pg_send_query_params() works identically to
pg_send_query(), except that instead of putting
query parameters directly into the querystring, placeholders are used and the parameters are
passed in separately. Unlike pg_send_query(),
only one non-empty SQL statement can be executed at a time.
Parameters passed in this way are automatically quoted and escaped
if necessary. This is an effective way of improving the security
of your scripts and eliminating the need for manual quoting and
escaping of parameters.
Placeholders are indicated in the query
by $1, $2, $3 and so on. The first parameter will be substituted for
$1, the second for $2, the third for $3.
Examples
Example 1. Using pg_send_query_params()
<?php $dbconn = pg_connect("dbname=publisher") or die("Could not connect");
// Using parameters. Note that it is not necessary to quote or escape // the parameter. pg_send_query_params($dbconn, 'select count(*) from authors where city = $1', array('Perth'));
// Compare against basic pg_send_query usage $str = pg_escape_string('Perth'); pg_send_query($dbconn, "select count(*) from authors where city = '${str}'"); ?>
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Php pg send query params syntax tutorial
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