# pg_update

(PHP 4 >= 4.3.0, PHP 5)

pg_update — Update table

### Description

mixed pg_update ( resource `$connection` , string `$table_name` , array `$data` , array `$condition` [, int `$options` ] )

pg_update() updates records that matches condition with data. If options is specified, pg_convert() is applied to data with specified options.

Warning

This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

### Parameters

`connection`

  PostgreSQL database connection resource.

`table_name`

  Name of the table into which to update rows.

`data`

  An array whose keys are field names in the table `table_name` , and whose values are what matched rows are to be updated to.

`condition`

  An array whose keys are field names in the table `table_name` , and whose values are the conditions that a row must meet to be updated.

`options`

  Any number of `PGSQL_CONV_OPTS`, `PGSQL_DML_NO_CONV`, `PGSQL_DML_EXEC` or `PGSQL_DML_STRING` combined. If `PGSQL_DML_STRING` is part of the `options` then query string is returned.

### Return Values

Returns `TRUE` on success or `FALSE` on failure. Returns string if `PGSQL_DML_STRING` is passed via `options` .

### Examples

Example#1 pg_update() example

`<?php
$db = pg_connect('dbname=foo');
$data = array('field1'=>'AA', 'field2'=>'BB');
// This is safe, since $_POST is converted automatically
$res = pg_update($db, 'post_log', $_POST, $data);
if ($res) {
echo "Data is updated: $res\n";
} else {
echo "User must have sent wrong inputs\n";
}
?>`

### See Also

- pg_convert()