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Pdo\Pgsql::copyToFile

(PHP 8 >= 8.4.0)

Pdo\Pgsql::copyToFileCopy data from table into file

Опис

public function Pdo\Pgsql::copyToFile(
    string $tableName,
    string $filename,
    string $separator = "\t",
    string $nullAs = "\\\\N",
    ?string $fields = null
): bool

Copies data from table into file specified by filename using separator as fields delimiter and fields list.

Параметри

tableName
String containing table name.
filename
Filename to export data.
separator
Delimiter used to separate fields in an entry of the rows array.
nullAs
How to interpret SQL NULL values.
fields
List of fields to export.

Значення, що повертаються

Повертає true у разі успіху або false в разі помилки.

Помилки/виключення

If filename cannot be opened for writing, or cannot be written to, the failure is reported through the connection's error handling (see PDO::ATTR_ERRMODE); with PDO::ERRMODE_EXCEPTION a PDOException is thrown.

Приклади

Приклад #1 Pdo\Pgsql::copyToFile() example

The table is written to filename, one record per line, with fields joined by separator.

<?php
$db = new Pdo\Pgsql('pgsql:dbname=test host=localhost', $user, $pass);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->exec('CREATE TABLE fruits (id int, name text, qty int)');
$db->exec("INSERT INTO fruits VALUES (1, 'apple', 10), (2, 'banana', 20)");

$db->copyToFile('fruits', '/tmp/fruits.tsv');
echo file_get_contents('/tmp/fruits.tsv');
?>

Поданий вище приклад виведе:

1	apple	10
2	banana	20

Прогляньте також

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