pg_prepare() returns a query result resource if
query could be prepared. It returns FALSE on failure or if
connection is not a valid connection. Details about the error can
be retrieved using the pg_last_error()
function if connection is valid.
pg_prepare() prepares an SQL statement for
the PostgreSQL database connection specified by the
connection resource. The
connection must be a valid connection that
was returned by pg_connect() or
pg_pconnect(). The return value of this
function is an query result resource. The stmtname
is the name of the prepared query, for future use with
pg_execute() or pg_send_execute().
Note: connection is an optional parameter for
pg_prepare(). If
connection is not set, default
connection is used. Default connection is the last connection
made by pg_connect() or
pg_pconnect().
Although connection can be omitted, it
is not recommended, since it could be a cause of hard to find
bug in script.
Parameters to pg_prepare() are specified
using placeholders in the query. It is not necessary to quote
parameters as quoting and escaping is done automatically.
Placeholders are indicated in the query
by $1, $2, $3 and so on.
Using prepared queries means you can prepare one and
then execute many times, with different parameters. PostgreSQL
will cache the query plan on the prepare, then re-use it for
each execute, resulting in speed improvements. There is no
need to use a prepared query if it will only be executed once.
In this case, it is simpler to use pg_query_params().
Examples
Example 1. Using pg_prepare()
<?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"));
pg prepare php code on this is provided for your study purpose, it will guide you to know how create and design a website using php. use it to practice and train your self online
Php pg prepare syntax tutorial
php tutorial guide and code design are for easy learning and programming. The code practice section provided at the top is for practising of this syntax. Use the code section up to practice your php programming online. Learning php is very easy, all you need is to use the examples on this site and practice them to perfect your skills.
