pg_get_notify
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
pg_get_notify — Gets SQL NOTIFY message
Description
$connection
[, int $result_type
] ) : arraypg_get_notify() gets notifications generated by a NOTIFY SQL command. To receive notifications, the LISTEN SQL command must be issued.
Parameters
-
connection -
PostgreSQL database connection resource.
-
result_type -
An optional parameter that controls how the returned array is indexed.
result_typeis a constant and can take the following values:PGSQL_ASSOC,PGSQL_NUMandPGSQL_BOTH. UsingPGSQL_NUM, pg_get_notify() will return an array with numerical indices, usingPGSQL_ASSOCit will return only associative indices whilePGSQL_BOTH, the default, will return both numerical and associative indices.
Return Values
An array containing the NOTIFY message name and backend PID.
As of PHP 5.4.0 and if supported by the server, the array also contains the server version and the payload.
Otherwise if no NOTIFY is waiting, then FALSE is returned.
Examples
Example #1 PostgreSQL NOTIFY message
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occurred.\n";
exit;
}
// Listen 'author_updated' message from other processes
pg_query($conn, 'LISTEN author_updated;');
$notify = pg_get_notify($conn);
if (!$notify) {
echo "No messages\n";
} else {
print_r($notify);
}
?>
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
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References
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