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# PDO::query

(no version information, might be only in CVS)

PDO::query -- Executes an SQL statement, returning a result set as a PDOStatement object

## Description

object PDO::query ( string statement )

警告
這個函數是實驗性質的。這個函數的行為、名稱、和關於此函數的任何其他文件在未來PHP的發行中可能會在不通知的情況下改變。 使用此延伸需自行承擔風險。

PDO::query() prepares and executes an SQL statement in a single function call, returning the result set (if any) returned by the statement as a PDOStatement object.

For a SELECT statement that you need to issue multiple times, prepare a PDOStatement object with PDO::prepare() and issue the statement with PDOStatement::execute().

## Parameters

statement

  The SQL statement to prepare and execute.

## Return Values

PDO::query() returns a PDOStatement object.

## 範例

範例 1. Demonstrate PDO::query A nice feature of PDO::query() is that it enables you to iterate over the rowset returned by a successfully executed SELECT statement.
`<?php function getFruit($conn) { $sql = 'SELECT name, colour, calories FROM fruit ORDER BY name'; foreach ($conn->query($sql) as $row) { print $row['NAME'] . "\t"; print $row['COLOUR'] . "\t"; print $row['CALORIES'] . "\n"; } } ?>`
The above example will output:
    apple   red     150
    banana  yellow  250
    kiwi    brown   75
    lemon   yellow  25
    orange  orange  300
    pear    green   150
    watermelon      pink    90

## 參考

PDO::exec()
PDO::prepare()
PDOStatement::execute()

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