pg_execute

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

pg_execute — Sends a request to execute a prepared statement with given parameters, and waits for the result

Descrizione

pg_execute(PgSql\Connection $connection = ?, string $stmtname, array $params): PgSql\Result|false

Sends a request to execute a prepared statement with given parameters, and waits for the result.

pg_execute() is like pg_query_params(), but the command to be executed is specified by naming a previously-prepared statement, instead of giving a query string. This feature allows commands that will be used repeatedly to be parsed and planned just once, rather than each time they are executed. The statement must have been prepared previously in the current session. pg_execute() is supported only against PostgreSQL 7.4 or higher connections; it will fail when using earlier versions.

The parameters are identical to pg_query_params(), except that the name of a prepared statement is given instead of a query string.

Elenco dei parametri

connection

An PgSql\Connection instance. When connection is unspecified, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().

Avviso

As of PHP 8.1.0, using the default connection is deprecated.

stmtname

The name of the prepared statement to execute. if "" is specified, then the unnamed statement is executed. The name must have been previously prepared using pg_prepare(), pg_send_prepare() or a PREPARE SQL command.

params

An array of parameter values to substitute for the $1, $2, etc. placeholders in the original prepared query string. The number of elements in the array must match the number of placeholders.

Avviso

Elements are converted to strings by calling this function.

Valori restituiti

An PgSql\Result instance on success, o false in caso di fallimento.

Log delle modifiche

Versione	Descrizione
8.1.0	Returns an PgSql\Result instance now; previously, a resource was returned.
8.1.0	The `connection` parameter expects an PgSql\Connection instance now; previously, a resource was expected.

Esempi

Example #1 Using pg_execute()

<?php
// Connect to a database named "mary"
$dbconn = pg_connect("dbname=mary");

// Prepare a query for execution
$result = pg_prepare($dbconn, "my_query", 'SELECT * FROM shops WHERE name = $1');

// Execute the prepared query.  Note that it is not necessary to escape
// the string "Joe's Widgets" in any way
$result = pg_execute($dbconn, "my_query", array("Joe's Widgets"));

// Execute the same prepared query, this time with a different parameter
$result = pg_execute($dbconn, "my_query", array("Clothes Clothes Clothes"));

?>

Vedere anche:

pg_prepare() - Submits a request to create a prepared statement with the given parameters, and waits for completion
pg_send_prepare() - Sends a request to create a prepared statement with the given parameters, without waiting for completion
pg_query_params() - Submits a command to the server and waits for the result, with the ability to pass parameters separately from the SQL command text

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User Contributed Notes 1 note

down

-11

nmmm at nmmm dot nu ¶

18 years ago


I am not 100% sure in this, but pg_exec() could return 0 as Connection ID.

because of that i change some of my code like this:

$dbres = pg_exec($SQL);

if ($dbres === false){
        echo "DB is down";
        exit;
}else{
        //do something
}

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