with question mark parameters
<?php
/* Execute a prepared statement by passing an array of values */
$sth
=
$dbh
->
prepare
(
'SELECT name, colour, calories
FROM fruit
WHERE calories < ? AND colour = ?'
);
$sth
->
execute
(array(
150
,
'red'
));
$red
=
$sth
->
fetchAll
();
$sth
->
execute
(array(
175
,
'yellow'
));
$yellow
=
$sth
->
fetchAll
();
?>
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Смотрите такжеPDO::exec() | PDO::query() | PDOStatement::execute() |
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